Yalla Group Limited (YALA) 20-F2 Apr 212020 FY Annual report (foreign)Financial data

Company Profile

Cover Page

Cover Page	12 Months Ended
Cover Page	Dec. 31, 2020shares
Document Information [Line Items]
Document Type	20-F
Amendment Flag	false
Document Period End Date	Dec. 31, 2020
Document Fiscal Year Focus	2020
Document Fiscal Period Focus	FY
Entity Registrant Name	Yalla Group Ltd
Entity Central Index Key	0001794350
Current Fiscal Year End Date	--12-31
Entity Well-known Seasoned Issuer	No
Entity Current Reporting Status	Yes
Entity Filer Category	Non-accelerated Filer
Entity Emerging Growth Company	true
Entity Ex Transition Period	false
Entity Shell Company	false
Entity Voluntary Filers	No
Entity Interactive Data Current	Yes
Entity Incorporation, State or Country Code	E9
Entity Address, Address Line One	#238, Building 16, Dubai Internet City
Entity Address, City or Town	Dubai
Document Annual Report	true
Document Transition Report	false
Document Shell Company Report	false
Document Registration Statement	false
Document Accounting Standard	U.S. GAAP
Entity File Number	001-39552
Entity Address, Country	AE
ICFR Auditor Attestation Flag	false
Business Contact [Member]
Document Information [Line Items]
Contact Personnel Name	Yang Hu
American Depositary Shares [Member]
Document Information [Line Items]
Title of 12(b) Security	American depositary shares, each representing one Class A ordinary share
Trading Symbol	YALA
Security Exchange Name	NYSE
Class A Common Shares [Member]
Document Information [Line Items]
Title of 12(b) Security	Class A ordinary shares, par value US$0.0001
Security Exchange Name	NYSE
Entity Common Stock, Shares Outstanding	119,196,117
No Trading Symbol Flag	true
Class B Common Shares [Member]
Document Information [Line Items]
Entity Common Stock, Shares Outstanding	24,734,013

CONSOLIDATED BALANCE SHEETS

CONSOLIDATED BALANCE SHEETS - USD ($)	Dec. 31, 2020	Dec. 31, 2019
Current assets
Cash and cash equivalents	$ 236,883,282	$ 45,302,622
Term deposits		2,722,941
Short-term investments	766,295	1,506,985
Prepayments and other current assets	15,725,424	3,930,306
Total current assets	253,375,001	53,462,854
Non-current assets
Property and equipment, net	1,241,756	453,923
Other assets		200,000
Total assets	254,616,757	54,116,777
Current liabilities
Accounts payable	1,573,784	724,487
Deferred revenue	13,359,827	6,010,874
Accrued expenses and other current liabilities	6,148,486	1,576,530
Total current liabilities	21,082,097	8,311,891
Total liabilities	21,082,097	8,311,891
MEZZANINE EQUITY
Total mezzanine equity		25,902,710
SHAREHOLDERS' EQUITY:
Ordinary Shares		7,339
Subscriptions receivable		(7,339)
Additional paid-in capital	220,623,005
Accumulated other comprehensive income	373,989	5,218
Retained earnings	12,523,273	19,896,958
Total shareholders' equity	233,534,660	19,902,176
Total liabilities, mezzanine equity and shareholders' equity	254,616,757	54,116,777
Series Angel Redeemable Convertible Preferred Shares [Member]
MEZZANINE EQUITY
Total mezzanine equity		263,608
Series Pre A Redeemable Convertible Preferred Shares [Member]
MEZZANINE EQUITY
Total mezzanine equity		3,570,201
Series A Redeemable Convertible Preferred Shares [Member]
MEZZANINE EQUITY
Total mezzanine equity		22,068,901
Class A Ordinary shares [Member]
SHAREHOLDERS' EQUITY:
Ordinary Shares	11,920
Class B Ordinary shares [Member]
SHAREHOLDERS' EQUITY:
Ordinary Shares	$ 2,473

CONSOLIDATED BALANCE SHEETS (Pa

CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($)	Dec. 31, 2020	Dec. 31, 2019
Ordinary shares, par or stated value per share		$ 0.0001
Ordinary shares, shares authorized		448,763,811
Ordinary shares, shares issued		73,393,941
Ordinary shares, shares outstanding		73,393,941
Series Angel Redeemable Convertible Preferred Shares [Member]
Convertible preferred shares, par value per share	$ 0.0001	$ 0.0001
Convertible preferred shares, authorized	0	4,955,327
Convertible preferred shares, issued	0	4,955,327
Convertible preferred shares, outstanding	0	4,955,327
Convertible preferred shares, redemption value		$ 263,608
Convertible preferred shares, liquidation value		$ 261,702
Series Pre A Redeemable Convertible Preferred Shares [Member]
Convertible preferred shares, par value per share	$ 0.0001	$ 0.0001
Convertible preferred shares, authorized	0	9,917,226
Convertible preferred shares, issued	0	9,917,226
Convertible preferred shares, outstanding	0	9,917,226
Convertible preferred shares, redemption value		$ 850,292
Convertible preferred shares, liquidation value		$ 746,284
Series A Redeemable Convertible Preferred Shares [Member]
Convertible preferred shares, par value per share	$ 0.0001	$ 0.0001
Convertible preferred shares, authorized	0	36,363,636
Convertible preferred shares, issued	0	36,363,636
Convertible preferred shares, outstanding	0	36,363,636
Convertible preferred shares, redemption value		$ 22,068,901
Convertible preferred shares, liquidation value		$ 20,000,000
Class A Ordinary shares [Member]
Ordinary shares, par or stated value per share	$ 0.0001
Ordinary shares, shares authorized	400,000,000
Ordinary shares, shares issued	119,196,117
Ordinary shares, shares outstanding	119,196,117
Class B Ordinary shares [Member]
Ordinary shares, par or stated value per share	$ 0.0001
Ordinary shares, shares authorized	100,000,000
Ordinary shares, shares issued	24,734,013
Ordinary shares, shares outstanding	24,734,013

CONSOLIDATED STATEMENTS OF COMP

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($)	12 Months Ended
CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($)	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Revenues	$ 134,927,410	$ 63,464,574	$ 42,371,174
Costs and expenses:
Cost of revenues	(61,270,887)	(20,553,319)	(13,847,509)
Selling and marketing expenses	(21,701,852)	(8,250,130)	(5,686,290)
General and administrative expenses	(42,974,825)	(4,120,693)	(1,629,539)
Technology and product development expenses	(5,221,124)	(1,597,658)	(853,127)
Total costs and expenses	(131,168,688)	(34,521,800)	(22,016,465)
Operating income	3,758,722	28,942,774	20,354,709
Interest income	202,474	390,227	144,565
Government grant	99,277
Investment income	13,994	27,568	5,712
Income before income taxes	4,074,467	29,360,569	20,504,986
Income tax expense	(861,081)	(435,766)	(263,363)
Net income	3,213,386	28,924,803	20,241,623
Deemed dividend
Accretion of redeemable convertible preferred shares (note 7)	(1,577,026)	(1,940,252)	(1,127,052)
Distribution to the shareholders of FYXTech BVI and Shenzhen Yale in connection with the Reorganization (note 1)			(18,146,091)
Dividends distributed to redeemable convertible preferred shareholders	(3,704,083)
Net income (loss) attributable to ordinary shareholders	$ (2,067,723)	$ 26,984,551	$ (9,083,084)
Earnings (loss) per ordinary share
—Basic and diluted	$ (0.02)	$ 0.22	$ (0.12)
Weighted average number of shares outstanding used in computing earnings (loss) per ordinary share
—Basic and diluted	91,755,810	73,393,941	73,393,941
Net income	$ 3,213,386	$ 28,924,803	$ 20,241,623
Other comprehensive income (loss)
Foreign currency translation adjustments, net of nil income taxes	368,771	25,412	(49,830)
Unrealized holding gains on short-term investments, net of income taxes of US$1,428, US$6,892 and US$3,498 for the years ended December 31, 2018, 2019 and 2020, respectively	10,496	30,527	8,007
Less: reclassification adjustment for gains on short-term investments realized in net income, net of income taxes of US$1,428, US$6,892 and US$3,498 for the years ended December 31, 2018, 2019 and 2020, respectively	(10,496)	(20,676)	(4,284)
Other comprehensive income (loss), net of income taxes	368,771	35,263	(46,107)
Comprehensive income	3,582,157	$ 28,960,066	20,195,516
Class A Redeemable Convertible Preferred Equity Holders [Member]
Deemed dividend
Deemed dividend			(2,700,000)
Class C Redeemable Convertible Preferred Equity Holders [Member]
Deemed dividend
Deemed dividend			(3,781,363)
Series Pre-A Redeemable Convertible Preferred Shareholders [Member]
Deemed dividend
Deemed dividend			$ (3,570,201)

CONSOLIDATED STATEMENTS OF CO_2

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Parenthetical) - USD ($)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Statement of Comprehensive Income [Abstract]
Tax on foreign currency translation adjustments
Tax on unrealized holding gains on short-term investment	3,498	6,892	1,428
Tax on reclassification adjustment for gains on short-term investments realized	$ 3,498	$ 6,892	$ 1,428

CONSOLIDATED STATEMENTS OF SHAR

CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY DEFICIT - USD ($)	Total	Class A Ordinary Shares [Member]	Class A Ordinary Shares [Member]Series Angel Redeemable Convertible Preferred Shares [Member]	Class A Ordinary Shares [Member]Series Pre-A Redeemable Convertible Preferred Shares [Member]	Class A Ordinary Shares [Member]Series A Redeemable Convertible Preferred Shares [Member]	Class B Ordinary Shares [Member]	Class A Redeemable Convertible Preferred Stock [Member]	Class C Redeemable Convertible Preferred Stock [Member]	Series Angel Redeemable Convertible Preferred Shares [Member]	Series Pre-A Redeemable Convertible Preferred Shares [Member]	Series A Redeemable Convertible Preferred Shares [Member]	Ordinary Shares [Member]	Subscriptions receivable [Member]	Additional paid-in capital [Member]	Additional paid-in capital [Member]Series Angel Redeemable Convertible Preferred Shares [Member]	Additional paid-in capital [Member]Series Pre-A Redeemable Convertible Preferred Shares [Member]	Additional paid-in capital [Member]Series A Redeemable Convertible Preferred Shares [Member]	Accumulated other comprehensive income (loss) [Member]	Retained earnings [Member]	Retained earnings [Member]Class A Redeemable Convertible Preferred Stock [Member]	Retained earnings [Member]Class C Redeemable Convertible Preferred Stock [Member]	Retained earnings [Member]Series Pre-A Redeemable Convertible Preferred Shares [Member]
Balance at Dec. 31, 2017	$ 2,044,391																	$ 48,900	$ 1,995,491
Deemed dividend							$ (2,700,000)	$ (3,781,363)		$ (3,570,201)										$ (2,700,000)	$ (3,781,363)	$ (3,570,201)
Issuance of Ordinary Shares												$ 7,339	$ (7,339)
Issuance of Ordinary Shares, Shares												73,393,941
Accretion of redeemable convertible preferred shares	(1,127,052)																		(1,127,052)
Net Income	20,241,623																		20,241,623
Foreign currency translation adjustments, net of nil income taxes	(49,830)																	(49,830)
Unrealized holding gains on short-term investments, net of income taxes	8,007																	8,007
Reclassification adjustment for gains on short-term investments realized in net income, net of income taxes	(4,284)																	(4,284)
Distribution to the shareholders of FYXTech BVI and Shenzhen Yale in connection with the Reorganization (note 1)	(18,178,929)																	(32,838)	(18,146,091)
Balance at Dec. 31, 2018	(7,117,638)											$ 7,339	(7,339)					(30,045)	(7,087,593)
Balance, Shares at Dec. 31, 2018												73,393,941
Accretion of redeemable convertible preferred shares	(1,940,252)																		(1,940,252)
Net Income	28,924,803																		28,924,803
Foreign currency translation adjustments, net of nil income taxes	25,412																	25,412
Unrealized holding gains on short-term investments, net of income taxes	30,527																	30,527
Reclassification adjustment for gains on short-term investments realized in net income, net of income taxes	(20,676)																	(20,676)
Balance at Dec. 31, 2019	19,902,176											$ 7,339	(7,339)					5,218	19,896,958
Balance, Shares at Dec. 31, 2019												73,393,941
Issuance of Ordinary Shares	132,344,840	$ 1,930												$ 132,342,910
Issuance of Ordinary Shares, Shares		19,300,000
Accretion of redeemable convertible preferred shares	(1,577,026)																		(1,577,026)
Net Income	3,213,386																		3,213,386
Foreign currency translation adjustments, net of nil income taxes	368,771																	368,771
Unrealized holding gains on short-term investments, net of income taxes	10,496																	10,496
Reclassification adjustment for gains on short-term investments realized in net income, net of income taxes	(10,496)																	(10,496)
Dividend to shareholders	(9,010,045)																		(9,010,045)
Re-designation of Ordinary Shares into Class A and Class B Ordinary Shares immediately prior to the completion of the initial public offering		$ 4,866				$ 2,473						$ (7,339)
Re-designation of Ordinary Shares into Class A and Class B Ordinary Shares immediately prior to the completion of the initial public offering, Shares		48,659,928				24,734,013						(73,393,941)
Conversion of Preferred Shares into Ordinary Shares			$ 496	$ 992	$ 3,636				$ 287,907	$ 3,570,201	$ 23,621,628				$ 287,411	$ 3,569,209	$ 23,617,992
Conversion of Preferred Shares into Ordinary Shares, Shares			4,955,327	9,917,226	36,363,636
Contribution from ordinary shareholders	7,339												$ 7,339
Share-based compensation	60,805,483													60,805,483
Balance at Dec. 31, 2020	$ 233,534,660	$ 11,920				$ 2,473								$ 220,623,005				$ 373,989	$ 12,523,273
Balance, Shares at Dec. 31, 2020		119,196,117				24,734,013

CONSOLIDATED STATEMENTS OF SH_2

CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY DEFICIT (Parenthetical)	12 Months Ended
	Dec. 31, 2020USD ($)
Tax on foreign currency translation adjustments
Tax on unrealized holding gains on short-term investment	3,498
Tax on reclassification adjustment for gains on short-term investments realized	3,498
Payments of Stock Issuance Costs	2,346,059
IPO [Member]
Payments of Stock Issuance Costs	$ 12,405,096

CONSOLIDATED STATEMENTS OF CASH

CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)	12 Months Ended
CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Operating activities:
Net Income	$ 3,213,386	$ 28,924,803	$ 20,241,623
Adjustments to reconcile net income to net cash provided by operating activities
Depreciation	262,184	173,610	25,586
Investment income	(13,994)	(27,568)	(5,712)
Share-based compensation expenses	60,805,483
Changes in operating assets and liabilities:
Prepayments and other current assets	(11,742,160)	(1,635,147)	(255,706)
Accounts payable	849,297	291,842	315,279
Deferred revenue	7,348,953	2,571,456	2,528,228
Accrued expenses and other current liabilities	4,069,530	981,988	529,066
Net cash provided by operating activities	64,792,679	31,280,984	23,378,364
Investing activities:
Purchase of property and equipment	(1,029,654)	(427,933)	(203,872)
Purchases of short-term investments	(3,661,847)	(5,943,321)	(2,013,257)
Proceeds from maturity of short-term investments	4,451,035	4,956,176	1,671,775
Purchase of term deposits		(7,722,941)	(2,871,218)
Proceeds from maturity of term deposits	2,722,941	6,304,631	1,511,167
Net cash used in investing activities	2,482,475	(2,833,388)	(1,905,405)
Financing activities:
Proceeds from issuance of Series A Redeemable Convertible Preferred Shares			20,000,000
Payment of issuance cost of Series A Redeemable Convertible Preferred Shares			(922,589)
Repurchase of preferred shares (note 1 and note 7)			(7,584,184)
Proceeds from Initial Public Offering, net of underwriting commissions and discounts of US$9,632,500	135,117,436
Cash contribution from ordinary shareholders	7,339
Loans to shareholders of FYXTech BVI (note 13)			(10,260,950)
Cash distributed to the shareholders of FYXTech BVI and Shenzhen Yale in connection with the Reorganization (note 1)			(7,601,027)
Payments of initial public offering costs	(2,346,059)	(200,000)
Payments of dividends	(9,010,045)
Net cash used in financing activities	123,768,671	(200,000)	(6,368,750)
Effect of foreign currency exchange rate changes on cash and cash equivalents	536,835	38,326	8,146
Net increase in cash and cash equivalents	191,580,660	28,285,922	15,112,355
Cash and cash equivalents at the beginning of the year	45,302,622	17,016,700	1,904,345
Cash and cash equivalents at the end of the year	236,883,282	45,302,622	17,016,700
Supplemental cash flow information:
Income taxes paid	849,773	$ 28,970	$ 567
Noncash Investing and Financing Items [Abstract]
Accrual of issuance costs in accrued expenses and other current liabilities	$ 226,537

CONSOLIDATED STATEMENTS OF CA_2

CONSOLIDATED STATEMENTS OF CASH FLOWS (Parenthetical) - USD ($)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2018
Underwriting commissions and discounts	$ 9,632,500
FYXTech BVI [Member]
Noncash assets and liabilities distribution related to reorganization		$ 10,739,601
Shenzhen Yale [Member]
Noncash assets and liabilities distribution related to reorganization		$ 161,699

Description of Business and Org

Description of Business and Organisation	12 Months Ended
Description of Business and Organisation	Dec. 31, 2020
Accounting Policies [Abstract]
Description of Business and Organisation	1. DESCRIPTION OF BUSINESS AND ORGANIZATION (a) Description of Business Yalla Group Limited (the “Company”, formerly known as “FYXTech Corporation”), through its wholly-owned subsidiaries (collectively referred to as the “Group”) operates voice-centric social networking and entertainment platform mainly in the Middle East and North Africa region. The platform allows individual users free access to the basic functions on the platform. It also provides enhanced experiences for individual users by sales of virtual items and provision of upgrade services on the platform. (b) Organization The Company was incorporated in the Cayman Islands on February 7, 2018 by the controlling individual shareholders of FYXTech Limited (“FYXTech BVI”) and Shenzhen Yale Technology Co., Ltd (“Shenzhen Yale”), who agreed to vote in concert (collectively referred to as the “Co-founders”), FYXTech BVI was incorporated in the British Virgin Islands on September 25, 2015. Shenzhen Yale was established in Shenzhen, the People’s Republic of China (the “PRC”) on September 27, 2016 Co-founders In preparation for the Reorganization, all of the Class A Preferred Equity were repurchased and extinguished in February and March 2018 and all of the Class C Preferred Equity were repurchased and extinguished in May 2018. See note 7 On May 23, 2018, the Company issued 73 million Ordinary Shares Pre-A Co-founders In June and July 2018, the Company established two wholly-owned subsidiaries, Hangzhou Yale Technology Co., Ltd. (“Hangzhou Yale”) in Hangzhou, PRC and Yalla Technology FZ-LLC Upon the completion of the Reorganization, the Company, through its wholly-owned subsidiaries, have succeeded all of the business operations of FYXTech BVI and Shenzhen Yale. Since the Company, FYXTech BVI and Shenzhen Yale were all under common control of the Co-founders As of US$ ASSETS Current assets Cash and cash equivalents 7,601,027 Prepayments and other current assets 476,880 Total current assets 8,077,907 Non-current assets Property and equipment, net 1,771 Loans to shareholders 10,260,950 Total assets 18,340,628 LIABILITIES Current liabilities Accounts payable 33,832 Accrued expenses and other current liabilities 127,867 Total current liabilities 161,699 Total liabilities 161,699

Summary of Significant Accounti

Summary of Significant Accounting Policies	12 Months Ended
Summary of Significant Accounting Policies	Dec. 31, 2020
Accounting Policies [Abstract]
Summary of Significant Accounting Policies	2. SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (a) Basis of Presentation The accompanying consolidated financial statements of the Group have been prepared in accordance with accounting principles generally accepted in the United States of America (“U.S. GAAP”). (b) Principles of Consolidation The consolidated financial statements include the financial statements of the Company and its wholly-owned subsidiaries. All intercompany transactions and balances among the Company and its wholly-owned subsidiaries have been eliminated upon consolidation. (c) Use of Estimates The preparation of the consolidated financial statements in accordance with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, related disclosures of contingent assets and liabilities at the balance sheet date, and the reported revenues and expenses during the reported period. Significant accounting estimates include, but not limited to, fair value of share-based compensation awards, ordinary shares and convertible redeemable preferred shares. Changes in facts and circumstances may result in revised estimates. Actual results could differ from those estimates, and as such, differences may be material to the consolidated financial statements. (d) Commitment and Contingencies In the normal course of business, the Group is subject to loss contingencies, such as legal proceedings and claims arising out of its business, that cover a wide range of matters, including, among others, government investigations, shareholder lawsuits, and non-income (e) Cash and Cash Equivalents Cash and cash equivalents consist of cash at bank and highly liquid investments placed with banks, which have original maturities of three months or less and are readily convertible to known amounts of cash. The Company’s cash and cash equivalents are deposited in financial institutions at below locations: As of December 31, 2019 2020 US$ US$ Financial institutions in the mainland of the PRC —Denominated in RMB 486,117 5,511,982 —Denominated in USD 1,214,485 1,819,424 Total cash balances held at mainland PRC financial institutions 1,700,602 7,331,406 Financial institutions in Hong Kong Special Administrative Region (“HK S.A.R. “) —Denominated in USD 14,929,853 133,911,336 Total cash balances held at the HK S.A.R. financial institutions 14,929,853 133,911,336 Financial institutions in UAE —Denominated in United 6,059,127 23,249,640 —Denominated in USD 17,355,953 35,813,863 Total cash balances held at the UAE financial institutions 23,415,080 59,063,503 Financial institutions in United States —Denominated in USD 119,810 10,127,775 Total cash and cash equivalents 119,810 10,127,775 Financial institutions in Singapore —Denominated in USD 5,137,277 26,449,262 Total cash balances held at the Singapore financial institutions 5,137,277 26,449,262 Total cash and cash equivalents 45,302,622 236,883,282 (f) Term D Term deposits represent deposits placed with banks with original maturities of more than three months but less than one year. The Group’s term deposits as of December 31, 2019 were denominated in USD and were deposited at a financial institution in Singapore. (g) Short-term Investments Short-term investments include financial products issued by financial institutions. The Group classifies the financial products as available-for-sale available-for-sale available-for-sale (h) Property and Equipment, net Property and equipment are stated at cost less depreciation and any impairment. Property and equipment are depreciated using the straight-line method over the estimated useful lives of the assets, as follows: Category Estimated Useful Life Electronic equipment 3 years Vehicle 4 years Office furniture 5 years Leasehold improvement Shorter of the lease term or the estimated useful life of the assets Ordinary maintenance and repairs are charged to expenses as incurred, while replacements and betterments are capitalized. When items are retired or otherwise disposed of, income is charged or credited for the difference between net book value of the item disposed and proceeds realized thereon. Property and equipment are reviewed for impairment when events or changes in circumstances indicate that the carrying value of such assets may not be recoverable. Recoverability of a long-lived asset or asset group to be held and used is measured by a comparison of the carrying amount of an asset or asset group to the estimated undiscounted future cash flows expected to be generated by the asset or asset group. If the carrying value of an asset or asset group exceeds its estimated undiscounted future cash flows, an impairment loss is recognized by the amount that the carrying value exceeds the estimated fair value of the asset or asset group. Fair value is determined through various valuation techniques including discounted cash flow models, quoted market values and third - (i) Value Added Taxes The Company’s PRC subsidiaries and Dubai subsidiary are subject to value added tax (“VAT”). Revenue from providing services is generally subject to VAT at the rate of 6 (j) Fair Value Measurements Fair value represents the price that would be received from selling an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. As such, fair value is a market-based Accounting Standards Codification (“ASC”) 820, Fair Value Measurements and Disclosures three-level Level 1 — Observable inputs that reflect quoted prices (unadjusted) for identical assets or liabilities in active markets. Level 2 — Include other inputs that are directly or indirectly observable in the marketplace. Level 3 — Unobservable inputs which are supported by little or no market activity. Accounting guidance also describes three main approaches to measuring the fair value of assets and liabilities: (1) market approach; (2) income approach and (3) cost approach. The market approach uses prices and other relevant information generated from market transactions involving identical or comparable assets or liabilities. The income approach uses valuation techniques to convert future amounts to a single present value amount. The cost approach is based on the amount that would currently be required to replace an asset. Financial assets and liabilities of the Group primarily consist cash and cash equivalents, term deposits, short-term investments, accounts payable, accrued expenses and other current liabilities. The Group measures short-term investments at fair value on a recurring basis. Short-term investments include financial products issued by financial institutions, which are valued based on price per unit quoted by financial institutions. They are categorized in Level 2 of the fair value hierarchy. As of December 31, 2019 and 2020, the carrying values of other financial instruments approximated to their fair values due to the short maturity of these instruments. (k) Revenue Recognition The Group has adopted ASC 606, Revenue from Contracts with Customers Substantially all the revenues of the Group were derived from voice-centric social networking and entertainment platform, which provides group chatting and games services. Group chatting service The Group provides group chatting service to individual users with fr e s The Group recognizes revenue relating to virtual items at the point-in-time Games service The Group provides games service to individual users through its mobile game applications. Individual users consume virtual currency to play a game, purchase virtual items which can be used to enjoy one-time privileges in the game, and upgrade service. Each game is completed within several minutes. The Group charges individual users virtual currency to play a game, which currently accounts for a small portion of games service revenue. The Group has determined that each of these games represents a distinct performance obligation. The related revenue is recognized over the period of the gameplay which takes several minutes. The Group recognizes revenue relating to virtual items upon consumption. Upgrade service primarily consists of premium rights over the period the users are registered on the platform. Revenues from the upgrade service are recognized ratably over the estimated period of the relevant user groups. The estimated period of upgrade services in both the group chatting service and games service is determined based on the expected service period derived from historical users’ behavioral pattern. This estimate is re-assessed Deferred revenue Virtual currency is non-refundable and does not have expiration date. Proceeds received from users’ purchase of virtual currency are recorded as deferred revenue. Deferred revenue (a contract liability) is recognized when the Group has an obligation to transfer services to a customer for which the Company has received consideration related to the Group’s group chatting and games services from the customer. The balance of deferred revenue as of January 1, 2018, 2019, and 2020 was US$911,190, , US$ respectively, which were recognized as revenue for the years ended December 31, 2018, 2019, and 2020, respectively. The balance as of December 31, 2020 is expected to be recognized as revenues within (l) Cost of Revenues Cost of revenues consists primarily of (i) commission fees paid to third party payment platforms, and (ii) staff cost and expenses related to the operations of the mobile platforms. (m) Selling and Marketing Expenses Selling and marketing expenses mainly consist of (i) advertising costs and market promotion expenses, and (ii) staff cost, rental and depreciation related to selling and marketing functions. Advertising costs, which consist primarily of online advertisements, are expensed as incurred. The advertising costs were US$5,296,954 , US$7,541,366 and US$12,383,514 December 31, 2018, 2019 and 2020, respectively (n) General and Administrative Expenses General and administrative expenses mainly consist of (i) staff cost, rental and depreciation related to general and administrative personnel, (ii) professional service fees; and (iii) other corporate expenses. (o) Technology and Product Development Expenses Technology and product development expenses consist primarily of (i) staff cost, and (ii) related expenses for the employees involved in designing and developing new features for the mobile platforms and self-developed mobile games. All technology and product development expenditures are expensed as incurred. (p) Government Grants Government grant is recognized when there is reasonable assurance that the Group will comply with the conditions attach to it and the grant will be received. Government grant for the purpose of giving immediate financial support to the Group with no future related costs or obligation is recognized in the Group’s consolidated statements of comprehensive (loss) / income when the grant becomes receivable. (q) Share-based Compensation The Group periodically grants share-based awards, mainly including share options to eligible employees and management, which are subject to service and performance conditions. The Group recognizes compensation cost for an equity classified award with only service conditions that has a graded vesting schedule on a straight-line basis over the requisite service period for the entire award, provided that the cumulative amount of compensation cost recognized at any date at least equals the portion of the grant date fair value of such award that is vested at that date. For equity awards that contain both a service condition and a performance condition, the Company recognizes compensation cost on a tranche-by-tranche ( r Employee Benefits The Company’s subsidiaries in PRC participate in a government mandated, defined contribution plan, pursuant to which certain retirement, medical, housing and other welfare benefits are provided to employees. PRC labor laws require the entities incorporated in China to pay to the local labor bureau a monthly contribution calculated at a stated contribution rate on the compensation of qualified employees. The Group has no further commitments beyond its monthly contribution. Employee social benefits included as expenses in the accompanying consolidated statements of comprehensive income amounted to US$337,897, US$876,074 and US$1,008,337 for the years ended December 31, 2018, 2019 and 2020, respectively. ( s Income Taxes Current income taxes are provided on the basis of income before income taxes for financial reporting purposes, and adjusted for income and expense items which are not assessable or deductible for income tax purposes, in accordance with the regulations of the relevant tax jurisdictions. Deferred income taxes are provided using the liability method. Under this method, deferred income tax assets and liabilities are recognized for the tax effects of temporary differences and are determined by applying enacted tax rates expected to apply to taxable income in the periods in which those temporary differences are expected to be recovered or settled. The effect on deferred income tax assets and liabilities of a change in tax rates or tax laws is recognized in the consolidated statements of comprehensive income in the period the change in tax rates or tax laws is enacted. A valuation allowance is provided to reduce the amount of deferred income tax assets if based on the weight of available evidence, it is more-likely-than-not The Group applies a “more likely than not” recognition threshold in the evaluation of uncertain tax positions. The Group recognizes the benefit of a tax position in its consolidated financial statements if the tax position is “more likely than not” to prevail based on the facts and technical merits of the position. Tax positions that meet the “more likely than not” recognition threshold are measured at the largest amount of tax benefit that has a greater than fifty percent likelihood of being realized upon settlement. Unrecognized tax benefits may be affected by changes in interpretation of laws, rulings of tax authorities, tax audits, and expiry of statutory limitations. In addition, changes in facts, circumstances and new information may require the Group to adjust the recognition and measurement estimates with regard to individual tax positions. Accordingly, unrecognized tax benefits are periodically reviewed and re-assessed. 2019 and ( t Operating Lease The Group leases premises for offices under non-cancellable ( u Foreign Currency The Company’s reporting currency is United States Dollars (“US$”). The functional currency of the Company and its wholly-owned subsidiaries incorporated at Dubai, HK S.A.R. and British Virgin Islands is US$. The functional currency of the Company’s PRC subsidiaries is Chinese Renminbi (“RMB”). Transactions denominated in currencies other than the functional currency are remeasured into the functional currency at the exchange rates prevailing at the date of the transaction. Monetary assets and liabilities denominated in foreign currency are remeasured into the functional currency using the applicable exchange rate at the balance sheet date. The resulted exchange differences are recorded in general and administrative expenses in the consolidated statements of comprehensive income. The financial statements of the Company’s PRC subsidiaries are translated from RMB into US$. Assets and liabilities are translated into US$ using the applicable exchange rates at the balance sheet date. Equity accounts other than earnings or deficits generated in the current period are translated into US$ using the appropriate historical rates. Revenues, expenses, gains and losses are translated into US$ using the average exchange rates for the relevant period. The resulted foreign currency translation adjustments are recorded as a component of other comprehensive income or loss in the consolidated statements of comprehensive income, and the accumulated foreign currency translation adjustments are recorded as a component of accumulated other comprehensive income in the consolidated statement of shareholders’ equity (deficit). ( v Concentration and risk The Group’s cost of revenues mainly included commission fees paid to third party payment platforms, among which two third party payment platforms individually represent greater than 10% of the Group’s cost of revenues excluding payroll and welfare and depreciation for the years ended December 31, 2018, 2019 and 2020 are as follows: For the Year Ended December 31 2018 2019 2020 A 67 % 61 % 60 % B 19 % 14 % 19 % ( w Earnings (Loss) per Share Basic earnings (loss) per share is computed by dividing net income (loss) attributable to ordinary shareholders, taking into consideration the deemed dividends to preferred shareholders (if any), by the weighted average number of ordinary shares outstanding during the year using the two-class two-class The Company’s redeemable convertible preferred shares are participating securities, as they have contractual nonforfeitable right to participate in distributions of earnings. The redeemable convertible preferred shares have no contractual obligation to fund or otherwise absorb the Group’s losses. Accordingly, any undistributed net income is allocated on a pro rata basis to ordinary shares and redeemable convertible preferred shares; whereas any undistributed net loss is allocated to ordinary shares only. Diluted earnings (loss) per share is calculated by dividing net earnings (loss) attributable to ordinary shareholders, as adjusted for the effect of dilutive ordinary equivalent shares, if any, by the weighted average number of ordinary and dilutive ordinary equivalent shares outstanding during the year. Ordinary equivalent shares consist of ordinary shares issuable upon the conversion of the preferred shares, using the if-converted ( x Segment Reporting The Group uses the management approach in determining its operating segments. The Group’s chief operating decision maker has been identified as the Chief Executive Officer, who reviews consolidated results when making decisions about allocating resources and assessing performance of the Group. For the purpose of internal reporting and management’s operation review, the Group’s Chief Executive Officer does not segregate the Group’s business by product or service lines. Management has determined that the Group has one operating segment, which is the social networking and entertainment platform. ( y Statutory Reserve In accordance with the PRC Company Laws, the PRC subsidiaries must make appropriations from after-tax non-distributable after-tax registered capital of the PRC companies. Appropriation to the discretionary surplus fund is made at the discretion of the PRC companies. The statutory surplus fund and discretionary surplus fund are restricted for use. They may only be applied to offset losses or increase the registered capital of the respective companies. These reserves are not allowed to be transferred to the Company by way of cash dividends, loans or advances, nor can they be distributed except for liquidation. As of December 31, 2019 and 2020, the statutory reserve of the Company’s PRC subsidiaries was US$196,519 and US $424,682, respectively. UAE Company Laws requires 10% of Yalla Dubai’s annual net profits to be set aside as a statutory reserve. This allocation may be suspended by a shareholders’ decision once the reserve has reached an amount equal to 50% of the share capital of the company. As of December 31, 2019 and 2020, the statutory reserve of Yalla Dubai was , respectively ( z Deferred initial public offering costs Direct costs incurred by the Company attributable to its proposed initial public offering (“IPO”) of ordinary shares in the United States were deferred and recorded as other assets and were offset against the gross proceeds received from such offering. ( aa Recent Accounting Pronouncements In February 2016, the FASB issued Accounting Standards Updates (“ASU”) No. 2016-02, Leases Topic 842 2019-10, In June 2016, the FASB issued ASU 2016-13, Financial Instruments—Credit Losses (Topic 326) Measurement of Credit Losses on Financial Instruments 2016-13 2019-10. Financial Instruments—Credit Losses .

Short-term Investments

Short-term Investments	12 Months Ended
Short-term Investments	Dec. 31, 2020
Short-term Investments [Abstract]
Short-term Investments	3. SHORT-TERM INVESTMENTS Short-term investments consisted of the following: As of December 31, 2019 2020 US$ US$ Aggregate cost 1,493,411 766,295 Gross unrealized gain 13,574 — Aggregate fair value 1,506,985 766,295 The Group’s short-term investments represent financial products issued by Bank of China and Silicon Valley Bank.

Prepayments and Other Current A

Prepayments and Other Current Assets	12 Months Ended
Prepayments and Other Current Assets	Dec. 31, 2020
Prepaid Expense and Other Assets, Current [Abstract]
Prepayments and Other Current Assets	4. PREPAYMENTS AND OTHER CURRENT ASSETS Prepayments and other current assets consisted of the following: As of December 31, 2019 2020 US$ US$ Amounts due from third party payment platforms 2,782,990 14,237,874 Others 1,147,316 1,487,550 Prepayments and Other Current Assets 3,930,306 15,725,424

Accrued Expenses and Other Curr

Accrued Expenses and Other Current Liabilities	12 Months Ended
Accrued Expenses and Other Current Liabilities	Dec. 31, 2020
Payables and Accruals [Abstract]
Accrued Expenses and Other Current Liabilities	5. ACCRUED EXPENSES AND OTHER CURRENT LIABILITIES Accrued expenses and other current liabilities consist of the following: As of December 31, 2019 2020 US$ US$ Accrued payroll and welfare 651,470 4,656,854 Taxes payable 721,857 709,001 Others 203,203 782,631 Accrued Expenses and Other Current Liabilities 1,576,530 6,148,486

Ordinary Shares

Ordinary Shares	12 Months Ended
Ordinary Shares	Dec. 31, 2020
Stockholders' Equity Note [Abstract]
Ordinary Shares	6. ORDINARY SHARES Upon incorporation in 2018, the Company’s authorized ordinary shares were 500,000,000 shares with a par value of US$0.0001 per share. The authorized shares of the Company were divided into 448,763,811 Ordinary Shares and 51,236,189 preferred shares in connection with issuance of Series Angel, Series Pre-A, Series A Redeemable Convertible Preferred Shares. The number of ordinary shares issued and outstanding was 73,393,941 as of December 31, 2019. Immediately prior to the completion of IPO, the Company’s authorized share capital was US$50,000 divided into 500,000,000 shares comprising of (i) 400,000,000 Class A Ordinary Shares with a par value of US$0.0001 each, (ii) 100,000,000 Class B Ordinary Shares with a par value of US$0.0001 each. Immediately prior to the completion of IPO, all outstanding Redeemable Convertible Preferred Shares, including (i) 4,955,327 Series Angel Redeemable Convertible Preferred Shares with a par value of US$0.0001 each, (ii) 9,917,226 of Series Pre-A Redeemable Convertible Preferred Shares with a par value of US$0.0001 each, and (iii) 36,363,636 of Series A Redeemable Convertible Preferred Shares with a par value of US$0.0001 each, were converted into Class A Ordinary Shares on a one-to-one basis. All outstanding ordinary shares were re-designated and re-classified as Class A Ordinary Shares on a one-to-one basis, except that 24,734,013 ordinary shares held by YooYoo Limited were re-designated and re-classified as Class B Ordinary Shares on a one-to-one basis. Upon the completion of the Company’s initial public offering and exercise of the green shoes options, the Company issued 18,600,000 and 700,000 Class A Ordinary Shares at price of US$7.5 per share, respectively. The net proceeds after deducting underwriting commissions and discounts were US$135,117,436. As of December 31, 2020, there were 119,196,117 Class A Ordinary Shares and 24,734,013 Class B ordinary shares outstanding. Holders of Class A Ordinary Shares and Class B Ordinary Shares have the same rights except for voting and conversion rights. Each Class A Ordinary Share entitles the holder to one vote on all matters subject to vote at general meetings of the Company, and each Class B Ordinary Share entitles the holder to twenty votes on all matters subject to vote at general meetings of the Company.

Mezzanine Equity

Mezzanine Equity	12 Months Ended
Mezzanine Equity	Dec. 31, 2020
Temporary Equity [Abstract]
Mezzanine Equity	7. MEZZANINE EQUITY Class A, Class B and Class C Redeemable Convertible Preferred Shares In April and September 2016, FYXTech BVI and Shenzhen Yale issued Class A Redeemable Convertible Preferred Shares to investors in exchange for a total cash consideration of US$300,000. The rights, preferences and privileges of Class A Redeemable Convertible Preferred Shares issued by FYXTech BVI and Shenzhen Yale (collectively “Class A Preferred Equity”) are substantially identical. In January and June 2017, FYXTech BVI and Shenzhen Yale issued Class B Redeemable Convertible Preferred Shares to individual investors in exchange for a total cash consideration of US$218,233. The rights, preferences and privileges of Class B Redeemable Convertible Preferred Shares issued by FYXTech BVI and Shenzhen Yale (collectively “Class B Preferred Equity”) are substantially identical. In June 2017, FYXTech BVI and Shenzhen Yale issued Class C Redeemable Convertible Preferred Shares to an investor in exchange for a total cash consideration of US$726,195. The rights, preferences and privileges of Class C Redeemable Convertible Preferred Shares issued by FYXTech BVI and Shenzhen Yale (collectively “Class C Preferred Equity”) are substantially identical. Upon the issuance of Class C Preferred Equity, the holders of Class A Preferred Equity, the Class B Preferred Equity and the Class C Preferred Equity owned 12%, 4% and 10% of FYXTech BVI and Shenzhen Yale’s equity interest on a fully-diluted basis, respectively. The rights, preferences and privileges of Class A Preferred Equity, Class B Preferred Equity and Class C Preferred Equity are as follows: Redemption Rights Each holder of Class A Preferred Equity and Class B Preferred Equity shall be entitled to receive an amount equal to 100% of the original purchase price of such preferred equity if deemed liquidation events as defined in the agreement which were outside of the control of FYXTech BVI and Shenzhen Yale occur. Each holder of Class C Preferred Equity shall have the right to request FYXTech BVI and Shenzhen Yale to redeem Class C Preferred Equity held by such shareholder at the price of the original purchase price of such Class C Preferred Equity plus a simple interest rate of 15% per annum, and minus cumulative dividends that has been distributed on such Class C Preferred Equity if (1) FYXTech BVI or Shenzhen Yale fails to consummate an IPO within five (5) years after the closing date of the purchase of the Class C Preferred Equity, or (2) a material breach as defined in the agreement occurs. Conversion Rights Each of Class A Preferred Equity, Class B Preferred Equity and Class C Preferred Equity may be converted into ordinary shares of FYXTech BVI at the sole discretion of its holder at the initial conversion ratio of 1:1. The initial conversion ratio of Class A Preferred Equity, Class B Preferred Equity and Class C Preferred Equity is subject to contingent conversion adjustments for any new securities issued. Voting Rights Each holder of Class A Preferred Equity, Class B Preferred Equity and Class C Preferred Equity shall be entitled to that number of votes corresponding to the number of ordinary shares on an as-converted Dividend Rights Each of Class A Preferred Equity, Class B Preferred Equity and Class C Preferred Equity shall be entitled to an equal share (on an as-converted Liquidation Preferences In the event of a liquidation, dissolution, winding up or deemed liquidation defined in the agreement, the distributable assets thereof shall be distributed among the shareholders as follows: (a) Firstly, each holder of Class C Preferred Equity shall have the right to receive the higher of the following: (1) the fair market value multiplied by the share percentage of the Class C Preferred Equity that such holder holds in FYXTech BVI and Shenzhen Yale, (2) 150% of the original purchase (b) Secondly, after the payment of the Class C Liquidation Preference, each holder of Class B Preferred Equity shall be entitled to receive an amount equal to one hundred percent (100%) of the original purchase price of such Class B Preferred Equity; (c) Thirdly, after the payment of the Class B Liquidation Preference, each holder of the Class A Preferred Equity shall be entitled to receive an amount equal to one hundred percent (100%) of the original purchase price of such Class A Preferred Equity; (d) Finally Accounting of Class A, Class B and Class C Preferred Equity The Company classified Class A Preferred Equity and Class B Preferred Equity as mezzanine equity in the consolidated balance sheet as they were contingently redeemable upon the occurrence of deemed liquidation events which were outside of the control of FYXTech BVI and Shenzhen Yale. The Company classified Class C Preferred Equity as mezzanine equity in the consolidated balance sheet as they were contingently redeemable upon the occurrence of IPO or defined events which were outside of the control of FYXTech BVI and Shenzhen Yale. The Company concluded the embedded conversion and redemption option of Class A Preferred Equity, Class B Preferred Equity and Class C Preferred Equity did not need to be bifurcated pursuant to ASC 815 because these terms do not permit net settlement, nor they can be readily settled net by a means outside the contract, nor they can provide for delivery of an asset that puts the holders in a position not substantially different from net settlement. The Company also determined that there was no beneficial conversion feature attributable to Class A Preferred Equity, Class B Preferred Equity and Class C Preferred Equity because the initial effective conversion prices of these Preferred Equity were higher than the estimated fair value of FYXTech BVI and Shenzhen Yale’s ordinary shares at each commitment dates. Class A Preferred Equity, Class B Preferred Equity and Class C Preferred Equity were recorded initially at fair value, net of issuance costs. The Company accreted changes in the redemption value of Class A Preferred Equity, Class B Preferred Equity and Class C Preferred Equity over the period from the date of issuance to the earliest redemption date using the interest method. The accretions were recorded against retained earnings, or in the absence of retained earnings, by charges against additional paid-in paid-in FYXTech BVI and Shenzhen Yale repurchased Class A Preferred Equity in February 2018 and March 2018 in exchange for a total cash consideration of US$3 million. FYXTech BVI and Shenzhen Yale repurchased Class C Preferred Equity in May 2018 in exchange for a cash consideration of US$4.6 million. The repurchased preferred shares were cancelled immediately. The excess of the repurchase price over the carrying amount of Class A Preferred Equity and Class C Preferred Equity in the amount of US$2,700,000 and US$3,781,363, respectively, representing a return to the holders of Class A Preferred Equity and Class C Preferred Equity was treated as deemed dividends to these Preferred Equity Holders. The activities of Class A Preferred Equity, Class B Preferred Equity and Class C Preferred Equity for the year ended December 31, 2018 are as follows: Class A Class B Class C Total US$ US$ US$ US$ Balance as of January 1, 2018 300,000 218,233 772,382 1,290,615 Accretion — — 30,439 30,439 Repurchase (300,000 ) — (802,821 ) (1,102,821 ) Re-designation — (218,233 ) — (218,233 ) Balance as of December 31, 2018 — — — — Series Angel, Series Pre-A On May 23, 2018, the Company issued 4,955,327 Series Angel Redeemable Convertible Preferred Shares (“Series Angel Preferred Shares”), with par value of US$0.0001 per share to the Class B Preferred Equity Holders at minimal consideration. On May 23, 2018, the Company issued 9,917,226 Series Pre-A Pre-A Co-founders As stated in note 1, in connection with the Reorganization, the equity structure of the Company was substantially identical to that of FYXTech BVI and Shenzhen Yale immediately before the Reorganization on a fully-diluted basis. Therefore, the Company considered that on May 23, 2018, Class B Preferred Equity were redesignated into Series Angel Preferred Shares, and the ordinary shares which represented 11% equity interest of FYXTech BVI and Shenzhen Yale were redesignated into Series Pre-A On May 23, 2018, the Company issued 36,363,636 Series A Redeemable Convertible Preferred Shares (“Series A Preferred Shares”) to third-party investors in exchange for a total cash consideration of US$20 million, or US$0.5500 per share. Total issuance costs of Series A Preferred Shares were US$922,589. The rights, preferences and privileges of Series Angel Preferred Shares, Series Pre-A Redemption Rights Preferred Shares shall be redeemable at the option of holders of the Preferred Shares if: (1) the Company has not consummated a Qualified Initial Public Offering (“Qualified IPO”) within five (5) years after the issuance of Preferred Shares; or (2) the material breach as defined in the agreement occurs. The redemption price of Series Angel Preferred Share, Series Pre-A Pre-A The redemption preference from high priority to low priority is in sequence as follows: (i) Series A Preferred Shares, (ii) Series Pre-A Conversion Rights Each holder of Preferred Shares shall have the right, at such holder’s sole discretion, to convert all or any portion of its Preferred Shares into ordinary shares Pre-A 1-to-1 Each preferred share shall automatically be converted into ordinary shares, at the then applicable preferred share conversion price (i) upon the closing of a Qualified IPO or (ii) the prior written approval of the holders of a majority of the Preferred Shares then outstanding. Voting Rights Each Preferred Share holder shall carry a number of votes equal to the number of ordinary shares then issuable upon its conversion into ordinary shares at the record date for determination of the shareholders entitled to vote on such matters, or, if no such record date is established, at the date such vote is taken or any written consent of shareholders is solicited. Dividend Rights Each holder of the Preferred Shares shall be entitled to receive preferential, non-cumulative ordinary shares as-converted Liquidation Preferences In the event of any liquidation, dissolution, winding up or deemed liquidation defined in the agreement, either voluntary or involuntary, the holders of Preferred Shares shall be entitled to receive, an amount equal to one hundred percent of Preferred Shares Issuance Price and all accrued or declared but unpaid dividends thereon. The liquidation right should be settled in the sequence of (i) Series A Preferred Shares, (ii) Series Pre-A Accounting of Series Angel, Series Pre-A The Company classified Series Angel Preferred Shares, Series Pre-A s The Company concluded the embedded conversion and redemption option of Series Angel Preferred Shares, Series Pre-A The Company also determined that there was no beneficial conversion feature attributable to the Series Angel Preferred Shares, Series Pre-A As described above, on May 23, 2018, Class B Preferred Equity were redesignated into Series Angel Preferred Shares. The Company determines whether such amendment or modification to the terms of Series Angel Preferred Shares represents an extinguishment based on a fair value approach. Since the difference between the fair value of the Class B Preferred Shares and Series Angel Preferred Shares upon the modification date was immaterial, the Company initially recorded the Series Angel Preferred Shares at the carrying amount of Class B Preferred Shares on the issuance date of Series Angel Preferred Shares. As described above, on May 23, 2018, certain portion of ordinary shares of FYXTech BVI and Shenzhen Yale were redesignated into Series Pre-A Pre-A Pre-A Pre-A The Company accreted changes in the redemption value of Series Angel Preferred Shares and Series A Preferred Shares over the period from the date of issuance to the earliest redemption date using the interest method. The accretions were recorded against retained earnings, or in the absence of retained earnings, by charges against additional paid-in paid-in Pre-A All of the Redeemable Convertible Preferred Shares were converted to equivalent number of Class A Ordinary Shares immediately upon the completion of the Company’s initial public offering on September 30, 2020. The activities of Series Angel Preferred Shares, Series Pre-A Series Angel Series Pre-A Series A Total US$ US$ US$ US$ Balance as of January 1, 2019 234,394 3,570,201 20,157,863 23,962,458 Accretion 29,214 — 1,911,038 1,940,252 Balance as of December 31, 2019 263,608 3,570,201 22,068,901 25,902,710 Accretion 24,299 — 1,552,727 1,577,026 Conversion to ordinary shares (287,907 ) (3,570,201 ) (23,621,628 ) (27,479,736 ) Balance as of December 31, 2020 — — — —

Shares-Based Compensation

Shares-Based Compensation	12 Months Ended
Shares-Based Compensation	Dec. 31, 2020
Share-based Payment Arrangement [Abstract]
Shares Based Compensation	8. SHARE-BASED COMPENSATION On June 22, 2018, the Board of Directors of the Company approved and adopted the 2018 Share Incentive Plan (the “2018 Plan”), under which the Company reserves 11,733,506 ordinary shares to motivate employees of the Group. On June 25, 2019, the Board of Directors of the Company approved the reservation of additional 15,000,000 ordinary shares for issuance under the 2018 Plan. On June 16, 2020, the Board of Directors of the Company approved the reservation of additional 15,000,000 ordinary shares for issuance under the 2018 Plan. Under the 2018 plan, the options are generally subject to a four year service schedule, under which an employee earns an entitlement to vest 25% of his/her option at the end of each year of complete service. The Company granted 4,873,822, 19,252,381, 2,607,303 , and 116,000 stock options to its employees in June 2018, June 2019, December 2019, June 2020 and August 2020, respectively A summary of the share options activities for the years ended December 31, 2020 is presented below Number of Weighted Weighted Aggregate US$ US$ Outstanding at January 1, 2020 26,733,506 0.19 8.50 100,101,256 Granted 15,116,000 0.35 Forfeited (136,000 ) 0.10 Outstanding at December 31, 2020 41,713,506 0.25 8.78 587,342,349 Vested and expect to be 41,713,506 0.25 8.78 587,342,349 Exercisable as of December 31, 202 0 8,669,543 0.19 8.16 122,626,494 The fair value of the options granted is estimated on the date of grant using the binomial option pricing model with the following key assumptions used: 2018 2019 2020 Risk-free rate of return (per annum) 2.9% 1.9%-2.0% 0.70% Volatility 57.10% 55%-56.2% 56.60% Expected dividend yield 0% 0% 0% Exercise multiple 2.2 2.2-2.8 2.2-2.8 Fair value of underlying ordinary share 0.35 3.02-3.94 5.12 Expected term 10 10 10 The estimated fair values of the underlying ordinary shares at the grant date was estimated by management with the assistance of an independent valuation firm. The Company first determined its enterprise value by using income approach, which required the estimation of future cash flows, and the application of an appropriate discount rate with reference to comparable listed companies engaged in the similar industry to convert such future cash flows to a single present value, and then allocated the enterprise value between the ordinary shares and preferred shares. The expected volatility was estimated based on the historical volatility of comparable peer public companies with a time horizon close to the expected term of the Company’s options. The risk-free interest rate was estimated based on the yield to maturity of U.S. treasury bonds denominated in USD for a term consistent with the expected term of the Company’s options in effect at the option valuation date. The expected exercise multiple was estimated as the average ratio of the stock price to the exercise price of when employees would decide to voluntarily exercise their vested options. As the Company did not have sufficient information of past employee exercise history, it was estimated by referencing to a widely-accepted academic research publication. Expected dividend yield is zero as the Company does not anticipate any dividend payments in the foreseeable future. Expected term is the contract life of the option. The weighted average grant date fair value of the share options for the years ended December 31, 2018, 2019 and 2020 was US$0.26, US$2.96 and US$4.78, respectively. Since the exercisability is dependent upon the completion of an initial public offering of the Company, no compensation expense relating to the options was recorded for the years ended December 31, 2018 and 2019. For the year ended December 31, 2020, the Company recognized US$60,805,483 share-based compensation expenses. As of December 31, 2020, US$76,830,482 non-vested

Income Tax

Income Tax	12 Months Ended
Income Tax	Dec. 31, 2020
Income Tax Disclosure [Abstract]
Income Tax	9 a) Income tax Cayman Islands Under the current laws of the Cayman Islands, the Company is not subject to tax on income or capital gain. Additionally, the Cayman Islands does not impose a withholding tax on payments of dividends to shareholders. British Virgin Islands (“BVI”) Under the current laws of the BVI, the Company’s entity incorporated in the BVI is not subject to tax on income or capital gains. In addition, upon payments of dividends by the entity to their shareholders, no BVI withholding tax will be imposed. UAE Under the current laws of the UAE, the Company is not subject to tax on income or capital gain. Additionally, UAE does not impose a withholding tax on payments of dividends to shareholders. Hong Kong Under the current Hong Kong Inland Revenue Ordinance, the Company’s Hong Kong subsidiary is subject to Hong Kong profits tax at the rate of 16.5% on its taxable income generated from the operations in Hong Kong. Payments of dividends by the Hong Kong subsidiary to the Company is not subject to withholding tax in Hong Kong. A two-tiered Hong Kong profits tax has been made in the financial statements as the subsidiaries in Hong Kong have accumulated loss for the years ended December 31, 2018, 2019 and 2020. PRC The Company’s PRC subsidiaries are subject to the PRC Corporate Income Tax Law (“CIT Law”) and are taxed at the statutory income tax rate of 25%, unless otherwise specified. The CIT Law also provides that an enterprise established under the laws of a foreign country or region but whose “ de facto de facto non-PRC Income before income taxes were generated in the following jurisdictions: For the Year Ended December 31, 2018 2019 2020 US$ US$ US$ British Virgin Islands (B.V.I) 22,887,838 (382 ) (976 ) UAE (3,331,781 ) 27,663,586 63,056,081 PRC, excluding HK S.A.R. 845,644 2,142,160 (57,038,284 ) HK S.A.R. (619 ) (85,436 ) 65,233 Cayman Islands 103,904 (359,359 ) (2,007,587 ) Total 20,504,986 29,360,569 4,074,467 Income tax expense recognized in the consolidated statement of comprehensive income consists of current income tax expense. The effective income tax rate for the years ended December 31, 2018, 2019 and 2020 was 1.3%, 1.5% and 21.1%, respectively. All the income tax expense was related to the subsidiaries located in PRC, which were subject to the PRC statutory income tax at the rate of 25% for their taxable income. Deferred income tax assets are as follows: As of December 31, 2019 2020 US$ US$ Deferred tax assets —Net operating loss carry forwards 40,859 3,334 Less: Valuation allowance (40,859 ) (3,334 ) Total deferred income tax asset s — — Changes in valuation allowance are as follows: As of December 31, 2019 2020 US$ US$ Balance at the beginning of the year 102 40,859 Additions 40,757 131 Reversals — (37,656) Balance at the end of the year 40,859 3,334 A valuation allowance is provided against deferred income tax assets when the Group determines that it is more likely than not that the deferred income tax assets will not be utilized in the foreseeable future. In making such determination, the Group evaluates a variety of factors including the Group’s operating history, accumulated deficit or retained earnings, existence of taxable temporary differences and reversal periods.

Dividend To Shareholders

Dividend To Shareholders	12 Months Ended
Dividend To Shareholders	Dec. 31, 2020
Dividends [Abstract]
Dividend to Shareholders	10 On May 18, 2020, the Board of Directors of the Company approved the declaration of cash dividend of US$0.07 per share to the Company’s ordinary shareholders and preferred shareholders in the amount of , which was paid in May 2020

Earnings (Loss) Per Share

Earnings (Loss) Per Share	12 Months Ended
Earnings (Loss) Per Share	Dec. 31, 2020
Earnings Per Share [Abstract]
Earnings (Loss) Per Share	11 The following table sets forth the basic and diluted earnings (loss) per share computation and provides a reconciliation of the numerator and denominator for the periods presented. Shares issuable for little consideration relating to the vested share options have been included in the number of outstanding shares used for basic earnings per share: For the Year Ended December 31, 2018 2019 2020 US$ US$ US$ Numerator: Net Income 20,241,623 28,924,803 3,213,386 Deemed dividend to Class A Redeemable Convertible Preferred Equity Holder s (2,700,000 ) — — Deemed dividend to Class C Redeemable Convertible Preferred Equity Holder (3,781,363 ) — — Deemed dividend to Series Pre-A (3,570,201 ) — — Accretion of redeemable convertible preferred shares (1,127,052 ) (1,940,252 ) (1,577,026 ) Dividends distributed to redeemable convertible preferred shareholders — — (3,704,083 ) Distribution to the shareholders of FYXTech BVI and Shenzhen Yale in connection with the Reorganization (18,146,091 ) — — Earnings attributable to redeemable convertible preferred shareholders — (11,093,510 ) — Numerator for basic and diluted earnings (loss) per share calculation (9,083,084 ) 15,891,041 (2,067,723 ) Denominator: Weighted average number of ordinary shares 73,393,941 73,393,941 91,755,810 Denominator for basic and diluted earnings (loss) per share calculation 73,393,941 73,393,941 91,755,810 Earnings (loss) per ordinary share — Basic and diluted (0.12 ) 0.22 (0.02 ) For the purpose of calculating loss per share for the year ended December 31, 2018, the weighted average number of ordinary shares outstanding used in the calculation has been retrospectively adjusted to reflect the issuance of ordinary shares in connection with the Reorganization (see note 1), as if the Reorganization had occurred at the beginning of the year. The potential dilutive securities that have not been included in the calculation of diluted /earnings (loss) per share as their inclusion would be anti-dilutive are as follow: For the Year Ended December 31, 2018 2019 2020 Redeemable convertible preferred shares 51,236,189 51,236,189 — Share options — — 35,764,660

Revenue Information

Revenue Information	12 Months Ended
Revenue Information	Dec. 31, 2020
Revenue from Contract with Customer [Abstract]
Revenue Information	12 Revenues consist of the following: For the Year Ended December 31, 2018 2019 2020 US$ US$ Revenues generated from group chatting services 42,371,174 63,437,224 122,978,167 Revenues generated from game services — 27,350 11,949,243 Total revenues 42,371,174 63,464,574 134,927,410 The Company’s platform does not require real-name and country of registration of its users. Therefore the Company does not disclose the revenue information by geographical region because country information of its users are not available or not verified by the Company.

Related Party Transactions

Related Party Transactions	12 Months Ended
Related Party Transactions	Dec. 31, 2020
Related Party Transactions [Abstract]
Related Party Transactions	13 On July 1, 2018, the Co-founders Co-founders. Co-founders. Co-founders Co-founders

Commitments and Contingencies

Commitments and Contingencies	12 Months Ended
Commitments and Contingencies	Dec. 31, 2020
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	14 The Group leases its offices under non-cancelable operating lease agreements. Rental expenses were US$235,465, December 31, 2018, 2019 and 2020 , respectively. As of December 31, 2020, future minimum lease commitments, all under office non-cancelable operating lease agreements, were as follows: Year ending December 31, Office 2021 852,434 2022 474,016 2023 202,676 Except for those disclosed above, the Group did not have any significant capital or other commitments, long-term obligations, or guarantees as of December 31, 2020.

Summary of Significant Accoun_2

Summary of Significant Accounting Policies (Policies)	12 Months Ended
Summary of Significant Accounting Policies (Policies)	Dec. 31, 2020
Accounting Policies [Abstract]
Basis of Presentation	(a) Basis of Presentation The accompanying consolidated financial statements of the Group have been prepared in accordance with accounting principles generally accepted in the United States of America (“U.S. GAAP”).
Principles of Consolidation	(b) Principles of Consolidation The consolidated financial statements include the financial statements of the Company and its wholly-owned subsidiaries. All intercompany transactions and balances among the Company and its wholly-owned subsidiaries have been eliminated upon consolidation.
Use of Estimates	(c) Use of Estimates The preparation of the consolidated financial statements in accordance with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, related disclosures of contingent assets and liabilities at the balance sheet date, and the reported revenues and expenses during the reported period. Significant accounting estimates include, but not limited to, fair value of share-based compensation awards, ordinary shares and convertible redeemable preferred shares. Changes in facts and circumstances may result in revised estimates. Actual results could differ from those estimates, and as such, differences may be material to the consolidated financial statements.
Commitment and Contingencies	(d) Commitment and Contingencies In the normal course of business, the Group is subject to loss contingencies, such as legal proceedings and claims arising out of its business, that cover a wide range of matters, including, among others, government investigations, shareholder lawsuits, and non-income
Cash and Cash Equivalents	(e) Cash and Cash Equivalents Cash and cash equivalents consist of cash at bank and highly liquid investments placed with banks, which have original maturities of three months or less and are readily convertible to known amounts of cash. The Company’s cash and cash equivalents are deposited in financial institutions at below locations: As of December 31, 2019 2020 US$ US$ Financial institutions in the mainland of the PRC —Denominated in RMB 486,117 5,511,982 —Denominated in USD 1,214,485 1,819,424 Total cash balances held at mainland PRC financial institutions 1,700,602 7,331,406 Financial institutions in Hong Kong Special Administrative Region (“HK S.A.R. “) —Denominated in USD 14,929,853 133,911,336 Total cash balances held at the HK S.A.R. financial institutions 14,929,853 133,911,336 Financial institutions in UAE —Denominated in United 6,059,127 23,249,640 —Denominated in USD 17,355,953 35,813,863 Total cash balances held at the UAE financial institutions 23,415,080 59,063,503 Financial institutions in United States —Denominated in USD 119,810 10,127,775 Total cash and cash equivalents 119,810 10,127,775 Financial institutions in Singapore —Denominated in USD 5,137,277 26,449,262 Total cash balances held at the Singapore financial institutions 5,137,277 26,449,262 Total cash and cash equivalents 45,302,622 236,883,282
Term deposits	(f) Term D Term deposits represent deposits placed with banks with original maturities of more than three months but less than one year. The Group’s term deposits as of December 31, 2019 were denominated in USD and were deposited at a financial institution in Singapore.
Short-term Investments	(g) Short-term Investments Short-term investments include financial products issued by financial institutions. The Group classifies the financial products as available-for-sale available-for-sale available-for-sale
Property and Equipment, net	(h) Property and Equipment, net Property and equipment are stated at cost less depreciation and any impairment. Property and equipment are depreciated using the straight-line method over the estimated useful lives of the assets, as follows: Category Estimated Useful Life Electronic equipment 3 years Vehicle 4 years Office furniture 5 years Leasehold improvement Shorter of the lease term or the estimated useful life of the assets Ordinary maintenance and repairs are charged to expenses as incurred, while replacements and betterments are capitalized. When items are retired or otherwise disposed of, income is charged or credited for the difference between net book value of the item disposed and proceeds realized thereon. Property and equipment are reviewed for impairment when events or changes in circumstances indicate that the carrying value of such assets may not be recoverable. Recoverability of a long-lived asset or asset group to be held and used is measured by a comparison of the carrying amount of an asset or asset group to the estimated undiscounted future cash flows expected to be generated by the asset or asset group. If the carrying value of an asset or asset group exceeds its estimated undiscounted future cash flows, an impairment loss is recognized by the amount that the carrying value exceeds the estimated fair value of the asset or asset group. Fair value is determined through various valuation techniques including discounted cash flow models, quoted market values and third -
Value Added Taxes	(i) Value Added Taxes The Company’s PRC subsidiaries and Dubai subsidiary are subject to value added tax (“VAT”). Revenue from providing services is generally subject to VAT at the rate of 6
Fair Value Measurement	(j) Fair Value Measurements Fair value represents the price that would be received from selling an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. As such, fair value is a market-based Accounting Standards Codification (“ASC”) 820, Fair Value Measurements and Disclosures three-level Level 1 — Observable inputs that reflect quoted prices (unadjusted) for identical assets or liabilities in active markets. Level 2 — Include other inputs that are directly or indirectly observable in the marketplace. Level 3 — Unobservable inputs which are supported by little or no market activity. Accounting guidance also describes three main approaches to measuring the fair value of assets and liabilities: (1) market approach; (2) income approach and (3) cost approach. The market approach uses prices and other relevant information generated from market transactions involving identical or comparable assets or liabilities. The income approach uses valuation techniques to convert future amounts to a single present value amount. The cost approach is based on the amount that would currently be required to replace an asset. Financial assets and liabilities of the Group primarily consist cash and cash equivalents, term deposits, short-term investments, accounts payable, accrued expenses and other current liabilities. The Group measures short-term investments at fair value on a recurring basis. Short-term investments include financial products issued by financial institutions, which are valued based on price per unit quoted by financial institutions. They are categorized in Level 2 of the fair value hierarchy. As of December 31, 2019 and 2020, the carrying values of other financial instruments approximated to their fair values due to the short maturity of these instruments.
Revenue Recognition	(k) Revenue Recognition The Group has adopted ASC 606, Revenue from Contracts with Customers Substantially all the revenues of the Group were derived from voice-centric social networking and entertainment platform, which provides group chatting and games services. Group chatting service The Group provides group chatting service to individual users with fr e s The Group recognizes revenue relating to virtual items at the point-in-time Games service The Group provides games service to individual users through its mobile game applications. Individual users consume virtual currency to play a game, purchase virtual items which can be used to enjoy one-time privileges in the game, and upgrade service. Each game is completed within several minutes. The Group charges individual users virtual currency to play a game, which currently accounts for a small portion of games service revenue. The Group has determined that each of these games represents a distinct performance obligation. The related revenue is recognized over the period of the gameplay which takes several minutes. The Group recognizes revenue relating to virtual items upon consumption. Upgrade service primarily consists of premium rights over the period the users are registered on the platform. Revenues from the upgrade service are recognized ratably over the estimated period of the relevant user groups. The estimated period of upgrade services in both the group chatting service and games service is determined based on the expected service period derived from historical users’ behavioral pattern. This estimate is re-assessed Deferred revenue Virtual currency is non-refundable and does not have expiration date. Proceeds received from users’ purchase of virtual currency are recorded as deferred revenue. Deferred revenue (a contract liability) is recognized when the Group has an obligation to transfer services to a customer for which the Company has received consideration related to the Group’s group chatting and games services from the customer. The balance of deferred revenue as of January 1, 2018, 2019, and 2020 was US$911,190, , US$ respectively, which were recognized as revenue for the years ended December 31, 2018, 2019, and 2020, respectively. The balance as of December 31, 2020 is expected to be recognized as revenues within
Cost of Revenues	(l) Cost of Revenues Cost of revenues consists primarily of (i) commission fees paid to third party payment platforms, and (ii) staff cost and expenses related to the operations of the mobile platforms.
Selling and Marketing Expenses	(m) Selling and Marketing Expenses Selling and marketing expenses mainly consist of (i) advertising costs and market promotion expenses, and (ii) staff cost, rental and depreciation related to selling and marketing functions. Advertising costs, which consist primarily of online advertisements, are expensed as incurred. The advertising costs were US$5,296,954 , US$7,541,366 and US$12,383,514 December 31, 2018, 2019 and 2020, respectively
General and Administrative Expenses	(n) General and Administrative Expenses General and administrative expenses mainly consist of (i) staff cost, rental and depreciation related to general and administrative personnel, (ii) professional service fees; and (iii) other corporate expenses.
Technology and Product Development Expenses	(o) Technology and Product Development Expenses Technology and product development expenses consist primarily of (i) staff cost, and (ii) related expenses for the employees involved in designing and developing new features for the mobile platforms and self-developed mobile games. All technology and product development expenditures are expensed as incurred.
Government Grants	(p) Government Grants Government grant is recognized when there is reasonable assurance that the Group will comply with the conditions attach to it and the grant will be received. Government grant for the purpose of giving immediate financial support to the Group with no future related costs or obligation is recognized in the Group’s consolidated statements of comprehensive (loss) / income when the grant becomes receivable.
Share-based Compensation	(q) Share-based Compensation The Group periodically grants share-based awards, mainly including share options to eligible employees and management, which are subject to service and performance conditions. The Group recognizes compensation cost for an equity classified award with only service conditions that has a graded vesting schedule on a straight-line basis over the requisite service period for the entire award, provided that the cumulative amount of compensation cost recognized at any date at least equals the portion of the grant date fair value of such award that is vested at that date. For equity awards that contain both a service condition and a performance condition, the Company recognizes compensation cost on a tranche-by-tranche
Employee Benefits	( r Employee Benefits The Company’s subsidiaries in PRC participate in a government mandated, defined contribution plan, pursuant to which certain retirement, medical, housing and other welfare benefits are provided to employees. PRC labor laws require the entities incorporated in China to pay to the local labor bureau a monthly contribution calculated at a stated contribution rate on the compensation of qualified employees. The Group has no further commitments beyond its monthly contribution. Employee social benefits included as expenses in the accompanying consolidated statements of comprehensive income amounted to US$337,897, US$876,074 and US$1,008,337 for the years ended December 31, 2018, 2019 and 2020, respectively.
Income Taxes	( s Income Taxes Current income taxes are provided on the basis of income before income taxes for financial reporting purposes, and adjusted for income and expense items which are not assessable or deductible for income tax purposes, in accordance with the regulations of the relevant tax jurisdictions. Deferred income taxes are provided using the liability method. Under this method, deferred income tax assets and liabilities are recognized for the tax effects of temporary differences and are determined by applying enacted tax rates expected to apply to taxable income in the periods in which those temporary differences are expected to be recovered or settled. The effect on deferred income tax assets and liabilities of a change in tax rates or tax laws is recognized in the consolidated statements of comprehensive income in the period the change in tax rates or tax laws is enacted. A valuation allowance is provided to reduce the amount of deferred income tax assets if based on the weight of available evidence, it is more-likely-than-not The Group applies a “more likely than not” recognition threshold in the evaluation of uncertain tax positions. The Group recognizes the benefit of a tax position in its consolidated financial statements if the tax position is “more likely than not” to prevail based on the facts and technical merits of the position. Tax positions that meet the “more likely than not” recognition threshold are measured at the largest amount of tax benefit that has a greater than fifty percent likelihood of being realized upon settlement. Unrecognized tax benefits may be affected by changes in interpretation of laws, rulings of tax authorities, tax audits, and expiry of statutory limitations. In addition, changes in facts, circumstances and new information may require the Group to adjust the recognition and measurement estimates with regard to individual tax positions. Accordingly, unrecognized tax benefits are periodically reviewed and re-assessed. 2019 and
Operating Lease	( t Operating Lease The Group leases premises for offices under non-cancellable
Foreign Currency	( u Foreign Currency The Company’s reporting currency is United States Dollars (“US$”). The functional currency of the Company and its wholly-owned subsidiaries incorporated at Dubai, HK S.A.R. and British Virgin Islands is US$. The functional currency of the Company’s PRC subsidiaries is Chinese Renminbi (“RMB”). Transactions denominated in currencies other than the functional currency are remeasured into the functional currency at the exchange rates prevailing at the date of the transaction. Monetary assets and liabilities denominated in foreign currency are remeasured into the functional currency using the applicable exchange rate at the balance sheet date. The resulted exchange differences are recorded in general and administrative expenses in the consolidated statements of comprehensive income. The financial statements of the Company’s PRC subsidiaries are translated from RMB into US$. Assets and liabilities are translated into US$ using the applicable exchange rates at the balance sheet date. Equity accounts other than earnings or deficits generated in the current period are translated into US$ using the appropriate historical rates. Revenues, expenses, gains and losses are translated into US$ using the average exchange rates for the relevant period. The resulted foreign currency translation adjustments are recorded as a component of other comprehensive income or loss in the consolidated statements of comprehensive income, and the accumulated foreign currency translation adjustments are recorded as a component of accumulated other comprehensive income in the consolidated statement of shareholders’ equity (deficit).
Concentration and risk	( v Concentration and risk The Group’s cost of revenues mainly included commission fees paid to third party payment platforms, among which two third party payment platforms individually represent greater than 10% of the Group’s cost of revenues excluding payroll and welfare and depreciation for the years ended December 31, 2018, 2019 and 2020 are as follows: For the Year Ended December 31 2018 2019 2020 A 67 % 61 % 60 % B 19 % 14 % 19 %
Earnings (Loss) per Share	( w Earnings (Loss) per Share Basic earnings (loss) per share is computed by dividing net income (loss) attributable to ordinary shareholders, taking into consideration the deemed dividends to preferred shareholders (if any), by the weighted average number of ordinary shares outstanding during the year using the two-class two-class The Company’s redeemable convertible preferred shares are participating securities, as they have contractual nonforfeitable right to participate in distributions of earnings. The redeemable convertible preferred shares have no contractual obligation to fund or otherwise absorb the Group’s losses. Accordingly, any undistributed net income is allocated on a pro rata basis to ordinary shares and redeemable convertible preferred shares; whereas any undistributed net loss is allocated to ordinary shares only. Diluted earnings (loss) per share is calculated by dividing net earnings (loss) attributable to ordinary shareholders, as adjusted for the effect of dilutive ordinary equivalent shares, if any, by the weighted average number of ordinary and dilutive ordinary equivalent shares outstanding during the year. Ordinary equivalent shares consist of ordinary shares issuable upon the conversion of the preferred shares, using the if-converted
Segment Reporting	( x Segment Reporting The Group uses the management approach in determining its operating segments. The Group’s chief operating decision maker has been identified as the Chief Executive Officer, who reviews consolidated results when making decisions about allocating resources and assessing performance of the Group. For the purpose of internal reporting and management’s operation review, the Group’s Chief Executive Officer does not segregate the Group’s business by product or service lines. Management has determined that the Group has one operating segment, which is the social networking and entertainment platform.
Statutory Reserve	( y Statutory Reserve In accordance with the PRC Company Laws, the PRC subsidiaries must make appropriations from after-tax non-distributable after-tax registered capital of the PRC companies. Appropriation to the discretionary surplus fund is made at the discretion of the PRC companies. The statutory surplus fund and discretionary surplus fund are restricted for use. They may only be applied to offset losses or increase the registered capital of the respective companies. These reserves are not allowed to be transferred to the Company by way of cash dividends, loans or advances, nor can they be distributed except for liquidation. As of December 31, 2019 and 2020, the statutory reserve of the Company’s PRC subsidiaries was US$196,519 and US $424,682, respectively. UAE Company Laws requires 10% of Yalla Dubai’s annual net profits to be set aside as a statutory reserve. This allocation may be suspended by a shareholders’ decision once the reserve has reached an amount equal to 50% of the share capital of the company. As of December 31, 2019 and 2020, the statutory reserve of Yalla Dubai was , respectively
Deferred initial public offering costs	( z Deferred initial public offering costs Direct costs incurred by the Company attributable to its proposed initial public offering (“IPO”) of ordinary shares in the United States were deferred and recorded as other assets and were offset against the gross proceeds received from such offering.
Recent Accounting Pronouncements	( aa Recent Accounting Pronouncements In February 2016, the FASB issued Accounting Standards Updates (“ASU”) No. 2016-02, Leases Topic 842 2019-10, In June 2016, the FASB issued ASU 2016-13, Financial Instruments—Credit Losses (Topic 326) Measurement of Credit Losses on Financial Instruments 2016-13 2019-10. Financial Instruments—Credit Losses .

Description of Business and O_2

Description of Business and Organisation (Tables)	12 Months Ended
Description of Business and Organisation (Tables)	Dec. 31, 2020
Condensed Financial Information Disclosure [Abstract]
Schedule of Condensed Financial Statement	The following assets and liabilities of FYXTech BVI and Shenzhen Yale upon the completion of the Reorganization were treated as distribution to the shareholders at historical cost basis and were not included in the Company’s consolidated financial statements as of December 31, 2018. As of US$ ASSETS Current assets Cash and cash equivalents 7,601,027 Prepayments and other current assets 476,880 Total current assets 8,077,907 Non-current assets Property and equipment, net 1,771 Loans to shareholders 10,260,950 Total assets 18,340,628 LIABILITIES Current liabilities Accounts payable 33,832 Accrued expenses and other current liabilities 127,867 Total current liabilities 161,699 Total liabilities 161,699

Summary of Significant Accoun_3

Summary of Significant Accounting Policies (Tables)	12 Months Ended
Summary of Significant Accounting Policies (Tables)	Dec. 31, 2020
Accounting Policies [Abstract]
Schedule of Cash and Cash Equivalents are Deposited in Financial Institutions	The Company’s cash and cash equivalents are deposited in financial institutions at below locations: As of December 31, 2019 2020 US$ US$ Financial institutions in the mainland of the PRC —Denominated in RMB 486,117 5,511,982 —Denominated in USD 1,214,485 1,819,424 Total cash balances held at mainland PRC financial institutions 1,700,602 7,331,406 Financial institutions in Hong Kong Special Administrative Region (“HK S.A.R. “) —Denominated in USD 14,929,853 133,911,336 Total cash balances held at the HK S.A.R. financial institutions 14,929,853 133,911,336 Financial institutions in UAE —Denominated in United 6,059,127 23,249,640 —Denominated in USD 17,355,953 35,813,863 Total cash balances held at the UAE financial institutions 23,415,080 59,063,503 Financial institutions in United States —Denominated in USD 119,810 10,127,775 Total cash and cash equivalents 119,810 10,127,775 Financial institutions in Singapore —Denominated in USD 5,137,277 26,449,262 Total cash balances held at the Singapore financial institutions 5,137,277 26,449,262 Total cash and cash equivalents 45,302,622 236,883,282
Schedule of Useful Life of Property Plant and Equipment	Property and equipment are stated at cost less depreciation and any impairment. Property and equipment are depreciated using the straight-line method over the estimated useful lives of the assets, as follows: Category Estimated Useful Life Electronic equipment 3 years Vehicle 4 years Office furniture 5 years Leasehold improvement Shorter of the lease term or the estimated useful life of the assets
Schedules of Concentration of Risk by Risk Factor	The Group’s cost of revenues mainly included commission fees paid to third party payment platforms, among which two third party payment platforms individually represent greater than 10% of the Group’s cost of revenues excluding payroll and welfare and depreciation for the years ended December 31, 2018, 2019 and 2020 are as follows: For the Year Ended December 31 2018 2019 2020 A 67 % 61 % 60 % B 19 % 14 % 19 %

Short-Term Investments (Tables)

Short-Term Investments (Tables)	12 Months Ended
Short-Term Investments (Tables)	Dec. 31, 2020
Short-term Investments [Abstract]
Schedule of Short-term investments	Short-term investments consisted of the following: As of December 31, 2019 2020 US$ US$ Aggregate cost 1,493,411 766,295 Gross unrealized gain 13,574 — Aggregate fair value 1,506,985 766,295

Prepayments and Other Current_2

Prepayments and Other Current Assets (Tables)	12 Months Ended
Prepayments and Other Current Assets (Tables)	Dec. 31, 2020
Prepaid Expense and Other Assets, Current [Abstract]
Prepaid Expense And Other Assets Current	Prepayments and other current assets consisted of the following: As of December 31, 2019 2020 US$ US$ Amounts due from third party payment platforms 2,782,990 14,237,874 Others 1,147,316 1,487,550 Prepayments and Other Current Assets 3,930,306 15,725,424

Accrued Expenses and Other Cu_2

Accrued Expenses and Other Current Liabilities (Tables)	12 Months Ended
Accrued Expenses and Other Current Liabilities (Tables)	Dec. 31, 2020
Payables and Accruals [Abstract]
Schedule of Accrued Expenses and Other Current Liabilities	Accrued expenses and other current liabilities consist of the following: As of December 31, 2019 2020 US$ US$ Accrued payroll and welfare 651,470 4,656,854 Taxes payable 721,857 709,001 Others 203,203 782,631 Accrued Expenses and Other Current Liabilities 1,576,530 6,148,486

Mezzanine Equity (Tables)

Mezzanine Equity (Tables)	12 Months Ended
Mezzanine Equity (Tables)	Dec. 31, 2020
Temporary Equity Disclosure [Abstract]
Summary of Activities of Temporary Equity	The activities of Class A Preferred Equity, Class B Preferred Equity and Class C Preferred Equity for the year ended December 31, 2018 are as follows: Class A Class B Class C Total US$ US$ US$ US$ Balance as of January 1, 2018 300,000 218,233 772,382 1,290,615 Accretion — — 30,439 30,439 Repurchase (300,000 ) — (802,821 ) (1,102,821 ) Re-designation — (218,233 ) — (218,233 ) Balance as of December 31, 2018 — — — — All of the Redeemable Convertible Preferred Shares were converted to equivalent number of Class A Ordinary Shares immediately upon the completion of the Company’s initial public offering on September 30, 2020. The activities of Series Angel Preferred Shares, Series Pre-A Series Angel Series Pre-A Series A Total US$ US$ US$ US$ Balance as of January 1, 2019 234,394 3,570,201 20,157,863 23,962,458 Accretion 29,214 — 1,911,038 1,940,252 Balance as of December 31, 2019 263,608 3,570,201 22,068,901 25,902,710 Accretion 24,299 — 1,552,727 1,577,026 Conversion to ordinary shares (287,907 ) (3,570,201 ) (23,621,628 ) (27,479,736 ) Balance as of December 31, 2020 — — — —

Shares-Based Compensation (Tabl

Shares-Based Compensation (Tables)	12 Months Ended
Shares-Based Compensation (Tables)	Dec. 31, 2020
Share-based Payment Arrangement [Abstract]
Summary of Stock Options	A summary of the share options activities for the years ended December 31, 2020 is presented below Number of Weighted Weighted Aggregate US$ US$ Outstanding at January 1, 2020 26,733,506 0.19 8.50 100,101,256 Granted 15,116,000 0.35 Forfeited (136,000 ) 0.10 Outstanding at December 31, 2020 41,713,506 0.25 8.78 587,342,349 Vested and expect to be 41,713,506 0.25 8.78 587,342,349 Exercisable as of December 31, 202 0 8,669,543 0.19 8.16 122,626,494
Summary of Stock Option Pricing Model Assumption	The fair value of the options granted is estimated on the date of grant using the binomial option pricing model with the following key assumptions used: 2018 2019 2020 Risk-free rate of return (per annum) 2.9% 1.9%-2.0% 0.70% Volatility 57.10% 55%-56.2% 56.60% Expected dividend yield 0% 0% 0% Exercise multiple 2.2 2.2-2.8 2.2-2.8 Fair value of underlying ordinary share 0.35 3.02-3.94 5.12 Expected term 10 10 10

Income Tax (Tables)

Income Tax (Tables)	12 Months Ended
Income Tax (Tables)	Dec. 31, 2020
Income Tax Disclosure [Abstract]
Summary of Income Before Income Taxes	Income before income taxes were generated in the following jurisdictions: For the Year Ended December 31, 2018 2019 2020 US$ US$ US$ British Virgin Islands (B.V.I) 22,887,838 (382 ) (976 ) UAE (3,331,781 ) 27,663,586 63,056,081 PRC, excluding HK S.A.R. 845,644 2,142,160 (57,038,284 ) HK S.A.R. (619 ) (85,436 ) 65,233 Cayman Islands 103,904 (359,359 ) (2,007,587 ) Total 20,504,986 29,360,569 4,074,467
Summary of Income Tax Assets and Liabilities	Deferred income tax assets are as follows: As of December 31, 2019 2020 US$ US$ Deferred tax assets —Net operating loss carry forwards 40,859 3,334 Less: Valuation allowance (40,859 ) (3,334 ) Total deferred income tax asset s — —
Summary of Changes in Valuation Allowance	Changes in valuation allowance are as follows: As of December 31, 2019 2020 US$ US$ Balance at the beginning of the year 102 40,859 Additions 40,757 131 Reversals — (37,656) Balance at the end of the year 40,859 3,334

Earnings (Loss) Per Share (Tabl

Earnings (Loss) Per Share (Tables)	12 Months Ended
Earnings (Loss) Per Share (Tables)	Dec. 31, 2020
Earnings Per Share [Abstract]
Schedule of Earnings Per Share, Basic and Diluted	The following table sets forth the basic and diluted earnings (loss) per share computation and provides a reconciliation of the numerator and denominator for the periods presented. Shares issuable for little consideration relating to the vested share options have been included in the number of outstanding shares used for basic earnings per share: For the Year Ended December 31, 2018 2019 2020 US$ US$ US$ Numerator: Net Income 20,241,623 28,924,803 3,213,386 Deemed dividend to Class A Redeemable Convertible Preferred Equity Holder s (2,700,000 ) — — Deemed dividend to Class C Redeemable Convertible Preferred Equity Holder (3,781,363 ) — — Deemed dividend to Series Pre-A (3,570,201 ) — — Accretion of redeemable convertible preferred shares (1,127,052 ) (1,940,252 ) (1,577,026 ) Dividends distributed to redeemable convertible preferred shareholders — — (3,704,083 ) Distribution to the shareholders of FYXTech BVI and Shenzhen Yale in connection with the Reorganization (18,146,091 ) — — Earnings attributable to redeemable convertible preferred shareholders — (11,093,510 ) — Numerator for basic and diluted earnings (loss) per share calculation (9,083,084 ) 15,891,041 (2,067,723 ) Denominator: Weighted average number of ordinary shares 73,393,941 73,393,941 91,755,810 Denominator for basic and diluted earnings (loss) per share calculation 73,393,941 73,393,941 91,755,810 Earnings (loss) per ordinary share — Basic and diluted (0.12 ) 0.22 (0.02 )
Schedule of Antidilutive Securities Excluded from Computation	The potential dilutive securities that have not been included in the calculation of diluted /earnings (loss) per share as their inclusion would be anti-dilutive are as follow: For the Year Ended December 31, 2018 2019 2020 Redeemable convertible preferred shares 51,236,189 51,236,189 — Share options — — 35,764,660

Revenue Information (Tables)

Revenue Information (Tables)	12 Months Ended
Revenue Information (Tables)	Dec. 31, 2020
Revenue from Contract with Customer [Abstract]
Disaggregation of Revenue	Revenues consist of the following: For the Year Ended December 31, 2018 2019 2020 US$ US$ Revenues generated from group chatting services 42,371,174 63,437,224 122,978,167 Revenues generated from game services — 27,350 11,949,243 Total revenues 42,371,174 63,464,574 134,927,410

Commitments and Contingencies (

Commitments and Contingencies (Tables)	12 Months Ended
Commitments and Contingencies (Tables)	Dec. 31, 2020
Commitments and Contingencies Disclosure [Abstract]
Future Minimum Lease Commitments	As of December 31, 2020, future minimum lease commitments, all under office non-cancelable operating lease agreements, were as follows: Year ending December 31, Office 2021 852,434 2022 474,016 2023 202,676

Description of Business and O_3

Description of Business and Organisation - Schedule of Condensed Financial Statement (Detail) - USD ($)	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Current assets
Cash and cash equivalents	$ 236,883,282	$ 45,302,622	$ 17,016,700	$ 1,904,345
Prepayments and other current assets	15,725,424	3,930,306
Total current assets	253,375,001	53,462,854
Non-current assets
Property and equipment, net	1,241,756	453,923
Total assets	254,616,757	54,116,777
Current liabilities
Accounts payable	1,573,784	724,487
Accrued expenses and other current liabilities	6,148,486	1,576,530
Total current liabilities	21,082,097	8,311,891
Total liabilities	$ 21,082,097	$ 8,311,891
FYXTech BVI and Shenzhen Yale [Member]
Current assets
Cash and cash equivalents			7,601,027
Prepayments and other current assets			476,880
Total current assets			8,077,907
Non-current assets
Property and equipment, net			1,771
Loans to shareholders			10,260,950
Total assets			18,340,628
Current liabilities
Accounts payable			33,832
Accrued expenses and other current liabilities			127,867
Total current liabilities			161,699
Total liabilities			$ 161,699

Description of Business and O_4

Description of Business and Organisation - Additional Information (Detail) - shares shares in Millions	May 23, 2018	May 31, 2018	Mar. 31, 2018
Series Pre A Redeemable Convertible Preferred Shares [Member]
Business Acquisition [Line Items]
Percentage of Equity Interest Held	11.00%
Stock Issued for Services, Description	minimal consideration
Temporary Equity Stock Issued During Period Shares New Issues	10
Co Founders [Member]
Business Acquisition [Line Items]
Percentage of Equity Interest Held		74.00%
Investor [Member] \| Series Angel Redeemable Convertible Preferred Shares [Member]
Business Acquisition [Line Items]
Stock Issued for Services, Description	minimal consideration
Temporary Equity Stock Issued During Period Shares New Issues	5
Investor [Member] \| Class A Preferred Stock [Member]
Business Acquisition [Line Items]
Percentage of Equity Interest Held		12.00%	12.00%
Investor [Member] \| Class B Preferred Stock [Member]
Business Acquisition [Line Items]
Percentage of Equity Interest Held		4.00%
Investor [Member] \| Class C Preferred Stock [Member]
Business Acquisition [Line Items]
Percentage of Equity Interest Held		10.00%
Common Stock [Member] \| Co Founders [Member]
Business Acquisition [Line Items]
Stock Issued for Services, Shares	73

Summary of Significant Accoun_4

Summary of Significant Accounting Policies - Schedule of Cash and Cash Equivalents are Deposited in Financial Institutions (Detail) - USD ($)	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Cash and Cash Equivalents [Line Items]
Cash and cash equivalents	$ 236,883,282	$ 45,302,622	$ 17,016,700	$ 1,904,345
CN
Cash and Cash Equivalents [Line Items]
Cash and cash equivalents	7,331,406	1,700,602
CN \| RMB [Member]
Cash and Cash Equivalents [Line Items]
Cash and cash equivalents	5,511,982	486,117
CN \| USD [Member]
Cash and Cash Equivalents [Line Items]
Cash and cash equivalents	1,819,424	1,214,485
HK
Cash and Cash Equivalents [Line Items]
Cash and cash equivalents	133,911,336	14,929,853
HK \| USD [Member]
Cash and Cash Equivalents [Line Items]
Cash and cash equivalents	133,911,336	14,929,853
AE
Cash and Cash Equivalents [Line Items]
Cash and cash equivalents	59,063,503	23,415,080
AE \| USD [Member]
Cash and Cash Equivalents [Line Items]
Cash and cash equivalents	35,813,863	17,355,953
AE \| United Arab Emirates Dirham [Member]
Cash and Cash Equivalents [Line Items]
Cash and cash equivalents	23,249,640	6,059,127
US
Cash and Cash Equivalents [Line Items]
Cash and cash equivalents	10,127,775	119,810
US \| USD [Member]
Cash and Cash Equivalents [Line Items]
Cash and cash equivalents	10,127,775	119,810
SG
Cash and Cash Equivalents [Line Items]
Cash and cash equivalents	26,449,262	5,137,277
SG \| USD [Member]
Cash and Cash Equivalents [Line Items]
Cash and cash equivalents	$ 26,449,262	$ 5,137,277

Summary of Significant Accoun_5

Summary of Significant Accounting Policies - Schedule of Useful Life of Property Plant and Equipment (Detail)	12 Months Ended
	Dec. 31, 2020
Electronic equipment [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Useful Life	3 years
Vehicles [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Useful Life	4 years
Office furniture [member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Useful Life	5 years
Leasehold improvement [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Estimated Useful Lives	Shorter of the lease term or the estimated useful life of the assets

Summary of Significant Accoun_6

Summary of Significant Accounting Policies - Schedules of Concentration of Risk by Risk Factor (Detail) - Cost of Goods and Service Benchmark [Member] - Supplier Concentration Risk [Member]	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Third Party A [Member]
Concentration Risk [Line Items]
Concentration Risk, Percentage	60.00%	61.00%	67.00%
Third Party B [Member]
Concentration Risk [Line Items]
Concentration Risk, Percentage	19.00%	14.00%	19.00%

Summary of Significant Accoun_7

Summary of Significant Accounting Policies - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Jan. 01, 2020	Jan. 01, 2019	Jan. 01, 2018
Significant Of Accounting Policies [Line Items]
Deferred Revenue				$ 6,010,874	$ 3,439,418	$ 911,190
Revenue Recognition, Expected Timing of Satisfaction Period	1 year
Advertising Costs	$ 12,383,514	$ 7,541,366	$ 5,296,954
Employer Discretionary Contribution Amount	1,008,337	876,074	$ 337,897
Unrecognized Tax Benefits	$ 0	0
UAE
Significant Of Accounting Policies [Line Items]
Statutory Reserve Appropriation Percentage	10.00%
Statutory Reserve Appropriation Amount	$ 137,023	136,147
UAE \| Maximum [Member]
Significant Of Accounting Policies [Line Items]
Percentage Of Statutory Reserve To Registered Capital	50.00%
UAE \| Subsidiaries [Member]
Significant Of Accounting Policies [Line Items]
Value Added Tax Rate	5.00%
CN
Significant Of Accounting Policies [Line Items]
Statutory Reserve Appropriation Percentage	10.00%
Statutory Reserve Appropriation Amount	$ 424,682	$ 196,519
CN \| Maximum [Member]
Significant Of Accounting Policies [Line Items]
Percentage Of Statutory Reserve To Registered Capital	50.00%
CN \| Subsidiaries [Member]
Significant Of Accounting Policies [Line Items]
Value Added Tax Rate	6.00%

Short-term Investments - Schedu

Short-term Investments - Schedule of Short-term investments (Detail) - USD ($)	Dec. 31, 2020	Dec. 31, 2019
Short-term Investments [Abstract]
Aggregate cost	$ 766,295	$ 1,493,411
Gross unrealized gain		13,574
Aggregate fair value	$ 766,295	$ 1,506,985

Prepayments and Other Current_3

Prepayments and Other Current Assets - Schedule of Prepayments and Other Current Assets (Detail) - USD ($)	Dec. 31, 2020	Dec. 31, 2019
Prepaid Expense and Other Assets, Current [Abstract]
Amounts due from third party payment platforms	$ 14,237,874	$ 2,782,990
Others	1,487,550	1,147,316
Prepayments and Other Current Assets	$ 15,725,424	$ 3,930,306

Accrued Expenses and Other Cu_3

Accrued Expenses and Other Current Liabilities - Schedule of Accrued Expenses and Other Current Liabilities (Detail) - USD ($)	Dec. 31, 2020	Dec. 31, 2019
Payables and Accruals [Abstract]
Accrued payroll and welfare	$ 4,656,854	$ 651,470
Taxes payable	709,001	721,857
Others	782,631	203,203
Accrued Expenses and Other Current Liabilities	$ 6,148,486	$ 1,576,530

Ordinary Shares - Additional In

Ordinary Shares - Additional Information (Detail) - USD ($)	12 Months Ended
Ordinary Shares - Additional Information (Detail) - USD ($)	Dec. 31, 2020	Dec. 31, 2019	May 23, 2018	Feb. 07, 2018
Class of Stock [Line Items]
Ordinary shares, shares authorized		448,763,811		500,000,000
Ordinary shares, par or stated value per share		$ 0.0001		$ 0.0001
Proceeds from Initial Public Offering	$ 135,117,436
Ordinary shares, Conversion features	Each Class B Ordinary Share is convertible into one Class A Ordinary Share. Class A Ordinary Shares are not convertible into Class B Ordinary Shares under any circumstances.
Common Stock Shares Outstanding		73,393,941
Authorized share capital	$ 50,000	$ 50,000
Common Stock [Member]
Class of Stock [Line Items]
Ordinary shares, shares authorized				448,763,811
Preferred Stock [Member]
Class of Stock [Line Items]
Ordinary shares, shares authorized				51,236,189
IPO [Member]
Class of Stock [Line Items]
Ordinary shares, shares authorized	500,000,000	500,000,000
Common Class A [Member]
Class of Stock [Line Items]
Ordinary shares, shares authorized	400,000,000
Ordinary shares, par or stated value per share	$ 0.0001	$ 0.0001
Ordinary shares, Voting Rights Ordinary shares,Voting Rights	Each Class A Ordinary Share entitles the holder to one vote
Common Stock Shares Outstanding	119,196,117
Common Class A [Member] \| Over-Allotment Option [Member]
Class of Stock [Line Items]
Issue of shares	700,000
Common Class A [Member] \| IPO [Member]
Class of Stock [Line Items]
Issue of shares	18,600,000
Issue price per share	$ 7.5
Proceeds from Initial Public Offering	$ 135,117,436
Common Class B [Member]
Class of Stock [Line Items]
Ordinary shares, shares authorized	100,000,000
Ordinary shares, par or stated value per share	$ 0.0001	$ 0.0001
Ordinary shares, Voting Rights Ordinary shares,Voting Rights	each Class B Ordinary Share entitles the holder to twenty votes
Common Stock Shares Outstanding	24,734,013
Common Class B [Member] \| Yoo Yoo Limited [Member]
Class of Stock [Line Items]
Number of shares converted into Class B ordinary shares	24,734,013
Series Angel Redeemable Convertible Preferred Shares [Member]
Class of Stock [Line Items]
Convertible Preferred Shares, Outstanding	0	4,955,327
Convertible Preferred Shares, Par Value Per Share	$ 0.0001	$ 0.0001	$ 0.0001
Series Pre A Redeemable Convertible Preferred Shares [Member]
Class of Stock [Line Items]
Convertible Preferred Shares, Outstanding	0	9,917,226
Convertible Preferred Shares, Par Value Per Share	$ 0.0001	$ 0.0001
Series A Redeemable Convertible Preferred Shares [Member]
Class of Stock [Line Items]
Convertible Preferred Shares, Outstanding	0	36,363,636
Convertible Preferred Shares, Par Value Per Share	$ 0.0001	$ 0.0001

Mezzanine Equity - Summary of A

Mezzanine Equity - Summary of Activities of Temporary Equity (Detail) - USD ($)	May 31, 2018	Mar. 31, 2018	Feb. 28, 2018	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Temporary Equity [Line Items]
Beginning balance				$ 25,902,710	$ 23,962,458	$ 1,290,615
Accretion				1,577,026	1,940,252	30,439
Repurchase						(1,102,821)
Re-designation (see note below)						(218,233)
Conversion to ordinary shares				(27,479,736)
Ending balance					25,902,710	23,962,458
Class A Redeemable Convertible Preferred Shares [Member]
Temporary Equity [Line Items]
Beginning balance						300,000
Repurchase		$ (3,000,000)	$ (3,000,000)			(300,000)
Class B Redeemable Convertible Preferred Shares [Member]
Temporary Equity [Line Items]
Beginning balance						218,233
Re-designation (see note below)						(218,233)
Class C Redeemable Convertible Preferred Shares [Member]
Temporary Equity [Line Items]
Beginning balance						772,382
Accretion						30,439
Repurchase	$ (4,600,000)					(802,821)
Series Angel Redeemable Convertible Preferred Shares [Member]
Temporary Equity [Line Items]
Beginning balance				263,608	234,394
Accretion				24,299	29,214
Conversion to ordinary shares				(287,907)
Ending balance					263,608	234,394
Series Pre-A Redeemable Convertible Preferred Shares [Member]
Temporary Equity [Line Items]
Beginning balance				3,570,201	3,570,201
Accretion
Conversion to ordinary shares				(3,570,201)
Ending balance					3,570,201	3,570,201
Series A Redeemable Convertible Preferred Shares [Member]
Temporary Equity [Line Items]
Beginning balance				22,068,901	20,157,863
Accretion				1,552,727	1,911,038
Conversion to ordinary shares				(23,621,628)
Ending balance					$ 22,068,901	$ 20,157,863

Mezzanine Equity - Additional I

Mezzanine Equity - Additional Information (Detail) - USD ($)	Dec. 31, 2020	May 31, 2018	May 23, 2018	Mar. 31, 2018	Feb. 28, 2018	Dec. 31, 2020	Dec. 31, 2018	Dec. 31, 2019	Dec. 31, 2017	Jun. 30, 2017	Jan. 31, 2017	Sep. 30, 2016	Apr. 30, 2016
Temporary Equity [Line Items]
Mezzanine equity							$ 23,962,458	$ 25,902,710	$ 1,290,615
Redeemable preferred stock conversion ratio	1:1					1-to-1
Preferred stock repurchased value							1,102,821
Class A Redeemable Convertible Preferred Shares [Member]
Temporary Equity [Line Items]
Mezzanine equity									300,000			$ 300,000	$ 300,000
Preferred stock redemption rights percentage on purchase price	100.00%
Preferred stock repurchased value				$ 3,000,000	$ 3,000,000		300,000
Excess of the repurchase price over the carrying amount treated as deemed dividend				$ 2,700,000	$ 2,700,000
Class B Redeemable Convertible Preferred Shares [Member]
Temporary Equity [Line Items]
Mezzanine equity									218,233	$ 218,233	$ 218,233
Preferred stock redemption rights percentage on purchase price	100.00%
Class C Redeemable Convertible Preferred Shares [Member]
Temporary Equity [Line Items]
Mezzanine equity									$ 772,382	$ 726,195
Preferred stock redemption rights percentage on purchase price	100.00%					150.00%
Redeemable preferred stock redemption terms	Each holder of Class C Preferred Equity shall have the right to request FYXTech BVI and Shenzhen Yale to redeem Class C Preferred Equity held by such shareholder at the price of the original purchase price of such Class C Preferred Equity plus a simple interest rate of 15% per annum, and minus cumulative dividends that has been distributed on such Class C Preferred Equity if (1) FYXTech BVI or Shenzhen Yale fails to consummate an IPO within five (5) years after the closing date of the purchase of the Class C Preferred Equity, or (2) a material breach as defined in the agreement occurs.					a) Firstly, each holder of Class C Preferred Equity shall have the right to receive the higher of the following: (1) the fair market value multiplied by the share percentage of the Class C Preferred Equity that such holder holds in FYXTech BVI and Shenzhen Yale, (2) 150% of the original purchase price of such Class C Preferred Equity; or (3) the original purchase price of such Class C Preferred Equity plus the amount calculated at the compound interest rate of 15% per annum;
Redeemable preferred equity redemption interest rate	15.00%					15.00%
Preferred stock repurchased value		$ 4,600,000					802,821
Excess of the repurchase price over the carrying amount treated as deemed dividend		$ 3,781,363
Series Angel Redeemable Convertible Preferred Shares [Member]
Temporary Equity [Line Items]
Mezzanine equity							234,394	$ 263,608
Convertible preferred shares, issued	0		4,955,327			0		4,955,327
Convertible preferred shares, par value per share	$ 0.0001		$ 0.0001			$ 0.0001		$ 0.0001
Preferred stock redemption price per share		$ 0.0528
Series Angel Redeemable Convertible Preferred Shares [Member] \| Investor [Member]
Temporary Equity [Line Items]
Stock Issued for Services, Description			minimal consideration
Series Pre A Redeemable Convertible Preferred Shares [Member]
Temporary Equity [Line Items]
Mezzanine equity							3,570,201	$ 3,570,201
Percentage of Equity Interest Held			11.00%
Excess of the repurchase price over the carrying amount treated as deemed dividend							$ 3,570,201
Convertible preferred shares, issued	0					0		9,917,226
Convertible preferred shares, par value per share	$ 0.0001					$ 0.0001		$ 0.0001
Preferred stock redemption price per share		0.0753
Stock Issued for Services, Description			minimal consideration
Series A Preferred Stock [Member]
Temporary Equity [Line Items]
Preferred stock redemption price per share		$ 0.5500
Issuance cost			$ 922,589
Series A Preferred Stock [Member] \| Third Party Investor [Member]
Temporary Equity [Line Items]
Convertible preferred shares, issued			36,363,636
Convertible preferred shares, par value per share			$ 0.5500
Stock Issued for Services, Value		$ 20,000,000
Class A Preferred Stock [Member] \| Investor [Member]
Temporary Equity [Line Items]
Percentage of Equity Interest Held		12.00%		12.00%
Class B Preferred Stock [Member] \| Investor [Member]
Temporary Equity [Line Items]
Percentage of Equity Interest Held		4.00%
Class C Preferred Stock [Member] \| Investor [Member]
Temporary Equity [Line Items]
Percentage of Equity Interest Held		10.00%

Shares-Based Compensation - Sum

Shares-Based Compensation - Summary of Stock Options (Detail) - USD ($)	Dec. 31, 2020	Aug. 31, 2020	Jun. 28, 2020	Dec. 31, 2019	Jun. 30, 2019	Jun. 30, 2018	Dec. 31, 2020	Dec. 31, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares, Beginning							26,733,506
Number of shares, Granted		116,000	15,000,000	2,607,303	19,252,381	4,873,822	15,116,000
Number of shares, Forfeited							(136,000)
Number of shares, Ending	41,713,506			26,733,506			41,713,506	26,733,506
Number of shares, Vested and expect to be vested	41,713,506						41,713,506
Number of shares, Exercisable	8,669,543						8,669,543
Weighted average exercise price per share, Beginning							$ 0.19
Weighted average exercise price per share, Granted							0.35
Weighted average exercise price per share, Forfeited							0.10
Weighted average exercise price per share, Ending	$ 0.25			$ 0.19			0.25	$ 0.19
Weighted average exercise price, Vested and expect to be vested	0.25						0.25
Weighted average exercise price per share, Exercisable	$ 0.19						$ 0.19
Weighted remaining contractual years							8 years 9 months 10 days	8 years 6 months
Weighted remaining contractual years, Vested and expect to be vested							8 years 9 months 10 days
Weighted remaining contractual years, Exercisable	10 years						8 years 1 month 27 days
Aggregate intrinsic value	$ 587,342,349			$ 100,101,256			$ 587,342,349	$ 100,101,256
Aggregate intrinsic value, Vested and expect to be vested	587,342,349						587,342,349
Aggregate intrinsic value, Exercisable	$ 122,626,494						$ 122,626,494

Shares-Based Compensation - S_2

Shares-Based Compensation - Summary of Stock Option Pricing Model Assumption (Detail) - $ / shares	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Risk-free rate of return (per annum)	0.70%		2.90%
Volatility	56.60%		57.10%
Expected dividend yield	0.00%	0.00%	0.00%
Exercise multiple			$ 2.2
Fair value of underlying ordinary share	$ 5.12		$ 0.35
Expected term	10 years	10 years	10 years
Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Risk-free rate of return (per annum)		1.90%
Volatility		55.00%
Exercise multiple	$ 2.2	$ 2.2
Fair value of underlying ordinary share		$ 3.02
Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Risk-free rate of return (per annum)		2.00%
Volatility		56.20%
Exercise multiple	$ 2.8	$ 2.8
Fair value of underlying ordinary share		$ 3.94

Shares-Based Compensation - Add

Shares-Based Compensation - Additional Information (Detail) - USD ($)	Dec. 31, 2020	Aug. 31, 2020	Jun. 28, 2020	Dec. 31, 2019	Jun. 30, 2019	Dec. 31, 2018	Jun. 30, 2018	Jun. 22, 2018	Dec. 31, 2020	Jun. 16, 2020	Jun. 25, 2019
Share based options granted		116,000	15,000,000	2,607,303	19,252,381		4,873,822		15,116,000
Share based options award description	Stock options granted to employees will be exercisable upon the Company’s completion of IPO and shall be forfeited at the time the employee terminates of cause and breaches of the employees’ obligations, three months after termination of employment of the employee or twelve months after employee terminates of death or disability. The exercise price is US$0.10, US$0.18, US$0.22 or US$0.35 for these stock options granted
Share based options contractual terms	10 years								8 years 1 month 27 days
Weighted average grant date fair value of the share options	$ 4.78			$ 2.96		$ 0.26
Total unrecognized compensation expense	$ 76,830,482								$ 76,830,482
Weighted average period for un recognized compensation costs to be recognized									1 year 1 month 20 days
Cost Of Revenues [Member]
Share-based Payment Arrangement, Expense									$ 16,255,275
selling and marketing expenses [Member]
Share-based Payment Arrangement, Expense									7,672,437
General And Administrative Expenses [Member]
Share-based Payment Arrangement, Expense									35,861,913
Technology And Product Development Expenses [Member]
Share-based Payment Arrangement, Expense									1,015,858
IPO [Member]
Share-based Payment Arrangement, Expense									$ 46,458,472
Twenty Twenty equity incentive plan [Member]
Common stock reserved for future issuance	2,492,603								2,492,603
Percentage of Ordinary Shares issued and outstanding	2.00%								2.00%
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant	0								0
Share-based Compensation Arrangement by Share-based Payment Award, Percentage of Stock Option Vested	25.00%								25.00%
Share-based Compensation Arrangement by Share-based Payment Award Stock option plan period									4 years
Share Based Compensation Arrangement By Sharebased Payment Award Vesting Stock Options On Pro Rata Basis									36 months
Termination [Member]
Share based options termination period	3 months
Death Or Disability [Member]
Share based options termination period	12 months
Twenty Eighteen Share Incentive Plan [Member]
Common stock reserved for future issuance								11,733,506		15,000,000	15,000,000
Employee award vesting rights percentage								25.00%
Employee award vesting requisite service period								4 years
Share based compensation expense	$ 60,805,483

Income Tax - Summary of Income

Income Tax - Summary of Income Before Income Taxes (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Schedule of Income loss before income taxes by Jurisdiction [Line Items]
Income (loss) before income taxes	$ 4,074,467	$ 29,360,569	$ 20,504,986
British Virgin Islands (B.V.I)
Schedule of Income loss before income taxes by Jurisdiction [Line Items]
Income (loss) before income taxes	(976)	(382)	22,887,838
UAE
Schedule of Income loss before income taxes by Jurisdiction [Line Items]
Income (loss) before income taxes	63,056,081	27,663,586	(3,331,781)
PRC, excluding HK S.A.R.
Schedule of Income loss before income taxes by Jurisdiction [Line Items]
Income (loss) before income taxes	(57,038,284)	2,142,160	845,644
HK S.A.R.
Schedule of Income loss before income taxes by Jurisdiction [Line Items]
Income (loss) before income taxes	65,233	(85,436)	(619)
Cayman Islands
Schedule of Income loss before income taxes by Jurisdiction [Line Items]
Income (loss) before income taxes	$ (2,007,587)	$ (359,359)	$ 103,904

Income Tax - Summary of Incom_2

Income Tax - Summary of Income Tax Assets and Liabilities (Detail) - USD ($)	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Components of Deferred Tax Assets [Abstract]
—Net operating loss carry forwards	$ 3,334	$ 40,859
Less: Valuation allowance	(3,334)	$ (40,859)	$ (102)
Total deferred income tax assets

Income Tax - Summary of Changes

Income Tax - Summary of Changes in Valuation Allowance (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Income Tax Disclosure [Abstract]
Balance at the beginning of the year	$ 40,859	$ 102
Additions	131	40,757
Reversals	(37,656)
Balance at the end of the year	$ 3,334	$ 40,859

Income Tax - Additional Informa

Income Tax - Additional Information (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Inland Revenue, Hong Kong [Member]
Applicable tax rate	16.50%
Income before provision for income taxes	$ 0
Inland Revenue, Hong Kong [Member] \| Tax Year 2018 [Member]
Tax impact after increase in revenue	$ 2
Inland Revenue, Hong Kong [Member] \| Tax Year 2018 [Member] \| Maximum [Member]
Applicable tax rate	16.50%
Inland Revenue, Hong Kong [Member] \| Tax Year 2018 [Member] \| Minimum [Member]
Applicable tax rate	8.25%
State Administration of Taxation, China [Member]
Applicable tax rate	25.00%
Effective income tax rate	21.10%	1.50%	1.30%
State Administration of Taxation, China [Member] \| Domestic Tax Authority [Member]
Applicable tax rate	25.00%
State Administration of Taxation, China [Member] \| Foreign Tax Authority [Member]
Applicable tax rate	25.00%

Dividend To Shareholders - Addi

Dividend To Shareholders - Additional Information (Detail) - USD ($)	May 18, 2020	Dec. 31, 2020
Dividends [Abstract]
Ordinary shareholders, Dividend per share, Declared	$ 0.07
Dividend paid	$ 9,010,045	$ 9,010,045

Earnings (Loss) Per Share - Sch

Earnings (Loss) Per Share - Schedule of Earnings Per Share, Basic and Diluted (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Net Income	$ 3,213,386	$ 28,924,803	$ 20,241,623
Accretion of redeemable convertible preferred shares	(1,577,026)	(1,940,252)	(1,127,052)
Dividends distributed to redeemable convertible preferred shareholders	(3,704,083)
Distribution to the shareholders of FYXTech BVI and Shenzhen Yale in connection with the Reorganization			(18,146,091)
Numerator for basic and diluted earnings (loss) per share calculation	$ (2,067,723)	$ 15,891,041	$ (9,083,084)
Weighted average number of ordinary shares	91,755,810	73,393,941	73,393,941
Denominator for basic and diluted earnings (loss) per share calculation	91,755,810	73,393,941	73,393,941
—Basic and diluted	$ (0.02)	$ 0.22	$ (0.12)
Class A Redeemable Convertible Preferred Stock [Member]
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Deemed dividend			$ (2,700,000)
Class C Redeemable Convertible Preferred Stock [Member]
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Deemed dividend			(3,781,363)
Series Pre A Redeemable Convertible Preferred Shares [Member]
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Deemed dividend			$ (3,570,201)
Redeemable Convertible Preferred Stock [Member]
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Earnings attributable to redeemable convertible preferred shareholders		$ (11,093,510)

Earnings (Loss) Per Share - S_2

Earnings (Loss) Per Share - Schedule of Antidilutive Securities Excluded from Computation (Detail) - shares	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Share options [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Share options	35,764,660
Redeemable Convertible Preferred Stock [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Redeemable convertible preferred shares		51,236,189	51,236,189

Revenue Information - Disaggreg

Revenue Information - Disaggregation of Revenue (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Product Information [Line Items]
Revenues	$ 134,927,410	$ 63,464,574	$ 42,371,174
Group Chatting Services [Member]
Product Information [Line Items]
Revenues	122,978,167	63,437,224	42,371,174
Game Services [Member]
Product Information [Line Items]
Revenues	$ 11,949,243	$ 27,350	$ 0

Related Party Transactions - Ad

Related Party Transactions - Additional Information (Detail) - FYXTech BVI [Member] - USD ($)	Jul. 01, 2018	Dec. 31, 2018
Related Party Transaction [Line Items]
Line of credit, Amount borrowed	$ 12,000,000
Line of credit, Repayment Term	24 months
Line of credit		$ 10,260,950
Line of credit, Remaining amount outstanding		$ 10,260,950

Commitments and Contingencies -

Commitments and Contingencies - Future Minimum Lease Commitments (Detail)	Dec. 31, 2020USD ($)
Commitments and Contingencies Disclosure [Abstract]
2021	$ 852,434
2022	474,016
2023	$ 202,676

Commitments and Contingencies_2

Commitments and Contingencies - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Commitments and Contingencies Disclosure [Abstract]
Operating Leases, Rental Expense	$ 926,117	$ 567,548	$ 235,465