| Document and Entity Information | Apr. 20, 2021 |
| Cover [Abstract] | |
| Entity Registrant Name | Applovin Corp |
| Amendment Flag | true |
| Entity Central Index Key | 0001751008 |
| Document Type | 8-K/A |
| Document Period End Date | Apr. 20, 2021 |
| Entity Incorporation State Country Code | DE |
| Entity File Number | 001-40325 |
| Entity Tax Identification Number | 45-3264542 |
| Entity Address, Address Line One | 1100 Page Mill Road |
| Entity Address, City or Town | Palo Alto |
| Entity Address, State or Province | CA |
| Entity Address, Postal Zip Code | 94304 |
| City Area Code | (800) |
| Local Phone Number | 839-9646 |
| Written Communications | false |
| Soliciting Material | false |
| Pre Commencement Tender Offer | false |
| Pre Commencement Issuer Tender Offer | false |
| Security 12b Title | Class A common stock, par value $0.00003 per share |
| Trading Symbol | APP |
| Security Exchange Name | NASDAQ |
| Entity Emerging Growth Company | false |
| Amendment Description | This Amendment No. 1 on Form 8-K/A is being filed to amend Item 9.01(a) and (b) of the Current Report on Form 8-K that the Company filed with the Securities and Exchange Commission (“SEC”) on April 23, 2021, regarding the completion of its acquisition of Adjust to include the historical financial statements of Adjust required by Item 9.01(a) of Form 8-K and the pro forma financial information required by Item 9.01(b) of Form 8-K. |
