| Document And Entity Information | Nov. 06, 2023 |
| Document Information Line Items | |
| Entity Registrant Name | COYNI, INC. |
| Trading Symbol | N/A |
| Document Type | 8-K |
| Amendment Flag | false |
| Entity Central Index Key | 0000768216 |
| Document Period End Date | Nov. 06, 2023 |
| Entity Emerging Growth Company | true |
| Entity Ex Transition Period | true |
| Entity Incorporation, State or Country Code | NV |
| Entity File Number | 000-22711 |
| Entity Tax Identification Number | 76-0640970 |
| Entity Address, Address Line One | 3131 Camino Del Rio N, Suite 1400 |
| Entity Address, City or Town | San Diego |
| Entity Address, State or Province | CA |
| Entity Address, Postal Zip Code | 92108 |
| City Area Code | (855) |
| Local Phone Number | 201-1613 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Title of 12(b) Security | N/A |
| Security Exchange Name | NONE |
