Chronos Authenticator vs OpenOTP Authentication Server
| Chronos Authenticator | OpenOTP Authentication Server | |
|---|---|---|
| Free plan | Yes | Yes |
| Free trial | No | Yes |
| Paid from | Free | Free |
| Open source | No | No |
| Platforms | iOS | Android, api, iOS, Linux, macOS, self-hosted, Web, Windows |
| Free plan | Yes | Yes |
| Code type | totp and hotp | — |
| Encrypted backup | Yes | — |
| Multi-device sync | Yes | — |
| Supported platforms | iOS (iPhone) | — |
Both are listed in Best Authenticator Apps. On The Geeks Club, OpenOTP Authentication Server scores higher on our published basis.