Proton Authenticator vs Zero-TOTP
| Proton Authenticator | Zero-TOTP | |
|---|---|---|
| Free plan | Yes | No |
| Free trial | No | No |
| Paid from | Free | — |
| Open source | No | No |
| Platforms | Android, iOS, Linux, macOS, Windows | iOS, self-hosted, Web |
| Free plan | Yes | Yes |
| Code type | totp | totp |
| Encrypted backup | Yes | Yes |
| Multi-device sync | Yes | — |
| Supported platforms | iOS, Android, macOS, Windows, Linux | Web app; self-hosted web app; iOS and CLI apps are not currently in development |
| Push approvals | — | No |
| Team administration | — | No |
Both are listed in Best Authenticator Apps. On Everything Xiaomi, Proton Authenticator scores higher on our published basis.