Proton Authenticator vs Step Two
| Proton Authenticator | Step Two | |
|---|---|---|
| Free plan | Yes | Yes |
| Free trial | No | No |
| Paid from | Free | Free |
| Open source | No | No |
| Platforms | Android, iOS, Linux, macOS, Windows | extension, iOS, macOS |
| Free plan | Yes | Yes |
| Code type | totp | totp |
| Encrypted backup | Yes | Yes |
| Multi-device sync | Yes | Yes |
| Supported platforms | iOS, Android, macOS, Windows, Linux | iOS, iPadOS, macOS, watchOS, Safari extension |
Both are listed in Best Authenticator Apps. On Everything Xiaomi, Proton Authenticator scores higher on our published basis.