4OTP vs Proton Authenticator
| 4OTP | Proton Authenticator | |
|---|---|---|
| Free plan | Yes | Yes |
| Free trial | No | No |
| Paid from | $3/mo | Free |
| Open source | No | No |
| Platforms | Android, iOS, macOS, Windows | Android, iOS, Linux, macOS, Windows |
| Free plan | Yes | Yes |
| Code type | totp | totp |
| Encrypted backup | Yes | Yes |
| Multi-device sync | Yes | Yes |
| Supported platforms | Windows, macOS, iOS, Android | iOS, Android, macOS, Windows, Linux |
Both are listed in Best Authenticator Apps. On Samsung Mobile US Press, Proton Authenticator scores higher on our published basis.