2FAGuard vs Proton Authenticator
2FAGuard
2faguard.app
Proton Authenticator
proton.meSide by side
| Figure | 2FAGuard | Proton Authenticator |
|---|---|---|
| Price from | Free | Free |
| Free plan | Yes | Yes |
| Free trial | — | — |
| Open source | — | — |
| Windows | Yes | Yes |
| macOS | — | Yes |
| Linux | — | Yes |
| iOS | — | Yes |
| Android | — | Yes |
| Plans published | 1 | 2 |
| Spec score · Authenticator apps | 7.5 (#93) | 8.8 (#9) |
| Code type | totp | totp |
| Encrypted backup | Yes | Yes |
| Free plan | Yes | Yes |
| Headquarters | Wesel, Germany | Plan-les-Ouates, Geneva, Switzerland |
| Maker | The imprint identifies Timo Kössler as the responsible person and lists Wesel, Germany as the address location. | Proton AG operates Proton services as a Swiss corporation and says Proton was launched in 2014. |
| Open source | The app is free and open source under the MIT License. | Proton Authenticator is open source, and Proton says anyone can inspect its code. |
| Purpose | 2FAGuard is a Windows app for managing two-factor authentication codes. | Proton Authenticator generates time-based, one-time 2FA codes on your device for an extra layer of account login security. |
| Security | The maker says app data is encrypted and stored on the device; its repository specifies AEGIS-256 encryption with a key derived via Argon2id. | Proton says that synced data is end-to-end encrypted and that its servers never access the unencrypted data. |
| Support | The maker provides a GitHub issue tracker and the email address [email protected] for contact. | The product page links to Proton product support. |
| Supported platforms | Windows | iOS,Android,macOS,Windows,Linux |
Plans
In their own words
Proton Authenticator
Proton Authenticator generates time-based one-time codes for two-factor authentication, adding a code at login to help secure accounts. It can display codes without an internet connection, and a Proton Account is not required to use it. Signing in is optional and enables code syncing across devices. Users can import codes from Google Authenticator, 2FAS, Aegis Authenticator, Bitwarden Authenticator, Ente Auth, and LastPass Authenticator, then export their codes from the app. Backups can be stored locally or in the cloud, with end-to-end encrypted sync between devices. Proton says its servers cannot access synced data in unencrypted form; when sync is on, entries are protected with 256-bit AES-GCM. The app is open source, and its vault can be unlocked with face or fingerprint recognition. It is available for Android, iOS, Linux, macOS, and Windows; Android is also available through F-Droid. Proton Authenticator is free on all listed platforms, with no ads or tracking.