Proton Authenticator
Proton's standalone 2FA app, free and open source. End-to-end encrypted, available on all platforms.
Description
Proton Authenticator is a standalone 2FA app launched in July 2025. Unlike the 2FA built into Proton Pass, it stores your TOTP codes in a separate, end-to-end encrypted app. No Proton account needed. Cross-platform (iOS, Android, Windows, Mac, Linux), open source, easy import from Google Authenticator or Aegis. Separating passwords from 2FA codes adds an extra security layer.
Strengths
- Integrated with Proton account for seamless sync
- End-to-end encrypted backups
- Clean interface consistent with Proton apps
Limitations
- Requires a Proton account
- Newer product, less community feedback
Recommended for
- Existing Proton users wanting integrated 2FA
- Users wanting encrypted 2FA backup in the cloud
Compared to alternatives
The logical choice if you already use Proton Pass and want to separate passwords from 2FA codes. Free, cross-platform, no Proton account needed.