Proton Authenticator
Protect your accounts with Proton Authenticator, a private and secure cross-device two-factor authentication (2FA) that works offline. Created by Proton, the creators of Proton Mail, Proton VPN, Proton Drive, and Proton Pass.
Cost / License
- Free
- Open Source
Application type
Platforms
- Mac
- Windows
- Linux
- Android
- iPhone
- Android Tablet
- iPad
- F-Droid
Features
Properties
- Privacy focused
- Lightweight
Features
- No registration required
- Biometric Authentication
- Ad-free
- Works Offline
- Dark Mode
- FIDO U2F (2FA) support
- Cloud Sync
- Automatic Backup
- No Tracking
- End-to-End Encryption
- Two-factor Authentication
- AES-256 Encryption
- Time-based One-time Password
- Cross-Platform
Tags
- Backup
- Authentication
- proton
- two-factor-authenticator
- Security & Privacy
- 2fa-client
Proton Authenticator News & Activities
Recent News
- Fla published news article about Proton Authenticator
Proton Authenticator launches on F-Droid with version 1.3.4Proton Authenticator is now available on F-Droid as of Version 1.3.4, expanding access beyond Googl...
- Maoholguin published news article about Proton Authenticator
Proton launches new free open-source Authenticator with E2E encryption on all platformsProton has launched Proton Authenticator, a new open source two-factor authentication app with priv...
Recent activities
- android037 reviewed Proton Authenticator
Not as good as Ente yet but they've worked out all the major issues since first launch and now I use this as backup. It's easily the 2nd best behind Ente and the only other TOTP authenticator I recommend.
- ursamajor737 liked Proton Authenticator
- EmilE1337 updated Proton Authenticator
- RoaringKitty liked Proton Authenticator
authn8 added Proton Authenticator as alternative to Authn8- nohirot154 liked Proton Authenticator
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What is Proton Authenticator?
Protect your accounts with Proton Authenticator, a private and secure cross-device two-factor authentication (2FA) that works offline. Created by Proton, the creators of Proton Mail, Proton VPN, Proton Drive, and Proton Pass.
Proton Authenticator is open-source, end-to-end encrypted, and backed by Swiss privacy laws. It’s the safest way to generate and store your one-time passwords (TOTP) for 2FA Login.
Why Proton Authenticator?
- Free to use: No Proton account required, ad-free.
- Offline support, on mobile and desktop apps
- Sync your 2FA codes to all your devices with end-to-end encryption.
- Enable automatic backups for peace of mind
- Easily import from other 2FA apps, or export from Proton Authenticator.
- Protect your account with biometrics or a PIN code.
- Open-source transparency, verifiable code.
- Protected by Switzerland’s privacy laws.
Trusted by millions. Built by Proton.









Comments and Reviews
I'm truly honored to be using this app right from version 1.0.0, mere hours after it was announced on the site. The sync feature with my Proton account is a game-changer. UI/UX-wise, it's as smooth as Proton's other offerings. That said, the icon selection is limited and non-customizable at the moment. Still, it meets my needs perfectly for a v1 release, working great on both desktop and mobile. I've tried tons of auth apps in the past—Google Authenticator, Microsoft Authenticator, Ente Auth, 2FAS, Aegis, you name it—but I'm switching to Proton full-time, with Ente as my backup plan.
Not as good as Ente yet but they've worked out all the major issues since first launch and now I use this as backup. It's easily the 2nd best behind Ente and the only other TOTP authenticator I recommend.
I like proton authentificator because its the only authentificator that also runs on windows and where i can sync the codes encrypted between my phone and laptop. And its pretty basic