Proton Authenticator
Productivity
Secure, free, end-to-end encrypted, open source, and available on every device
- Rating
- 4.8
- 16.3K ratings
- Downloads
- 571K+
- on Google Play
- Price
- Free
- No in-app purchases
- Updated
- Jul 24
- 2026 · v1.3.10
Screenshots
About 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.
Take control of your digital security today.
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.
Take control of your digital security today.
What’s new
Version 1.3.10 · Updated July 24, 2026
- Target Android 16
User reviews
Perfect alternative to Google Authenticator, plus Desktop support
Works well
simple and easy to use
Really good authenticator. The only issue is on my phone Xperia Xa2 plus, the app crashes when I set unlock with biometric.
I was in the process of trying to find a replacement for Google Auth and failing to find something of equal quality and features. Then Proton released this. Of all authenticators I tried this one is by far the best including Google.
Installed yesterday. So far so good. I love that there is a desktop app too. I just don't like the design so much. It doesn't match the design of the other Proton Apps. But I'm very happy to finally leave the Google Authenticator and switch to Proton. Keep up the good work Proton 🙏❤️
Alternatives to Proton Authenticator
Looking for apps like Proton Authenticator? Here are 6 similar Android apps on Google Play. The highest rated is Proton Pass: Password Manager (4.8/5), and all 6 are free to download.
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VPN Proton: Fast & Secure VPN 4.7
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Proton Mail: Encrypted Email 4.6
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Proton Pass: Password Manager 4.8
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Proton Drive: Cloud Storage 3.9
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Proton Calendar: Secure Events 4.0
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Lumo by Proton 3.8
| App | Rating | Price | Installs | Last updated | Compare |
|---|---|---|---|---|---|
| Proton Authenticator | 4.8 / 5 | Free | 500,000+ | Jul 24, 2026 | |
| VPN Proton: Fast & Secure VPN | 4.7 / 5 | Free | 100,000,000+ | Oct 29, 2026 | Compare |
| Proton Mail: Encrypted Email | 4.6 / 5 | Free | 10,000,000+ | Oct 30, 2026 | Compare |
| Proton Pass: Password Manager | 4.8 / 5 | Free | 1,000,000+ | Oct 21, 2026 | Compare |
| Proton Drive: Cloud Storage | 3.9 / 5 | Free | 1,000,000+ | Sep 28, 2026 | Compare |
| Proton Calendar: Secure Events | 4.0 / 5 | Free | 1,000,000+ | Sep 29, 2026 | Compare |
| Lumo by Proton | 3.8 / 5 | Free | 100,000+ | – | Compare |