Proton Authenticator

Proton AG

About this app

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.

Ratings and reviews

The import facility doesn't work but otherwise this is the perfect alternative to Bitwarden Authentication, being synced across multiple platforms means that I'm not in a mess if my phone doesn't work. Thank you for this.

No QR code share. No icons for entries. No notes. No grouping. No sorting. Limited types of OTPs. App closes when app switching (it becomes fullscreen then closes without prompting fingerprint). +1 for full data export, fancy animations

really would like to use this app but unfortunately the import does not work as they want a picture of the exported QR code and I don't know of a single authenticator app that allows you to take a screenshot of that QR code, certainly Google authenticator doesn't. also all crashes every time I try to enable app lock biometric. very unfortunate as I really like proton as a company and use their other offerings a lot.

What’s new

First Proton authenticator release