Proton Authenticator & 2FA

Proton AG

About this app

Proton Authenticator is a free, private 2FA authenticator app that generates secure one-time passwords (OTP) on all your devices, even offline. Add multi-factor authentication (MFA) to your online accounts in seconds. From the creators of Proton Mail, Proton VPN, Proton Drive, and Proton Pass.

Open-source, end-to-end encrypted, and protected by Swiss privacy laws, Proton Authenticator is the safest way to generate and store your 2FA codes and TOTP tokens.

WHY CHOOSE PROTON AUTHENTICATOR?

Free authenticator app: no Proton account required, no ads

Works offline: generate OTP codes on mobile and desktop without a connection

Encrypted sync: keep your 2FA codes on all your devices with end-to-end encryption

Automatic backups: never lose access to your MFA-protected accounts

Easy import and export: move your OTP tokens from other 2FA apps in a few taps, or export them anytime

App lock: secure your authenticator app with biometrics or a PIN code

Open source: transparent, verifiable code

Swiss privacy: protected by Switzerland's privacy laws

Trusted by millions. Built by Proton.

Secure every login with a private 2FA authenticator app. Download Proton Authenticator today.

Ratings and reviews

I like the simplicity of it. I like that you can force syncing with scroll to refresh. But there are a few things I wish you'd consider. First, it always locks when you quit. Maybe add a lock timer like Proton Pass? And second, it doesn't support any locking methods other than Biometric (like PIN or pattern). And finally, it may be a good idea to hide the Proton account in settings with asterisks (*) and only show a few of the first and last letters.

Excellent replacement for Google's Authenticator, especially since you can create a free account and run the Windows version on your PC and have all the codes synced. That's a massive win for somebody who leaves their phone in the other room all the time, and just wants to log into their bank or whatever website that needs an authentication code. All I have to do is open up the PC version and there it is, instead of getting up and finding my phone. Excellent and perfectly serves my needs!

After scanning a qr code the app silently adds the new account without any feedback. You have to scroll through your accounts to find the new one unless you order them by when you added them. The app should auto scroll to the new account and highlight it. Having no feedback makes it seem like it failed to add an account. Otherwise app is incredible.

What’s new

- Target Android 16