Proton Authenticator
Proton AG
About
Proton Authenticator is an open-source, end-to-end encrypted two-factor authentication app that stores your 2FA codes entirely on your device. Built by Proton Mail and protected by Swiss privacy laws, it offers local-first storage with no tracking or ads. You can easily import codes from Google Authenticator, Authy, or other apps, and back up or export your data with full control. The app works offline on mobile and desktop, requires no Proton account, and is free to use.
Highlights
- End-to-end encrypted 2FA codes stored entirely on your device
- Import codes from Google Authenticator, Authy, and other apps
- Open source code with no tracking or ads
- Works offline on mobile and desktop
- Secure backup and export with full user control
- Protected by Swiss data protection regulations
Best for
Anyone securing personal or work accounts who wants two-factor authentication codes stored locally on their device without relying on cloud services or third-party servers.
At a glance
Proton Authenticator is rated 4.1 out of 5 from 70 ratings and is available on iOS, Android, Windows, macOS, and Linux — all free to download.
It is developed by Proton AG.
Screenshots
Frequently Asked Questions
- Is Proton Authenticator free?
- Yes — Proton Authenticator is free to download on iOS, Android, Windows, macOS, and Linux.
- What platforms is Proton Authenticator available on?
- Proton Authenticator is available on iOS, Android, Windows, macOS, and Linux.
- What is Proton Authenticator?
- Proton Authenticator is an open-source, end-to-end encrypted two-factor authentication app that stores your 2FA codes locally on your device. Built by Proton Mail and protected by Swiss privacy laws, it requires no account and is free to use.
- Can I import codes from other authenticator apps?
- Yes, you can migrate your 2FA codes from Google Authenticator, Authy, or any other authenticator app in seconds.
- Does Proton Authenticator work offline?
- Yes, the app supports offline use on both mobile and desktop, so you can access your 2FA codes without an internet connection.
- Can I back up my 2FA codes?
- Yes, Proton Authenticator provides secure backup and export options, giving you full control over your data and the ability to restore it whenever needed.
- What are the alternatives to Proton Authenticator?
- Proton Authenticator is similar to Ente Auth - 2FA Authenticator, Proton Pass - Password Manager, Raivo - 2FA Authenticator app, and Aegis Authenticator - 2FA App. Browse related apps by tag: open source, 2fa, password manager, and encryption.
Similar Apps
Ente Auth is a 2FA authenticator that generates and stores two-factor verification tokens with end-to-end encrypted cloud backups. Your 2FA codes sync automatically across all your mobile and desktop
Proton Pass is a free, open-source password manager with end-to-end encryption and no ads or data collection. Store unlimited passwords on unlimited devices, autofill logins, generate 2FA codes, creat
Raivo is a two-factor authentication app for iPhone and Mac that stores and generates one-time passwords with end-to-end encrypted iCloud backup and sync. Open the app with Face ID or Touch ID, copy y
Aegis Authenticator is a free, open source app for managing two-factor authentication tokens across your online accounts. It stores all one-time passwords in an encrypted vault that can be unlocked wi
Stratum is an open-source two-factor authentication app for Android that adds an extra security layer to your accounts by requiring a one-time code at login. It supports TOTP and HOTP authenticators w