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 trusted by millions, it gives you complete control over your authentication data without requiring a Proton account. The app supports effortless migration from Google Authenticator, Authy, and other authenticators, includes secure backup and export options, and operates offline on both mobile and desktop. Protected by Swiss privacy laws with no tracking or ads, Proton Authenticator combines strong encryption with transparent, auditable code.
Highlights
- End-to-end encrypted 2FA codes stored entirely on your device
- Import from Google Authenticator, Authy, and other authenticator apps
- Secure backup and export with full user control over data
- Open source code with no tracking, ads, or account requirement
- Offline support on mobile and desktop applications
Best for
Anyone securing personal or work accounts who wants full control over their two-factor authentication codes without relying on cloud storage or third-party servers. Particularly suited for privacy-conscious users and those migrating from mainstream authenticator apps.
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 includes no tracking or ads.
- Can I import codes from other authenticator apps?
- Yes. Proton Authenticator supports effortless migration from Google Authenticator, Authy, and other authenticator apps in seconds.
- Does Proton Authenticator work offline?
- Yes. The app supports offline use on both mobile and desktop, so your 2FA codes remain accessible without an internet connection.
- Can I back up and restore my 2FA codes?
- Yes. Proton Authenticator includes secure backup and export options, giving you full control over your data and the ability to restore codes when 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.
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