Proton Authenticator

Download Proton Authenticator APK

proton.android.authenticator · by Proton AG

Latest Version: 1.3.1 • Updated: Dec 23, 2025

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.

Frequently Asked Questions

Yes. Every Proton Authenticator APK on APK.now is automatically scanned and the cryptographic signature is verified against the original publisher's certificate (Proton AG). Files that fail verification are removed before they ever reach the catalog.

Enable 'Install from unknown sources' for your browser (or the file manager you use to open the APK) under Settings → Apps → Special access. Tap the downloaded Proton Authenticator APK, confirm the prompts, and Android installs it just like any app from the Play Store.

The latest Proton Authenticator version available on APK.now is 1.3.1. We track new releases from Proton AG continuously and add them to the catalog as soon as they pass verification.

Yes — every Proton Authenticator APK and every version on APK.now is free to download. We never gate downloads behind sign-up, surveys, or paywalls.

APK.now keeps a full archive of every Proton Authenticator release, including older versions that the Play Store has already replaced. The APKs work on devices without Google Play Services (Huawei, GrapheneOS, Amazon Fire) and are signature-verified so you can be confident the file is genuine.