Authenticator Pro is a free open-source two factor authentication app for Android. It supports TOTP (Time Based) and HOTP (Counter Based) authenticators using either SHA1, SHA256 or SHA512 hashing algorithms. Mobile-Otp (mOTP) and Steam are also supported.

Frequently Asked Questions

Contribution Guide

Backup File Format

Google Authenticator

Blizzard Authenticator

Steam

Authy

Please note, Authenticator Pro is currently only available on the IzzyOnDroid F-Droid repo (https://apt.izzysoft.de/fdroid/). You must first add this repository in the F-Droid client.

• Compatibility : Authenticator Pro is compatible with most providers and accounts.

• Backup / Restore : Backup your authenticators with strong encryption. In case you lose your or change phone, you can always gain access to your accounts. Save to cloud storage or to your device.

• Dark Mode : Authenticator Pro has a beautiful material design inspired look in either light or dark themes.

• Icons : Find your authenticators easily with recognisable brand logos and icons next to each code.

• Categories : Organise your authenticators into categories.

• Offline with few permissions : Authenticator Pro only requires a single permission and does not require Internet access to function.

• Customisation : Set icons and rename. You can also arrange your authenticators in any order you like so you can find them easily.

• Wear OS : Quickly view your authenticators directly from your watch. Please note that a connection to your Android device is required.

• Camera permission is required to add accounts through QR codes.