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Stratum

A free open-source two factor authentication app for Android. It features encrypted backups, icons, categories and a high level of customisation. It also has a Wear OS companion app.

It supports TOTP (Time Based) and HOTP (Counter Based) authenticators using either SHA1, SHA256 or SHA512 hashing algorithms. Mobile-Otp (mOTP), Steam and Yandex are also supported.

Download ⬇️

Get it on Google Play Get it on F-Droid

Stratum is currently only available on the F-Droid client through the IzzyOnDroid repo. You must first add this repository in the F-Droid client.

Support development ❀️

Buy Me a Coffee

Quick Links πŸ”—

Request Icons

Frequently Asked Questions

Contribution Guide

Backup File Format

Importing from other apps:

Google Authenticator

Blizzard Authenticator

Steam

Authy

Features πŸͺ„

βš™οΈ Compatibility: Stratum is compatible with most providers and accounts.

πŸ’Ύ 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.

πŸŒ™ Dark Mode: Stratum 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.

πŸ“‚ Categories: Organise your authenticators into categories.

πŸ”’ Offline with few permissions: Stratum 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.

Screenshots πŸ“±

Screenshot 1 Screenshot 2 Screenshot 3 Screenshot 4 Screenshot 5 Screenshot 6 Screenshot 7 Screenshot 8

Wear OS Companion

Screenshot 1 Screenshot 2 Screenshot 3 Screenshot 4 Screenshot 5

Permissions πŸ”’

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

Disclaimer

This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.