Authenticator Pro - Free open source two-factor authentication app for Android. Has encrypted backups, icons, categories and a high level of customization. There is also a companion app for Wear OS.

TOTP (time-based) and HOTP (counter-based) authenticators are supported, using SHA1, SHA256 or SHA512 hashing algorithms. Mobile-Otp (mOTP), Steam, and Yandex are also supported.

Two-factor authentication provides an additional layer of account security by requiring a one-time login code. In addition to a username and password, a code provided by Authenticator Pro is required. So even if your login credentials are compromised, your account remains secure.

Features

• ⚙️ Compatibility: Authenticator Pro is compatible with most ISPs and accounts.
• 📲Import: Easily transfer accounts to Authenticator Pro from supported alternative applications.
• 💾 Backup/Restore: Authenticator backup with strong encryption. If you lose or change your phone, you can always access your accounts. Backups can be saved to cloud storage or on your device.
• 🌙 Dark Mode: Authenticator Pro has a beautiful appearance created in material design style, in light or dark themes.
• ⏺️ Icons: Easily find your authenticators with recognizable brand logos and icons next to each code.
• 📂 Categories: Organize your authenticators by category.
• 🔒 Autonomy with few permissions: Authenticator Pro requires only one permission¹ and does not need internet access.
• 🔑 Security: Set a password and use biometric authentication to protect your codes.
• 🎨 Personalization: Set icons and renaming. You can also arrange the authenticators in any order so they are easy to find.
• ⌚ Wear OS: Quickly view authenticators right from your watch. Note that a connection to an Android device is required. Also, distributions of the F-Droid app are not compatible with Wear OS as proprietary dependencies are required.

The app requires camera resolution to scan QR codes.

Authenticator Pro is currently only available in the F-Droid client via the IzzyOnDroid repository. You must first add this repository to the F-Droid client.