andOTP - OTP Authenticator 0.9.0-play

andOTP is currently unmaintained, please check GitHub for additional details.

andOTP implements Time-based One-time Passwords (TOTP) as specified in RFC 6238 (HOTP support is currently in beta testing). Simply scan the QR code and login with the generated 6-digit code.

Features:

• Free and Open-Source
• Requires minimal permissions:
  • Camera access for QR code scanning
  • Storage access for import and export of the database
• Encrypted storage with two backends:
  • Android KeyStore (should be used only when necessary)
  • Password / PIN
• Multiple backup options:
  • Plain-text
  • Password-protected
  • OpenPGP-encrypted
• Sleek minimalistic Material Design with three different themes:
  • Light
  • Dark
  • Black (for OLED screens)
• Great Usability
• Compatible with Google Authenticator

Backups:
To keep your account information secure, andOTP only stores it in encrypted data files. There are two encryption methods available: using the Android KeyStore or a Password / PIN.

The KeyStore is a system component of Android for securely storing cryptographic keys. While it offers advantages, such as hardware cryptography support, it may cause issues with third-party backup applications like Titanium Backup. In such cases, relying on internal backup functions provided by andOTP is necessary.

The KeyStore can present challenges; therefore, it is advisable to use it only when essential and with caution. Regular backups are recommended if this method is utilized. A password or PIN is always a recommended alternative.

Beta testing:
If you encounter a bug during beta testing, please provide feedback directly on Github (GitHub Repo Link) as notifications may not always be received via the Google Play Store.

Open source:
This app is entirely open source, licensed under the MIT license. The source code can be accessed on GitHub: GitHub Repository for andOTP app.

andOTP is a fork of the original OTP Authenticator app developed by Bruno Bierbaumer, which has been inactive for some time. Credit for the original version goes to Bruno. Although it has been removed from Google Play, the code of the app is still available here: Original OTP Authenticator app repository by Bruno.