FreeOTP+

NOTE: Users reported issues with the backup & restore functionality, please test this whenever you install the app on a new device.

FreeOTP Plus forked the same functionality of FreeOTP provided by RedHat with the following enhancement:
* Export settings to Google Drive or other document providers
* Import settings from Google Drive or other document providers
* Lots of stability improvement
* Support Android 6.0 permissions
* Enhanced UI with material design with dark theme support
* Search bar to search token
* Provide more token details for better interoperatibility with other apps
* Utilize modern camera hardware to scan QR code faster
* Option to require Biometric / PIN authentication to launch the app
* Heuristic based offline icon for tokens of 250+ websites
* More settings to customize the app functionality

FreeOTP is a two-factor authentication (2FA) application for systems utilizing one-time password protocols (OTP).
Tokens can be added easily by scanning a QR-code or by manually entering in the token configuration.

FreeOTP implements open standards. This means that no proprietary server-side component is necessary: use any server-side component that implements these standards — for example FreeIPA, which uses TOTP.
Any standards-compliant implementation will work.
Currently, FreeOTP provides implementations of HOTP (RFC 4226) and TOTP (RFC 6238).