Material Carrot is a fork of the Potato mOTP client for Android. You can find the original project here: https://github.com/markusberg/potato_client
Google Play Store: https://play.google.com/store/apps/details?id=xyz.santtu.materialcarrot
Github releases coming soon™...
Credits to Markus Berg, the original developer Potato client. http://kelvin.nu/software/potato http://motp.sf.net/