OpenUntis
Fork of SapuSeven.
An alternative FLOSS Android client for the Untis timetable system.
Anti Features
webuntis.com, non-free network service
Installation
If there are release builds available, you can download them from the release page. Alternatively, you can build the app yourself.
Others
Feel free to submit issues or pull requests!
Original Author: SapuSeven
FLOSS maintainer: Perflyst