The "uhrzeitenapp.apk" is a installable Android App using the old logic and GUI from before this repository existed.
The logic(python code) and the GUI will be further updated.
The updated logic is found in the "main.py"-file in pure python.
The files "UhrzeitenApp.py" and "uhrzeitenapp.kv" bring logic an GUI together by using Python, Kivy and KivyMD