Seems like good information, any chance of an English translation?
The exercises are indeed very helpful, but the app keeps crashing and seems to have problems starting up. It creates a lot of instances of itself which seem to load simultaneously. This makes starting teh app take up to 3 minutes only to crash as soon as the screen turns off and back on. Would rate 4/5 if this werent the case.
Kleine Fehler behoben