Corona-Warn-App
Worked on the German Corona-Warn-App
app
FYEO
Supported the team of FYO with feature development and performance optimization.
https://play.google.com/store/apps/details?id=com.prosieben.fyeo
Apoda
A playful music player for Android.
Bluetooth Volume Manager
https://github.com/d4rken-org/bluemusic