Ok, FHEM is it…

Version 1.8.22 will support FHEM (not yet published, coming soon!).

This allows for a lot of funny features:

• Radio/Sound system support,
• starting coffee machine at alarm time,
• …

https://android.chk.digital/personal-sunrise/features/fhem/

It can be installed from the Play Store even now: apply a Beta tester in the app’s page (near the bottom). According to Google you then also get beta apps.