@kugiigi yep, exactly Guitartools

@kugiigi Ok, thanks! Just for the sake of reporting on this issue:
It seems that UT-Tweak-Tool is offering some basic control of background services (per app), but that doesn't work at least for the metronome app! Didn't try it with another app for now.

Regards

@kugiigi hi, that's nice to hear! I can contribute another undesired implication of lacking adjustable background services.
I'm using a metronome very often on UT. Everytime the display is going down, the metronome stops working! Running the metronome with an always-on display is pure battery drainage...