AhsanSarwar45
commented
2 months ago I'll look into it but I doubt it will work. The app you mention is the AOSP desk clock (com.android.deskclock) which (as far as I am aware) has special permissions to do all kinds of stuff that other third party apps can't. Like ignoring battery optimizations, running when device is turned off etc. I might be wrong so I guess its worth looking into. Do let me know if you come across another (non-system/non-stock) app that can do poweroff alarms.
Is your feature request related to a problem? Please describe. I'd like to keep my phone off at night to avoid battery drain, while still be able to wakeup on time.
Describe the solution you'd like Some clock apps support poweroff alarm. e.g. this one coming with lineage os. Here is a stackoverflow answer about it.