Use APKPure App
Get How Long Can I Sleep? old version APK for Android
How much sleep can I get this night? This app calculates it for you!
Do you also always calculate how much sleep you can get before going to bed?
From now on your phone will do this job for you!
This simple app shows you the remaining time until the next alarm using a notification in your status bar.
Note for Asus devices: You have to allow this app to start after boot up:
Settings > Power management > Auto-start Manager > How Long Can I Sleep > Allow