Make Your Smartphone Turn Off Your Music When You Fall Asleep

If you like to listen to music as you fall asleep, this app for Android will monitor your slumber and stop the music once you've fallen into a deep sleep.

It monitor your body movement using your phone's accelerometer to judge when you've fallen asleep

Once you do, it'll slowly turn down the volume over a few minutes and stop playing. 

Download Link :- Music Off (Free) | Google Play Store