July 21st, 2015
Android/iOS: If you like to listen to music as you fall asleep, these apps for iOS and Android will monitor your slumber and stop the music once you've fallen into a deep sleep.
The two apps—free Music Off for Android (pictured above) and $2.99 Autosleep Music Timer for iOS—monitor your body movement using your phone's accelerometer to judge when you've fallen asleep (not unlike similar alarm clock apps). Once you do, it'll slowly turn down the volume over a few minutes and stop playing. Of course, you could always just set a timer, too. [via lifehacker]