How to set ios to stop playing audio when timer ends

Choose your timer length. I set mine to 45 minutes. Then, tap the option "When Timer Ends." I am going to replace the default ringtone with the feature to stop playing audio when the timer ends.

Instead of setting a ringtone to play when your timer goes off scroll to the bottom and select the option, "Stop Playing." Then, select set.

Start your timer. Now when your timer goes off any playing audio will stop. If you don't already have audio playing start an audiobook, podcast, video, etc!

Note: when your timer ends there will be no ringtone - instead your audio will just stop playing. Great for falling asleep, enjoy!