Stop Music Timer is a little utility that does exactly this: it stops any music or other sound playing on your device when it runs out. You can use it when you work, study, excercise or sleep to control when you want your music or sound to stop.
Features:
- Custom duration (1 second to almost 100 hours)
- Presets for quick access
- Full-screen with dark background and a dim light option that let you focus while saving energy