Reverse Alarm Clock

--:--
Sound
Volume
Stop the sound
Snooze length
Before you sleep — reliability checklist
  • Plug the phone in. 8–10 hours of audio uses real battery.
  • Check the media volume (not ringer) once sound is playing.
  • Turn battery saver off — it's the main thing that kills background audio.
  • Lock the screen normally, but don't swipe the browser away from recent apps.
  • Enable Do Not Disturb so notifications don't duck or pause the sound.
8:00:00
playing until 6:30 AM
Sound
Volume
Tip: pressing ▶ on the lock screen snoozes too.