Designed for iPhone · iOS 17 or later
Start a mix in seconds.
- Switch on one or more sounds.
- Set each layer to the level that feels right.
- Adjust Master volume, then tap Play.
- Optionally set a timer or save the blend as a preset.
Keep playing while locked
Start playback before locking your iPhone. Deep Sleep Mixer uses the system audio playback mode, so the mix continues and Play/Pause remains available on the Lock Screen.
Use the sleep timer
Tap the moon button and choose 15, 30, 45, 60, or 90 minutes. Playback fades during the final interval selected in Settings, then stops.
Save a favorite mix
Turn on the sounds you want, open Presets, enter a name, and choose Save current mix. Tap a saved preset later to restore it.
Headphones disconnect
Playback pauses when a connected output is removed so your mix does not jump unexpectedly to the iPhone speaker. Reconnect, then press Play when you are ready.
A sound will not start
Confirm at least one layer is switched on and its volume is above zero. Raise Master volume, check the iPhone output route, and make sure another audio app is not playing.
Playback paused unexpectedly
Phone calls, alarms, audio-route changes, and other system interruptions can pause playback. When the interruption ends, return to Deep Sleep Mixer and press Play if playback does not resume automatically.
Adjust playback boost
Boost adds controlled output gain after the mix. A built-in limiter protects against hard clipping, and speaker playback automatically uses low-frequency protection.
Remove saved app data
Delete saved mixes individually from Presets. Removing the app deletes its local data from the active device, subject to any iPhone backup you manage separately through Apple.
Privacy at a glance
Deep Sleep Mixer needs no account and contains no advertising, analytics, or tracking. Your saved mixes and timer preference stay on your device. Read the complete privacy policy.