Slumbertone

Armyrunner Studios, LLC

About this app

Slumbertone is a clean, ad-free noise machine for sleep, focus, and calm. Choose white, pink, green, or brown noise—seamlessly looped with smooth crossfades and a modern glass aesthetic. Set a countdown or a specific stop time; Slumbertone will fade out gently when it’s time to rest.

• White, pink, green & brown noise
• Seamless looping with smooth crossfades
• Timers: countdown or stop-at-a-time with gentle fade
• Plays in the background and with the silent switch
• iPhone & iPad layouts; light & dark themes
• No accounts, no ads, no tracking

Why it helps
Consistent color noise masks distractions, smooths out environmental sounds, and can make it easier to fall asleep, concentrate on deep work, or relax.

How to use
Pick a noise color, press Play, and set a timer (or a stop time). Adjust appearance with the sun/moon toggle. Slumbertone continues in the background so you can lock the screen or switch apps.

Notes
• Works offline once installed
• Headphones or a bedside speaker recommended
• Slumbertone is not a medical device

What’s new

v1.6.0
• Your lock screen and notification now show the sound name (Pink, Green, Brown, White) — not just "Slumbertone".
• Smoother fade-in when you press Play.
• Faster sound switching from the home wheel.
• Cancelling a sleep timer aborts any in-flight fade-out cleanly.
• Music and podcast apps regain audio focus instantly when Slumbertone stops.
• Reliability and crash fixes for the audio engine.
Sweet dreams.