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

Fresh new look and feel. The interface has been completely redesigned with a cleaner, more modern aesthetic — smooth gradients, refined glass cards, and a background that shifts color to match the sound you're playing.

Sound selection is now a scroll wheel right on the main screen. The play button now toggles to Pause while audio is running, and both timer pickers have been rebuilt as scroll wheels for a much more natural feel.