Slumbertone: Sleep Sounds

Nine sounds. One timer. No noise you didn't ask for.

Slumbertone is a quiet, ad-free sound machine for sleep, focus, and calm. Pick a sound, set a timer, put the phone down.

FIVE CLASSIC NOISES — ALWAYS FREE
• White — a steady, even hush
• Pink — softer and warmer than white
• Green — the midrange of the natural world
• Brown — deep and rolling, like distant surf
• Deep Brown — lower still, felt more than heard

NATURE SOUNDS PACK — ONE-TIME UNLOCK
• Birdsong — a bright morning canopy
• Crackling Fire — slow embers in a quiet grate
• Tibetan Singing Bowls — long bronze tones, fading
• Wind Chimes — loose notes on a slow breeze

Tap any locked sound to hear thirty seconds before you decide. One purchase, yours forever. No subscription, ever.

A SLEEP TIMER THAT ACTUALLY SLEEPS
Choose 15 minutes, 30, an hour, any custom duration, or a wake-up time. Slumbertone fades out gently when the time comes — or stops instantly, if that suits you better.

BUILT FOR THE DARK
Every sound is a two-minute studio loop that repeats with no click and no gap, so there is no seam to catch your ear at 3am. Switching sounds crossfades instead of cutting. The background breathes slowly in the color of whatever is playing, and the whole app is dark by design — nothing on screen is brighter than it needs to be.

• Plays in the background and with the silent switch
• Full lock screen, Control Center and Dynamic Island controls
• iPhone and iPad layouts
• Works offline once installed
• No accounts, no ads, no tracking, no data collected

Headphones or a bedside speaker recommended.

Slumbertone is not a medical device.