why ad-free?
Because a sleep app that plays an advert at 3 a.m. is not a sleep app. Ad Free Sleep is exactly what the name promises: free sleep sounds with no ads, no account, no tracking and no paywall. Pull down to play, put the phone face-down on the nightstand, and it quietly does its job until morning.
what is brown noise?
Brown noise puts all its energy low down — a deep, steady rumble like distant surf, a waterfall heard through a wall, or the hum of a plane cabin. Because it has almost no hiss, many people find it the most physically relaxing sound to fall asleep to, and it is a favourite for quieting a busy mind.
what is pink noise?
Pink noise sits between white and brown: every octave carries the same energy, which is close to how our ears naturally hear. It sounds like steady rainfall or wind through trees — soft, even, and never sharp. Pink noise is the one most often used in sleep research on deeper, more stable sleep.
a timer that falls asleep with you
Pull down — a short tug is half an hour, a long stretch is hours, all the way is all night. The sound doesn't stop when the time runs out — it melts away. The final stretch fades so slowly that the moment of silence is impossible to catch, the same trick a parent uses sneaking out of a nursery.
made for the nightstand
After a few seconds of playing, the screen turns near-black: just a faint crescent, the minutes remaining and the time. It keeps your phone awake so the sound never stops, while using almost nothing on an OLED screen. Add the site to your home screen and it works offline like a native app — every sound you've played is saved on the phone.
questions
Is it really free, with no ads?
Yes. No ads, no account, no tracking, no paywall — nothing to unlock. That is the whole point of the site.
Brown, pink or white — which is best for sleep?
Brown is the deepest and most rumbly; pink is balanced and rain-like; white is the brightest and masks sharp sounds (clicks, voices, snoring) best. Try each for a minute and keep the one that lets your shoulders drop.
Will it keep playing all night?
Yes — pull all the way down for all night. Keep the phone plugged in; the near-dark night screen keeps the audio running and barely sips battery on OLED phones.
Does it work offline?
Yes. Add it to your home screen and everything you've played is cached — airplane mode is actually the perfect sleep mode.
How loud should it be?
Quieter than you think — about a soft shower heard from the next room. Masking works over hours at low volume; it doesn't need to be loud.