The short answer
Best sound bath app for sleep
The best sound bath app for sleep offers pieces where nothing arrives, everything sits at one consistent loudness, and the ending is either engineered to be imperceptible or does not exist at all. Stillee ships Wind-Down and Deep Rest for exactly that, plus Endless versions that continue until you stop them or a sleep timer does, so there is no ending to wake you.
Updated August 22, 2026. Reading time about four minutes.
What to look for
The criteria that actually matter.
Sleep changes what good sound is. Awake and sitting, an arriving bell is the best moment in a piece. Half asleep, it is the thing that pulls you back. The same goes for level: a piece mastered two decibels louder than the last one is unnoticeable at noon and a jolt at 3 AM. And endings matter most of all, because the standard shape of a guided track, a closing chime and a voice thanking you for joining, arrives precisely when it can do the most damage. What you want instead is either an ending so gradual you cannot locate it, or no ending at all. This is a different requirement from the cognitive sleep tools, which give a busy mind something to do; if a racing mind is your problem, that is the other guide.
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Nothing arrives
For sleep, events are the enemy. No bell entering at minute twelve, no swell you have not heard before, no texture change. A piece for falling asleep to should be recognisable in its first minute and never introduce anything after that.
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An ending you cannot locate, or no ending
Two acceptable answers. Either the piece spends its last several minutes leaving, so gradually that you cannot name the moment it stopped, or it simply continues until you stop it. What is unacceptable is a closing chime or a voice at the end, which is the single most common way sleep audio wakes people up.
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One loudness across everything you might play
If you queue two pieces, or play one tonight and another tomorrow, they should sit at the same level. Mixed-source catalogs spike, and a spike is the thing that wakes you. Ask whether the catalog was mastered to a single target.
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A real sleep timer, and no autoplay
An endless piece needs a way to stop on its own, and nothing should ever begin without you asking. If the app follows one track with another, it will eventually follow a quiet one with a loud one at the worst possible hour.
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Built for a speaker, not for earbuds
Nobody falls asleep comfortably in earbuds. A piece intended for sleep should be mixed to work from a phone lying face-down on a nightstand at low volume, and the app should say so rather than assuming headphones.
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The same piece, every time
Shuffled variants and generative regeneration are attractive features in daylight. At night they mean you cannot know what you are about to hear. Familiarity is a feature after midnight.
Where Stillee fits
What we built, against those criteria.
Wind-Down: nothing ever arrives
A warm drone that breathes, with no bells and no surprises anywhere in it. Its last eight minutes are the piece leaving, measurably: the loudness envelope tapers to almost nothing before it stops. The 20-minute Late version is darker, for past midnight.
Deep Rest: forty-five minutes that barely move
One deep tone, one soft texture, one gong swell near the start, and then nothing else on purpose. Three versions, Still, Open, and Deep, are the same rest in three characters, and you choose once and can change it anytime. Built for a speaker on the nightstand, phone face-down, volume low.
Endless: no ending to wake you
Wind-Down and Deep Rest both have Endless versions, each one continuous composition of twelve to thirteen minutes whose ending flows back into its own beginning with no audible seam. They stay until you stop them or a sleep timer does. That took a native audio engine to do properly, because the usual approaches either leave a hole at the wrap or get shut down when the screen locks.
And if sound is the wrong tool tonight
Some nights the problem is not the room, it is the thinking, and a drone will not touch it. Stillee also carries the cognitive night tools for that, plus a dedicated 3 AM surface that treats a nocturnal waking as a different state from bedtime. The shelf tells you when it is not the answer.
FAQ
The questions people ask after they ask the first one.
Is a sound bath good for sleep?
Many people find a steady, eventless stretch of sound easier to fall asleep to than silence or than a guided track, and it can mask a noisy street or a snoring partner. That is worth saying plainly and it is as far as anyone can honestly go: it is not a treatment for insomnia, and nobody has separated the effect of the sound from the effect of lying still in a dark room with nothing to do.
What is the difference between this and the sleep meditations?
A sleep meditation is guided: a voice gives your attention somewhere to go. A sound bath is wordless. If a racing mind is what keeps you awake, the guided tools and the cognitive night techniques tend to work better, because they occupy the thinking. If you are tired but the room is too quiet or too loud, wordless sound is the better fit.
Will it stop on its own?
The Journeys end by themselves, gradually, with nothing after them. The Endless pieces do not end at all by design, so they take a sleep timer. Either way nothing follows a piece: no chime, no next track, no closing voice.
Can I play it all night?
Yes. Deep Rest and Wind-Down both have Endless versions built for exactly that, running continuously until you stop them. If you would rather it not run until morning, set the timer.
Do I need headphones to sleep with it?
No, and we would rather you did not. The sleep pieces are mixed for a phone speaker on the nightstand at low volume, face-down. Only the sitting pieces genuinely reward headphones.
What about waking at 3 AM?
A waking is a different state from bedtime, and Stillee treats it as one: there is a dedicated 3 AM surface that opens dim and silent with content written for someone who is already awake, and it is free. A wordless Endless piece works well there too, precisely because it has no beginning to sit through.
Is any of it free?
After the Wave, fifteen minutes for the hour after a panic attack, is free forever. The 3 AM tracks are free forever as well. The rest of the Sound Bath shelf, including Wind-Down and Deep Rest, comes with a subscription.
References
- [1] Broadband sound and sleep onset. Riedy, S. M., et al. (2021). Noise as a sleep aid: A systematic review. Sleep Medicine Reviews, 55. Finds the evidence base small and mixed, with effects reported for sleep onset and none established for sleep maintenance.
- [2] The acoustics of Tibetan singing bowls. Terwagne, D., and Bush, J. W. M. (2011). Tibetan singing bowls. Nonlinearity, 24(8).
- [3] Loudness measurement and target levels. EBU Recommendation R 128, Loudness normalisation and permitted maximum level of audio signals; ITU-R BS.1770 loudness algorithm.