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The short answer

Best sound bath app

The best sound bath app records real instruments instead of generating tones, gives each piece a composed beginning and end instead of a clip on repeat, and tells you what is in the recording rather than what it will do to you. Stillee ships thirteen recorded pieces built from Tibetan singing bowls, a church bell, crystal bowls, temple bells, a low drone, and a circle of human voices, with four of them running twelve to thirteen minutes before the loop rejoins itself.

Updated August 22, 2026. Reading time about four minutes.

What to look for

The criteria that actually matter.

A sound bath is not a technique, so the usual questions about protocol and evidence do not get you very far. What separates a good recording from a bad one is craft, and craft is checkable. Two real singing bowls tuned a fraction of a semitone apart genuinely interfere with each other in the air, producing the slow pulsing shimmer that people mean when they say a bowl sounds alive; that is physics, documented in the acoustics literature, and no synthesizer preset reproduces it convincingly. A loop that repeats every thirty seconds is audible to most listeners inside five minutes. A piece mastered louder than the track before it will jolt someone who is nearly asleep. Those are the things to examine, and every one of them can be verified by listening rather than believed.

  1. Recorded instruments, not generated tones

    Ask what is actually in the file. A struck bowl has an attack, a body, a wandering decay, and room around it. A synthesized approximation has a steady partial stack and no room. You will hear the difference on the third listen even if you cannot name it on the first.

  2. A loop long enough to disappear

    This is the single biggest tell. Most ambient audio in mobile apps is a short clip with a loop flag on it, because that is free to build. Set a piece running and wait. If the same small swell comes back around every thirty or sixty seconds, you are listening to a clip, and once your ear finds the seam it will never lose it again.

  3. A composed shape, or an honest absence of one

    Good sitting pieces build and settle. Good sleep pieces deliberately do not, because an arrival is the enemy of falling asleep. Either is fine. What is not fine is an app that cannot tell you which one a given piece is, because that means nobody decided.

  4. One consistent loudness across the catalog

    Check whether two pieces played back to back sit at the same level. A catalog assembled from mixed sources will spike, and a spike at 3 AM undoes the whole point. Mastering to a single target is unglamorous work that only shows up when it is missing.

  5. Plain talk about what the sound is

    The category is thick with mechanism claims: frequencies that repair, tones that balance, numbers printed on the artwork. None of that is supportable, and an app willing to say it is willing to say other things too. Prefer the app that describes the recording and stops there.

  6. Nothing after the end

    When a piece finishes, nothing should follow it. No chime, no autoplay into the next track, no closing thank-you. The end of the sound should be the end of the sound.

Where Stillee fits

What we built, against those criteria.

Everything on the shelf is a recording

Tibetan singing bowls, a church bell, crystal bowls, temple bells, a low drone, a circle of human voices, and the air of the rooms they were recorded in. Nothing is generated. The slow waving when two bowls overlap is two real bowls, almost in tune, doing that to the air.

The Endless pieces loop at their full composed period

Twelve to thirteen minutes, written so the ending flows back into the beginning. Making that join inaudible needed a native audio engine, because a web audio element cannot wrap without leaving a hole and Web Audio does not survive a locked screen. The Toning drone goes further: about nine layers, each on a cycle length that shares no common factor with the others, so the combination does not come back around inside a listening session.

One loudness, and the same piece every time

The whole shelf is mastered to a single target matched against a track already shipping, so nothing jumps at you in the dark. And there are no shuffled variants: the piece you played last night is the piece you get tonight. At 3 AM, familiar is the point.

One piece is free forever

After the Wave, fifteen minutes for the hour after a panic attack, is free for everyone, always, the same promise the panic flow already makes. The other twelve pieces come with premium.

Download Stillee on the App Store Or subscribe on the web

FAQ

The questions people ask after they ask the first one.

What is a sound bath?

A stretch of sound, usually singing bowls, bells, gongs, and long held tones, meant to be listened to rather than practised. There is nothing to follow and nothing to get right. In person it is a room with instruments in it. Recorded, it is a piece of music with no melody and no words.

Do sound bath apps use real singing bowls?

Some do, many do not. Synthesized approximations are cheaper and easier to loop, and the marketing rarely distinguishes them. The test is to listen for room and for decay: a real struck bowl has both, and its overtones wander as it fades. Stillee records real bowls, and says so because it can be checked.

Why does looped ambient audio sound repetitive so fast?

Because most of it is thirty to sixty seconds long. Your auditory system is very good at recognising a pattern it has heard four times, and once it locks on, the repetition is all you hear. The fix is not a better fade, it is a longer composition, which is considerably more work to write and harder to loop cleanly.

Is Sound Bath in Stillee the same as sound healing or sound therapy?

Those are the words people search with, and we will use them in a sentence like this one, but we make no treatment claim and never will. Nothing on the shelf is described as healing, balancing, or treating anything. We can tell you exactly what is in the recording, and we would rather do that than tell you what it does to you.

Is Sound Bath the same as the NSDR tracks?

No, and the naming overlaps in one place, so it is worth separating. The NSDR library is guided: a voice walks you through a body scan at eight, twenty, or sixty minutes. Sound Bath has no voice except in the Toning session, and its Deep Rest pieces are forty-five wordless minutes of one deep tone. Both live under Sleep. They are different practices.

How much of it is free?

One of the thirteen pieces. After the Wave is free forever, for everyone. The rest of the shelf is included with a Stillee subscription, along with the sleep library, the breathing Shapes, and the multi-week programs.

Do I need headphones for a recorded sound bath?

For the sitting pieces, yes, and it makes a real difference: the space between two overlapping bowls lives in a depth a phone speaker cannot reach. For anything you intend to fall asleep to, no. Those pieces are built for a phone face-down on a nightstand, because falling asleep in earbuds is not comfortable.

Related reading

Keep going.

References

  1. [1] The acoustics of Tibetan singing bowls. Terwagne, D., and Bush, J. W. M. (2011). Tibetan singing bowls. Nonlinearity, 24(8).
  2. [2] Loudness measurement and target levels. EBU Recommendation R 128, Loudness normalisation and permitted maximum level of audio signals; ITU-R BS.1770 loudness algorithm.
  3. [3] Encoder and decoder delay in MP3 playback. Hydrogenaudio Knowledgebase, Gapless playback: LAME encoder delay and the MPEG decoder delay that together offset the start of a decoded frame.
  4. [4] Singing bowl meditation, self-report. Goldsby, T. L., et al. (2017). Effects of Singing Bowl Sound Meditation on Mood, Tension, and Well-Being: An Observational Study. Journal of Evidence-Based Complementary and Alternative Medicine, 22(3). Observational and unblinded, with no control for the quiet room or the lying down, so it describes what participants reported rather than what the sound did.