Sleep music with no loop point to wake you
The problem with most sleep tracks is the seam. A thirty-minute recording set to repeat has a moment where it ends and starts again, and that moment is a change in the room. Sleep researchers who study environmental and traffic noise have found that it is rarely loudness alone that pulls a sleeper toward wakefulness. An intermittent or changing sound reliably provokes more arousal, more transitions into lighter sleep, than a continuous sound at a comparable level, because the brain's arousal system is tuned to notice change, not volume. A loop point is exactly that kind of change, however quiet it is. StillTune has no seam because it has no recording. Sleep mode is composed continuously, phrase by phrase, for as long as you leave it running.
It gets slower and thinner as it goes
Sleep mode is not simply a quieter version of the daytime sound. The phrasing spaces out, the filter closes down toward the low end, and the arrangement drops material as it settles: long sustained tones, glass and soft bells arriving further and further apart, with the low pad carrying most of it. Nothing arrives suddenly, and nothing builds to a peak, because there is no peak in the shape.
A timer that fades instead of cutting
Set the sleep timer and it will bring the level down gradually and stop on its own, so there is no abrupt silence at the end either. If you fall asleep before it runs out, it handles the rest. Playback keeps going with the screen off and answers the Lock Screen controls, so you are not opening the app in the dark to pause it.
Airplane Mode all night, with nothing downloaded
This is the part that surprises people. StillTune does not download audio. It stores the score, the notes and their timing, which is megabytes rather than gigabytes, and your phone performs it locally. Six hours of music is a small fraction of what six hours of streamed audio would cost you in data or storage.
So you can put the phone in Airplane Mode at bedtime and it keeps playing: no Wi-Fi, no mobile data, no radio next to your head all night. Play a mode once while connected and it is loaded; after that it is self-sufficient. Come back online whenever you want new material.
Noise and weather, if silence is not the problem
Sometimes the issue is not that the room is too quiet but that it is too inconsistent: a neighbour, traffic, a partner. This is what audiologists call auditory masking: a steady background sound narrows the gap between the room's baseline and any sudden peak, which is the actual mechanism behind why hospitals trial white noise on wards with unpredictable overnight noise. Every mode runs from a Sound DNA recipe you can adjust while it plays, so you can raise a steady bed underneath the music:
- Brown noise for the deepest, most low-weighted masking, or pink noise for something softer and more even. Pink noise specifically has shown up in a few sleep-lab studies as a way to strengthen slow-wave sleep, though the evidence is not unanimous. At least one study found a tradeoff with less REM time, which is a reasonable argument for keeping it quiet rather than loud.
- White noise when the sound you need covered is higher up.
- Rain, ocean waves, wind, distant thunder or a fire when you would rather have weather than a flat bed.
You can also drop the music almost out entirely and keep only the textures, if what you actually want tonight is rain. Save the mix, or browse the Sleep sounds library for recipes other people sleep to.
Start tonight
No account is needed to listen. Press play below and the first phrase starts immediately. The same engine also runs a focus music mode for the other end of the day, and a Drift mode for when you are not trying to do anything in particular.