Deep Calm
Mix your own sleep sound from rain, ocean, storm, fire and white noise, then set a timer. Free Android app, plays offline, keeps going with the screen off.
π Build the sound you actually sleep to
Most sleep apps hand you a fixed track and hope it suits you. This one lets you mix the layers β rain over distant thunder, or fire under ocean β until it sounds like somewhere you can fall asleep.
What it does
- Layer several sounds at once and set the level of each one independently.
- Rain, ocean, storm, fire, wind and the noise colours: white, pink and brown.
- A sleep timer that fades out rather than stopping dead and waking you.
- Plays offline with the screen off, and does not stop when a notification arrives.
Who it is for
Light sleepers, shift workers sleeping in daylight, anyone with a noisy street or a snoring partner, and people who work better with a wall of sound.
White, pink and brown: the actual difference
The noise colours are not marketing names. Each one describes how the energy is spread across the frequencies you can hear, and that is what makes them sound so different from one another.
White noiseEqual power at every frequency. Because your ear groups the high frequencies together, that comes out bright and hissy β closest to an untuned radio or a fan at full tilt. It is the best one for burying a sharp, sudden noise.
Pink noisePower falls away as the frequency climbs, so each octave carries the same energy. That is the balance most natural sound has, and it is why pink noise is usually described as steady rain. Easier to leave on all night than white.
Brown noiseFalls away faster still, which leaves the low end dominant. Deep and rumbling, like a waterfall heard from a distance or surf from inside a house. The one people reach for when white noise feels too sharp.
There is no best one. A light sleeper on a noisy street usually wants white or pink, because the problem is masking sudden sounds. Someone who finds hiss irritating almost always ends up on brown. The reason to mix rather than pick is that the sound you actually sleep to is rarely a single one β rain over a low rumble beats either on its own.
Questions people ask
Which is better for sleep: white, pink or brown noise?
They differ in how the energy is spread. White is even across all frequencies and can sound harsh; pink is softer and closer to rain; brown is deeper, closer to a waterfall. Most people find pink or brown easier to sleep to, but it is genuinely personal β try each.
Does it keep playing when the screen is off?
Yes. It runs as a foreground audio service, so the screen going dark does not stop it.
Does it need internet?
No. The sounds are on the phone and play offline.