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Stay in your own rhythm.

Rhylm is ambient sound for focus, rest and sleep: brown, pink and white noise, music written for it, a timer and a breathing guide.

App Store

iPhoneiPadMacApple Watch

Rhylm on iPad in the Pink theme: the diamond at the top, three soft waves across a rose and coral wash, and the track Stay Under the Tide at the foot.

Noise

Three noises, one gesture.

Tap anywhere to start or stop. Swipe left or right to move between Brown, Pink and White noise, and drag up or down anywhere to set the volume. Each noise brings its own colours.

Sound keeps playing in the background and with the screen locked, so you can read, work or sleep without the app open.

Rhylm on iPhone in the White theme: pale grey mist with white waves and the track title at the foot.

Music

Music, composed for it.

Rhylm’s music is written and produced by its developer, a composer and audio engineer, to sit over the noise. Double-tap the title to play or pause, swipe the card to change track, and long-press for the balance between music and noise.

  • 01Stay Under the Tide
  • 02Rainy Days
  • 03Everything Will Be Okay
Rhylm on iPhone in the Brown theme, with the music card open: Stay Under the Tide and a slider balancing noise and music.

Timer and breathing

Breathe, or keep time.

The top corners open a focus timer and a breathing session. Breathing follows one of two patterns, Simple to relax or 4-7-8 before sleep, paced by the diamond and gentle haptics.

A breathing session on iPad in the Brown theme: Breathe in… under the diamond, with an End Session button.

On your wrist, and in the menu bar.

On Apple Watch, press the diamond to play, swipe to change noise and turn the Digital Crown for volume. Swipe up for the timer and down to breathe; long-press the diamond for music.

On a Mac, Rhylm sits in the menu bar. Click the diamond to play, double-click it for the next noise, and drag the bar to set the volume.

Rhylm on Apple Watch in the Brown theme: the diamond on its own.
The music view on Apple Watch in the Pink theme: Stay Under the Tide with previous, play and next buttons and Done.
The breathing view on Apple Watch in the Brown theme, with Simple and 4-7-8 to choose from.
Rhylm on Apple Watch in the Pink theme, with Simple and 4-7-8.
The timer on Apple Watch in the White theme: hours, minutes and seconds set to 0, 5 and 0 over a Start button.
Rhylm’s menu bar panel on a Mac: the diamond and a sand-coloured volume bar at 100%. The panel’s music row: Done and the track Stay Under the Tide. The panel in the White theme, with a pale blue volume bar.

Getting started.

Rhylm has almost no buttons; the screen itself is the control. The guide that opens on first launch covers the same ground, and you can see it again by tapping the Rhylm logo in Settings.

  1. Tap to play

    Tap anywhere on the screen to start or stop the noise.

  2. Swipe to switch

    Swipe left or right to move between Brown, Pink and White noise.

  3. Drag for volume

    Drag up or down anywhere on the screen to set the master volume.

  4. Play the music

    Double-tap the music title to play or pause, swipe the card to change track, and long-press it for the mix of music and noise.

  5. Timer and breathing

    Open the timer or a breathing session from the top corners.

  6. Play alongside other apps

    Rhylm shows a Live Activity while it plays. Turn it off in Settings to let Rhylm play at the same time as audio from other apps.

Nothing to track.

No ads and no tracking. Rhylm doesn’t collect, store or share personal data, and everything happens on your device.

iPhone, iPad
iOS 18.6 or later
Mac
macOS 15.6 or later
Apple Watch
watchOS 11 or later
Version
1.1.3

Zixiang Zhang

MusicUndertide ↗GitHub ↗