Get the app

Sleep sounds for iPhone

Mix the sound you fall asleep to.

Uyu layers 47 sounds, from rain on a tin roof to a fire, a café and brown noise, with tones it makes live: binaural beats, 432 Hz and the solfeggio set. Each one gets its own volume. Set a timer, and it fades out as you drift off.

Coming soon on the App Store Press play and try a mix
  • Works offline
  • No account
  • Paid once, no subscription

A quick mix

Tap a sound to add or remove it, then press play.

Use headphones for binaural beats. Each ear hears its own pitch: 200 Hz on the left, 206 Hz on the right.

Rain, Fireplace

Paused

Rain and Fireplace are recordings from the app, released under CC0 by Ylmir and PagDev. Brown noise and the beat are made right here in your browser.

What it does

Every sound you want, in one mix

Most sound apps play one track at a time. Uyu plays as many as you like at once, each at its own level, so the room sounds the way you want it to.

How it works

Three steps, then sleep

  1. Pick your sounds

    Tap a sound to add it to your mix. Layer rain over brown noise, a fire under a tone, whatever you sleep to.

  2. Set each one

    Every sound has its own volume. For a tone you can go further and set each ear’s level and pitch.

  3. Set the timer

    Choose when it stops and Uyu fades it out. Still awake? Add 15 minutes from the Lock Screen.

  • Now Playing in Uyu: Rain, Fireplace and Thunderstorm, each with its own volume slider. Caption: Layer sounds, your way.
  • My Mixes in Uyu: three saved mixes, Thunder & Tent, Deep Work and Dawn Walk. Caption: Save it. Come back anytime.

The details

Made for a whole night

What’s inside

47 sounds and 15 tones

Every sound in the app today, by family. Most are field recordings released to the public domain; the noises and the heartbeat were made for Uyu.

Rain 12

  • Rain
  • Thunderstorm
  • Rain on a Window
  • Rain on a Tent
  • Heavy Downpour
  • Rain on a Tin Roof
  • Light Drizzle
  • Rain and Hail
  • Sleet on a Garage Door
  • City Rain
  • Monsoon Rain
  • Rain in a Parked Car

Water 9

  • Shore Waves
  • Seaside Morning
  • Waves on Rocks
  • Flowing Stream
  • Forest Creek
  • Underground Stream
  • Waterfall
  • Fountain
  • Shower

Nature 10

  • Forest
  • Pine Forest
  • Dawn Birdsong
  • Night Crickets
  • Summer Meadow
  • Wind
  • Howling Wind
  • Snow & Wind
  • Wind in Dry Leaves
  • Frog Chorus

Warm 4

  • Fireplace
  • Beehive
  • Cicadas
  • Coffee Shop

Indoors and travel 7

  • Driving
  • Airplane Cabin
  • Fan Hum
  • Inside a Train
  • Refrigerator Hum
  • Dishwasher
  • Washing Machine

Noise 3

  • White Noise
  • Brown Noise
  • Pink Noise

Animals and heartbeat 2

  • Purring Cat
  • Heartbeat

Tones 15

  • 2 Hz Delta
  • 6 Hz Theta
  • 10 Hz Alpha
  • 16 Hz Beta
  • 40 Hz Gamma
  • 432 Hz
  • 174 Hz
  • 285 Hz
  • 396 Hz
  • 417 Hz
  • 528 Hz
  • 639 Hz
  • 741 Hz
  • 852 Hz
  • 963 Hz
  • Make your own

Pricing

Pay once. That’s it.

Uyu is a paid download. One price gets you every sound and every tone. There’s no subscription, no ads and nothing to buy inside the app.

Uyu for iPhone

One price, paid once

  • All 47 sounds and 15 tones
  • Sleep timer, saved mixes, Lock Screen
  • No subscription, no ads, no in-app purchases
Coming soon on the App Store

The App Store shows the price in your currency before you buy.

Questions

Questions and answers

Is there a subscription?

No. Uyu is a paid download: you pay once on the App Store and everything is included. No subscription, no ads and no in-app purchases.

Does Uyu work offline?

Yes. Every sound is stored on your iPhone and the tones are made on it, so Uyu plays on a plane or with no signal at all.

Do I need headphones?

Only for binaural beats, which play a slightly different pitch in each ear. Everything else, pure tones included, sounds fine through a speaker.

Are tones a treatment?

No. People use tones for sleep, focus and relaxing, on their own or under rain or noise. Tones are for relaxation and focus — Uyu is not a medical device. If you have epilepsy, a seizure condition or a hearing condition, ask a doctor first.

Can I play Uyu with a podcast or music?

Yes. Turn on Play alongside other audio in Settings, start Uyu first, then the other app. Lock Screen controls are off while it’s on.

Will it stop by itself?

Set the sleep timer, anywhere from 5 minutes to 3 hours, and Uyu stops when it runs out, fading out first if you like. Still awake? Add 15 minutes.

Which languages does the app speak?

English, Turkish, German, Spanish and French.

Is Uyu on Android?

Not yet. Uyu is on iPhone first; Android is planned.

What does Uyu know about me?

There’s no account, and your mixes stay on your phone. Uyu sends anonymous usage statistics and crash reports, which one switch in Settings turns off. The privacy policy has the details.

Guides

Read before bed

Plain answers to the questions people ask about sleep sounds.

Tonight, try your own mix.

Pick a few sounds, set the timer, and let Uyu fade out as you fall asleep.

Coming soon on the App Store

For iPhone · Paid once