Free
no card needed
- Mix up to three sounds at once
- Sleep timer and sleep mode
- Saved mixes and favorites
- Free
- $0
- no trial to cancel, no card needed
Sleep sounds that never loop.
Real recordings of rain, surf, crickets and a bedroom fan, plus seven shades of noise. Mix them your way, set a timer that fades out gently, and let the screen go dark.
Out now on Android, coming soon to iPhone. Free to start. On iPhone? Get notified
33 sounds, most of them recorded.
Field recordings from Freesound, used under CC0 and CC BY licenses: a stream over stones, waves on the Baltic coast, a train in motion, a cat purring up close. The noise colors and tones are generated on your phone. Every sound has its own painting.
Rain without a short, obvious loop.
Many sleep sound tracks repeat a short clip. Once you notice the seam (a drip, a gust, a click) you start waiting for it, and that's the opposite of falling asleep.
Nightwool takes segments from random places in a longer recording and fades each one into the next. The order and length change every time, so the sound keeps moving the way real rain does.
The picture follows the night.
Every sound has a full-screen painting in four versions. Nightwool shows the one that matches your clock and crossfades slowly when the hour turns. When the sleep timer is running, the artwork fades almost to black.
Made for the last half hour of your day.
Lay rain over brown noise and add a fan in the next room. Each sound has its own volume and tone, so rain can sound like it's outside the window instead of on the roof. Save the mixes you like.
15, 30 or 45 minutes, one or two hours, any length from 5 minutes to 10 hours, or until a time you pick. The sound fades out slowly over the last tenth of the timer (from 30 seconds up to 10 minutes) instead of stopping dead.
One tap turns the screen black. The sound keeps playing and nothing glows on the nightstand.
Recorded strikes arrive at random moments, but every one fades in. Choose how often the storm rumbles and how far away it is.
A steady heartbeat that you can slow to 40 or speed up to 100 beats per minute.
No account. No ads. Works offline.
Nightwool doesn't ask who you are. There's no sign-up, no advertising and no analytics in the app. Every sound is stored on your phone, so it plays in airplane mode and in a tent.
Purchases go through the App Store or Google Play, and RevenueCat confirms them using a random ID created by the app, not your name or e-mail. Apart from that, the app sends nothing to us.
Free to start.
8 sounds, the sleep timer and sleep mode are free. Premium adds the rest of the library and a gentle wake-up.
Premium
all 33 sounds
- Thunder, river, fireplace, airplane, train and 20 more
- Mix as many sounds as you like
- Gentle wake-up with birdsong that fades in
- Yearly
- $19.99 a year
- billed once a year until you cancel; free trial where offered
- Lifetime
- $39.99 once
- one-time purchase, no subscription
- Monthly
- $3.99 a month
- renews monthly until you cancel
Prices in US dollars. The App Store and Google Play show the final price in your currency.
Lifetime is a one-time purchase: no subscription, nothing renews. Everything is bought through the App Store or Google Play, no account needed. What each option covers is in the terms.
Where can I get Nightwool?
On Android it's on Google Play now. The iPhone version is coming soon: leave your e-mail below and we'll tell you the day it's on the App Store.
Is Nightwool free?
It's free to start. 8 sounds are free (white, pink and brown noise, rain, ocean waves, crickets, a fan and a heartbeat), and so are the sleep timer, sleep mode and saved mixes. Premium unlocks all 33 sounds, mixes with more than three sounds at once and the gentle wake-up alarm. In the US it's $19.99 a year (with a free trial where the store offers one), $39.99 once for Lifetime, or $3.99 a month; the app shows the exact price in your currency before you buy. Subscriptions renew until you cancel. Lifetime is a one-time purchase with no subscription; the terms explain what it covers.
Do I need an account or an internet connection?
No and no. There's no sign-up, and every sound is stored inside the app, so it plays in airplane mode. When you're online, the app checks your Premium status and loads prices through RevenueCat when it starts, and Apple or Google handle buying and restoring.
Do the sounds loop?
The recordings don't loop the way a short clip does. Nightwool plays segments from random places in each recording and fades one into the next, so you won't hear the same seam every few seconds. The heartbeat and the music-box lullaby are rhythmic, so those two repeat on purpose.
Is it safe to sleep with sound on all night?
Many adults sleep with a quiet, steady sound, but research on long-term effects is limited. Keep it low, not on full volume next to your ear. We wrote a careful guide with the sources: Is it safe to sleep with white noise every night?
Can I use it for my baby?
Many parents do, but follow the pediatric advice: keep the phone well away from the crib, the volume low, and never put a device inside the crib. Our guide covers the details: White noise for babies.
Does Nightwool collect my data?
As little as we could manage. No account, no ads, no analytics in the app. Your mixes stay on your phone. Purchases are handled by Apple or Google, and RevenueCat checks them using a random ID created by the app (not your name or e-mail). Details in the privacy policy.
Out now on Android. iPhone is next.
Get Nightwool on Google Play today. On iPhone? Leave your e-mail and we'll tell you the day it's on the App Store. New articles only if you want them.
