Slo: Sleep Sounds, Brown Noise

Name: Slo: Sleep Sounds, Brown Noise
Rating: 4.9 (59 reviews)
Author: Dawid Kowalski

Relaxing Sound Machine

Free · In‑App Purchases

59 Ratings
Age Rating

4+
Years
Category

Health & Fitness
Developer

Dawid Kowalski
Language

EN
English
Size

81.9
MB

Sleep sounds app with brown noise, white noise, pink noise, and rain sounds to help you sleep better, focus, and relax. Download the best sleep sounds and noise app today. PREMIUM SLEEP SOUNDS Experience scientifically proven audio for better sleep. Slo offers brown noise for deep focus, white noise to block distractions, pink noise for restful sleep, and nature sounds like rain and ocean waves. KEY FEATURES • Brown noise - Deep, rich tones for concentration and sleep • White noise - Mask background noise and distractions • Pink noise - Gentle frequencies for deeper sleep • Rain sounds - Natural rainfall and thunderstorms • Ocean waves, waterfalls, and nature sounds • Timer and mix multiple sounds • Offline playback - no internet needed BENEFITS Sleep Better: Fall asleep faster with soothing sleep sounds designed for bedtime. Improve sleep quality naturally. Boost Focus: Block distractions with brown noise and white noise. Perfect for studying, working, or reading. Reduce Stress: Calm your mind with relaxing nature sounds. Lower anxiety and promote relaxation. Aid Meditation: Enhance mindfulness with ambient sounds that help you stay present. WHY CHOOSE SLO? The #1 sleep sounds app trusted by millions. High-quality audio, simple interface, and proven results. Free to download with premium sounds available. Download Slo now and experience better sleep tonight. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Terms of Service: https://meltedbutter.co/terms/noise.html Privacy Policy: https://meltedbutter.co/privacy/noise.html FREQUENTLY ASKED QUESTIONS What is the best app for brown noise? Slo generates continuous, high-quality brown noise specifically tuned for deep sleep and focus. Unlike looped recordings, Slo creates endless unique audio that never repeats. Does brown noise actually help you sleep? Yes. Studies show brown noise reduces the time to fall asleep and masks disruptive sounds like traffic, snoring, and noisy neighbors. Slo's deep-frequency brown noise is especially effective for light sleepers. What's the difference between brown noise, white noise, and pink noise? White noise contains all frequencies equally (like static). Pink noise emphasizes lower frequencies (like steady rain). Brown noise goes even deeper - like a rumbling waterfall or strong wind. Slo offers all three so you can find what works best for you. Can I use it for studying and focus? Absolutely. Many users prefer brown noise for deep work, studying, and ADHD focus. Slo's continuous playback helps maintain concentration for hours. Does it work offline? Yes. All sounds in Slo are generated on-device and work without an internet connection - perfect for flights, camping, or areas with no signal. Is Slo free? Slo offers free sounds with a timer. Premium unlocks the full sound library, mixing, and unlimited playback. Can I mix multiple sounds together? Yes. Slo lets you layer sounds - combine brown noise with rain, add thunder to white noise, or create your own custom soundscape with adjustable volumes. Does Slo have a sleep timer? Yes. Set a timer to automatically stop playback after you fall asleep - 15 minutes, 30 minutes, 1 hour, or custom duration. Is brown noise better than white noise for babies? Many parents find brown noise more soothing for babies because of its deeper, gentler frequency. Slo offers both so you can test which helps your baby sleep best.

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Ratings & Reviews

4.9

out of 5

59 Ratings

My custom mix for falling asleep
02/19/2025

Mazeppa
I have used many different ambient sound apps in the past and really appreciate the quality of sounds included in this app. Not just white noise and gray noise, you have easily design your own favorite combination of these plus blue, light, pink, green noise and more. Plus, excellent nature, rain, and water sounds. Simple, clean interface.
My custom mix for falling asleep
02/19/2025

Mazeppa

I have used many different ambient sound apps in the past and really appreciate the quality of sounds included in this app. Not just white noise and gray noise, you have easily design your own favorite combination of these plus blue, light, pink, green noise and more. Plus, excellent nature, rain, and water sounds. Simple, clean interface.
Could be great!
08/08/2025

luvyamuchmissyamore
I love this app and use it often. I like the waterfall effect, but after a certain time it fades out then starts again. It is not looped and I cannot go to sleep by it. I’m currently using noise and have no problem with the ones I use. if you want to set the timer, it takes 4 touches to set it and get back to the main screen. Should only be 3.5 stars, but they do update it regularly and I expect these are things that will not be an issue in the future.
Could be great!
08/08/2025

luvyamuchmissyamore

I love this app and use it often. I like the waterfall effect, but after a certain time it fades out then starts again. It is not looped and I cannot go to sleep by it. I’m currently using noise and have no problem with the ones I use. if you want to set the timer, it takes 4 touches to set it and get back to the main screen. Should only be 3.5 stars, but they do update it regularly and I expect these are things that will not be an issue in the future.
Excellent App with a very good interface
07/04/2025

fumbleweed
A lot of sound choices. Nature, rain, water, and a lot of frequency choices and some other things I never heard of. I use this a lot, and I’m very happy with it. The developer updates often and is accessible.
Excellent App with a very good interface
07/04/2025

fumbleweed

A lot of sound choices. Nature, rain, water, and a lot of frequency choices and some other things I never heard of. I use this a lot, and I’m very happy with it. The developer updates often and is accessible.
Great multi-purpose sounds app!
02/22/2025

BAR112
Nice selection of white noise, gray noise, and others. Also includes peaceful nature sounds plus mixes. The only thing that could make it any better would be some relaxing nature videos or animated gifs to go along with the sounds. Recommended!
Great multi-purpose sounds app!
02/22/2025

BAR112

Nice selection of white noise, gray noise, and others. Also includes peaceful nature sounds plus mixes. The only thing that could make it any better would be some relaxing nature videos or animated gifs to go along with the sounds. Recommended!

Bug fixes and improvements.

Version 3.99.0 May 11

Data Used to Track You

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- Location
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- Usage Data
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Data Linked to You

The following data may be collected and linked to your identity:
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- Usage Data
- Diagnostics
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Accessibility

Information

Seller: Dawid Kowalski
Size: 81.9 MB
Category: Health & Fitness
Compatibility: Requires iOS 15.6 or later.

iPhone
Requires iOS 15.6 or later.

iPad
Requires iPadOS 15.6 or later.

iPod touch
Requires iOS 15.6 or later.

Mac
Requires macOS 14.6 or later.

Apple Vision
Requires visionOS 1.0 or later.
Languages: English
Age Rating: 4+

4+

Learn More
In-App Purchases: Yes

Lifetime Access $49.99

Monthly Premium $5.99

Yearly Access $29.99

Lifetime Access $24.99

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