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Slo: Brown Noise

Slo: Brown Noise

Sleep Sounds, Sound Machine

60 ratings
24 reviews
With Ads
💪 Health & Fitness
🎵 Music
Free
In-App PurchasesWith Ads

Details

  • Released
  • Updated
  • December 19, 2024
  • August 1, 2026

Features

Developer

Dawid Kowalski
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Slo: Brown Noise screenshot #1 for iPhone
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iphone
ipad
🧾$24.99 - $49.99
In-App Purchase↘︎
⭐24
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❓5 answered
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About

This app offers a variety of scientifically proven sleep sounds, including brown, white, and pink noise, as well as nature sounds like rain and ocean waves. It helps users fall asleep faster, improve focus, reduce stress, and aid meditation with its high-quality audio and customizable features.

✓Brown, white, and pink noise options
✓Nature sounds (rain, ocean waves)
✓Timer functionality
✓Mix multiple sounds
✓Offline playback
✓Improve sleep quality
✓Boost focus and concentration
Show original description
+2

What's New in Slo

3.117.1

August 1, 2026

Bug fixes and improvements.

Subscription plans

Yearly Access

Enables all Premium features for a year

$29.991 Year
Price Updates
August 1, 2026→$29.99
October 23, 2025→$29.99
September 14, 2025→$29.99
June 30, 2025→$29.99
May 25, 2025→$39.99
May 4, 2025→$29.99
April 4, 2025→$29.99
March 16, 2025→$29.99
March 3, 2025→$29.99
February 24, 2025→$17.99
February 17, 2025→$29.99
February 11, 2025→$29.99
February 5, 2025→$29.99
January 29, 2025→$29.99
December 28, 2024→$19.99
December 22, 2024→$14.99
How to cancel Slo subscription ⁉️
7

In-App Purchases

$49.99

Lifetime Access

Lifetime access for all the premium features

Events

Read more about Summer Wind Down
Event EndedSpecial Event

Summer Wind Down

A curated summer nights collection

May 5, 2026 — May 31, 2026

Read More

Read more about Spring Reset
Event EndedChallenge

Spring Reset

7 Nights of Better Sleep

Apr 7, 2026 — Apr 28, 2026

Read More

Read more about Solfeggio & Binaural Beats
Event EndedMajor Update

Solfeggio & Binaural Beats

New collection of sounds

Jul 6, 2025 — Aug 3, 2025

Read More

See All

User reviews

Most RecentHighest RatedLowest Rated

;)

Its good (i guess)
Naya miss cutieNaya miss cutie

Perfect Sleep & Relaxation Sounds

“Brown Earth Rumble” is perfect for sleep, and the ability to layer sounds is *chef kiss*
jcollingsjcollings

The best Brown Noise ever!

This sound is perfect for sleep. I have lifetime memberships to 3 apps that cost me close to $500 all together. This has been my go to sound and app for two months…

I strongly recommend this app. Nothing comes close. It makes me sleep like a baby!

THANK YOU!
BuffalonianJohnBuffalonianJohn

Could be great!

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.
Show more
luvyamuchmissyamoreluvyamuchmissyamore

I use it every night

Really nice app, I use it every night to fall asleep, I especially like the feature to combine different sounds! Great job to the developer
peterle95peterle95
See 19 more reviews

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FAQ

What does the Slo app do?

The app provides a collection of scientifically proven sleep sounds, including various types of noise (brown, white, pink) and nature sounds like rain and ocean waves. These sounds are designed to help users fall asleep faster, improve their sleep quality, boost focus, reduce stress, and aid in meditation.

What are the key features of this sleep sounds app?

Key features include a variety of noise types like brown, white, and pink noise, as well as nature sounds such as rain, ocean waves, and waterfalls. The app also offers a timer, the ability to mix multiple sounds, and offline playback, meaning no internet connection is required.

Is the Slo app free to download and use?

The app is free to download and offers a selection of sounds. However, premium sleep sounds are available for purchase through in-app purchases, providing access to a wider range of scientifically proven audio for enhanced sleep and relaxation.

What are the benefits of using this sleep sounds app?

Users can benefit from falling asleep faster, improving overall sleep quality naturally, blocking distractions to boost focus for studying or working, reducing stress and anxiety with calming nature sounds, and enhancing mindfulness during meditation sessions.

Can I use this app without an internet connection?

Yes, the app supports offline playback. This means you can download your preferred sounds and use them without needing an active internet connection, making it convenient for use anywhere, anytime.