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Koala Browser - Sleep Better

Koala Browser - Sleep Better

Sleep Better and Browse Web

284 ratings
146 reviews
🔧 Utilities
📊 Productivity

Archived App (Last seen on 17 Jul 2026)

This is an archived listing of the app previously available on the App Store.

Although the app is no longer distributed by Apple, you can still view its description, screenshots, version history, ratings, and metadata for reference.

Details

  • Released
  • Updated
  • February 19, 2014
  • July 8, 2020

Features

Developer

AppRebel, Inc.
✨Promote your app ✨
Koala Browser - Sleep Better screenshot #1 for iPhone
Koala Browser - Sleep Better screenshot #2 for iPhone
iphone
ipad
🧾$2.99
In-App Purchase↘︎
📌Ready
Reviews summary↘︎
⭐146
Reviews↘︎
📝8+ tags
Tags↘︎
🔄6+ apps
Alternatives↘︎
❓5 answered
FAQ↘︎
📦w/o updates
Updates frequency↘︎
🖼️Get Icon
Icons↘︎

About

This web browser is designed to improve sleep quality by filtering out blue light emitted from device screens. It automatically adjusts display colors based on the time of day, creating a warmer tone at night to promote melatonin production.

✓Automatic color temperature adjustment
✓Blue light filtering
✓Download and view files
✓Darkness Boost for low brightness
✓Private browsing
✓Multiple browser tabs
Show original description

What users say

Summarized from real user reviews of Koala Browser. Based on 284 reviews and a 2.9/5 average, it highlights the 3 positives and 4 negatives reviewers mention most about this Productivity app.

Positive things

  • 🚀Reduces blue light
  • 👍Helpful for late night browsing
  • 🌙Restful on the eyes

Negative things

  • 🐛Crashes and freezes
  • 🔋Drains battery
  • 💸Excessive ads
  • 🔒Limited to browser only
See all reviews

What's New in Koala Browser

7.4

July 8, 2020

-Bug fixes -Fixed some UI issues

1

In-App Purchases

$2.99

Remove Ads

This In-App Purchase removes all advertisements controlled by the app.

User reviews

Most RecentHighest RatedLowest Rated

Pointless

When I got this I found that on my phone it only works when you’re in the app.I’m not sure if it’s meant to do that but I found that quite pointless.Also in settings you go to display and brightness then click Night Shift and you can do the exact same thing as the app would do so please don’t get this. You don’t need it!
Show more
So louSo lou

Works! Not perfect

Keyboard still not yellow
Dre86.Dre86.

It’s a browser app

I was hoping an actual full system blue light filter, where you can hop between apps. This is just a blue light filtered browser, outside of the browser it’s same light device.
how it is123456789how it is123456789

Google only

Only works with Google. Does not work beyond that.
youre daddyoyoure daddyo

I can’t delete my search history.

Great app. Very easy on eyes. No ads. Easy to use. Only works with google. Pisses me off I can’t delete my search history! I may end up just deleting the app.
tony12toestony12toes
See 141 more reviews

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User experience

🐞

Reported Bugs

3 issues

Keyboard not dimmed

Bug

Videos not properly filtered

Bug

Inconsistent behavior when switching apps

Bug
✨

Requested Features

3 requests

Ability to filter blue light system-wide

Feature

Option to adjust brightness/darkness level

Feature

Support for more search engines beyond Google

Feature

FAQ

What does Koala Browser do?

Koala Browser is a web browser designed to improve your sleep quality. It filters out blue light emitted from your device's screen, which can interfere with melatonin production and disrupt sleep cycles. The app automatically adjusts the display's color temperature to be warmer at night and brighter during the day.

How does the blue light filtering work?

The browser filters out the blue, short-wavelength light that is most suppressive to melatonin production. It makes the color of your display adapt to the time of day, becoming warmer in the evening and at night, and mimicking sunlight during the day. This effect is active only while you are using the app.

Is Koala Browser free to use?

The app is free to download and use, offering core browsing features. However, it does include in-app purchases, suggesting that some advanced features or customization options may require payment.

What are the key features of Koala Browser?

Key features include automatic color temperature adjustment based on local time and sunset/sunrise, a blue light filter, a 'Darkness Boost' for lower brightness at night, the ability to download and view files, private browsing, history, bookmarks, and sharing options.

Who is this app intended for?

This app is for anyone who uses their mobile device for web browsing, especially in the evening or at night, and is concerned about the impact of screen light on their sleep quality and eye strain.