# Koala Browser - Sleep Better — Sleep Better and Browse Web

> Web browser that filters blue light to improve sleep quality. (iPhone/iPad app by AppRebel, Inc..)

- Source: https://appshunter.io/ios/app/koala-browser-sleep-better/id788474204 (this page in markdown: same URL + `.md`)
- Developer: [AppRebel, Inc.](https://appshunter.io/developer/1227876283)
- Category: Productivity, Utilities
- Price: Free with in-app purchases
- Rating: 2.90/5 from 284 App Store ratings · 208 written reviews indexed
- Age rating: 17+
- Requires: iOS 8.0 · 20 MB
- Languages: American English, French (France), German (Germany), Italian, Japanese, Korean, Russian, Chinese (Simplified, China), European Spanish
- Released: 2014-02-19
- Data updated: 2026-08-26
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/koala-browser-sleep-better/id788474204/reviews.md

## What is Koala Browser?

Sleep better with Koala™! A faster web browser with downloads, that improves the quality of your sleep! 

Research has demonstrated that nighttime light exposure suppresses the production of melatonin, the major hormone that controls sleep and wake cycles. The "blue", short-wavelength light is the most melatonin-suppressive, and is also emitted by devices such as televisions, computer screens, and cellphones.

(Note: Koala dimming effect only works while inside the app!)

The Koala™ Web Browser filters out the blue light to create a healthy, energizing sleep cycle. It is the first web browser that cares about your sleep quality! Koala™ makes the color of your iDevice display adapt to the time of day, warm at night and like sunlight during the day. All automatically!

FEATURES
* Automatically adjust the color temperature depending on your local time and sunset/sunrise times
* DOWNLOAD and view files!
* Darkness Boost for lower brightness during the night
* Multiple browser tabs
* Private browsing
* History and Bookmarks
* Sharing to Twitter, Facebook, Email, Text, WhatsApp etc
* Select search engine (Google, Yahoo!, Bing, DuckDuckGo)
* More features coming soon!

## Key features

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

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Remove Ads | $2.99 | one-time |


## What do users think of Koala Browser?

Overall sentiment: negative

**Pros**

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

**Cons**

- 🐛 Crashes and freezes
- 🔋 Drains battery
- 💸 Excessive ads
- 🔒 Limited to browser only

**Commonly reported bugs**

- Keyboard not dimmed
- Videos not properly filtered
- Inconsistent behavior when switching apps

**Most requested features**

- Ability to filter blue light system-wide
- Option to adjust brightness/darkness level
- Support for more search engines beyond Google

## Recent user reviews (10 of 208)

All indexed reviews: https://appshunter.io/ios/app/koala-browser-sleep-better/id788474204/reviews.md

### 1/5 — 아니 광고가...

*2023-11-26, version 7.4*

새로고침 했더니 광고가... 별 1개도 아깝다.

### 2/5 — Pointless

*2023-10-07, version 7.4*

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!

### 4/5 — Works! Not perfect

*2023-08-31, version 7.4*

Keyboard still not yellow

### 1/5 — ужасный

*2023-04-18, version 7.4*

одни минусы 
1 разные цвета нет естественного 
2 горите вы что он бесплатный а сами снимайте 75 рублей
вы ужасные лучше удалите и пиределайти

### 1/5 — It’s a browser app

*2022-10-12, version 7.4*

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.

### 4/5 — No está mal, pero…

*2022-09-02, version 7.4*

El filtro naranja tiene mejor intensidad que el del mismo Night Shift, mas queda claro que la atención de las personas no sólo está en el navegador, sino en las redes y en general.

### 1/5 — Google only

*2021-05-14, version 7.4*

Only works with Google. Does not work beyond that.

### 2/5 — I can’t delete my search history.

*2021-03-09, version 7.4*

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.

### 1/5 — Pretty useless

*2021-02-02, version 7.4*

It’s a bit pointless I thought it was for the whole thing but it’s for a browser. Good concept but useless on just a browser

### 1/5 — Remove

*2021-01-29, version 7.4*

I want to remove this app

## Frequently asked questions about Koala Browser

### 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.

## Version history (last 5 releases)

### 7.4 — 2020-07-08

-Bug fixes
-Fixed some UI issues

### 7.3 — 2019-04-24

-Fix to make sure in-app purchase removes all ads
-General bug fixes

### 7.2 — 2019-02-28

Bug fixes and performance speedups

### 7.1 — 2017-06-12

- Bug fixes and updates to downloads feature
- Night mode now active while viewing downloaded files

### 7.0 — 2017-05-19

Download folder! Now you can download files directly from the web!

## Apps similar to Koala Browser

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [Darker - Dark Mode for Safari](https://appshunter.io/ios/app/darker-dark-mode-for-safari/id1637413102) | 4.2 (1,246) | Free | Productivity |
| [Flashlight \| Night Light](https://appshunter.io/ios/app/flashlight-night-light/id311613693) | 4.5 (3,079) | Free | Productivity |
| [Dark Web Browser](https://appshunter.io/ios/app/dark-web-browser/id1537992356) | 1.0 (2) | Free | Productivity |
| [Command Browser](https://appshunter.io/ios/app/command-browser/id1485289520) | 4.6 (138) | Free | Productivity |
| [Browser - Fast, Safe, Private](https://appshunter.io/ios/app/browser-fast-safe-private/id1641074608) | 4.1 (16) | Free | Productivity |
| [Cydog Browser](https://appshunter.io/ios/app/cydog-browser/id1563014942) | 3.7 (10) | Free | Productivity |

## More apps by AppRebel, Inc.

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- [World Currency Converter FOREX](https://appshunter.io/ios/app/world-currency-converter-forex/id628614469)
- [Car Loan Calculator Plus](https://appshunter.io/ios/app/car-loan-calculator-plus/id686704188)
- [Loan Calculator Professional](https://appshunter.io/ios/app/loan-calculator-professional/id689683807)
- [Debt Payoff Plan Calculator](https://appshunter.io/ios/app/debt-payoff-plan-calculator/id900287289)

All apps by AppRebel, Inc.: https://appshunter.io/developer/1227876283

## Related topics

[sloths browser](https://appshunter.io/ios/topics/sloths-browser) · [coala](https://appshunter.io/ios/topics/coala) · [blue light filter for nighttime browsing](https://appshunter.io/ios/topics/blue-light-filter-for-nighttime-browsing)

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-26.*