Blue Light Filter - Night mode

Contains adsIn-app purchases
387 reviews
Content rating
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About this app

Are you using your smartphone or tablet in the late evening?
Blue Light Filter may be an ideal solution for you!

What is Blue Light Filter?
An app that effectively reduces the amount of blue light emitted from electronic devices by overlaying a translucent filter.
Great for those who use their devices all day long and are feeling fatigued.
It keeps the eyes healthy and helps users achieve comfortable sleep.
Besides the blue light filter, the screen dim feature will reduce the screen brightness to a minimum level as night mode.

Why you should use Blue Light Filter?
Research shows that exposure to blue light imposes serious threats to retinal neurons, causes eye strain, and dry eyes, and inhibits the secretion of melatonin, a hormone that influences circadian rhythms. With our filter function, your vision health will be greatly improved.
It is recommended to turn on this app when you are reading or playing games, especially in a dark room.

● Reduce blue light
● Adjustable filter intensity (Auto/Manual)
● Adjustable color temperature
● Brightness setup
● Schedule
● Save power
● Built-in screen dimmer
● Eye protector from screen light
● Caffeine mode
● Very easy to use

Reduce Blue Light
The screen filter can change your screen into natural color, so it can reduce the blue light which will affect your sleep.

Screen Filter Intensity
Set automatic filter intensity and screen dim based on readings from the light sensor, or do it manually

Adjustable color temperature
Set the filter color temperature in range from 0K till 5000K

Brightness setup
Fine tune the screen brightness including option to enable adaptive brightness

Set the time of starting the filter and also ending it

Save Power
Practice shows it can greatly save power because of reducing screen blue light.

Screen Dimmer
You can adjust your screen brightness accordingly, making the screen even darker than it is. Get better reading experience.

Eye Protector From Screen Light
Screen shift to night mode to protect your eyes and relieve your eyes in no time.

Caffeine mode
Prevents your screen from turning off, ideal for night reading

Why Blue Light Filter uses AccessibilityServices API
Enabling this type of service expands the range of capabilities so screen filter can cover system views such as:
- Status bar
- Navigation bar
- Lock screen

And remove overlay limitations:
- Not allowing app installation

* Since Android 12, accessibility service is needed in order to enable a screen filter.

Enabling this won't allow Blue Light Filter to access your screen content

Help translating:

Relevant Scientific studies
1. Steven W. Lockley, George C. Brainard, Charles A. Czeisler. “High Sensitivity of the Human Circadian Melatonin Rhythm to Resetting by Short Wavelength Light”. J Clin Endocrinol Metab. 2003 Sep;88(9):4502-5.

2. Burkhart K, Phelps JR. “AMBER LENSES TO BLOCK BLUE LIGHT AND IMPROVE SLEEP: A RANDOMIZED TRIAL”. Chronobiol Int. 2009 Dec;26(8):1602-12.

3. ----“Effects of blue lights technology”.

4. “How exposure to blue light affects your brain and body”. Nature Neuroscience; Harvard Health Publications; ACS, Sleep Med Rev, American Macular Degeneration Foundation; European Society of Cataract and Refractive Surgeons; JAMA Neurology
Updated on
Nov 7, 2022

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
No data shared with third parties
Learn more about how developers declare sharing
No data collected
Learn more about how developers declare collection
387 reviews
Richard Hagen
June 30, 2022
Excellent app that offers full options: up to 100% dimming, full range of color temperature etc. In other eye light apps these are often limitated, have to be bought or only work after watching commercials. To the developer: Great job! I have two small points: 1) when the automatic timer is enabled, the on/off button disappears. Sometimes I just want to have the normal screen mode for a very short time 2) the gray blocks about the accessibility are always there, also when this no longer needed
6 people found this review helpful
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July 23, 2022
This is a really good app!! I really like all of the customization I get with it, especially the option that let's you dim the filter beyond the limit that your device has. My only complaint is that you can't adjust or turn it off and on from the notification, you have to go to the app. BUT YEAH, THIS IS GREAT !!!!!!!
2 people found this review helpful
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Ti Rex
June 23, 2022
A very effective and useful app...(Magically) Saved me from the so irriating eye strain... But, please make the color temperature associated with the icons(daytime, night time, lamp, dark etc) customizable.... Suppose, two certain color temperatures (which are not in the icons) work for me and everytime u want to switch between them u have to do it manually. If it could be set with icons or the icon temperature could be customised, it would be lot easier to operate. Thank u !
10 people found this review helpful
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What's new

- Minor fixes and improvements
- Updated dependencies