Blue Light Filter: Night mode

Contains adsIn-app purchases
610 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
● Built-in screen dimmer
● Caffeine mode

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

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
Apr 24, 2024

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.
This app may share these data types with third parties
Personal info, App info and performance, and Device or other IDs
This app may collect these data types
Personal info, App info and performance, and Device or other IDs
Data is encrypted in transit
Data can’t be deleted

Ratings and reviews

591 reviews
Ian Thorp
May 15, 2023
Was working perfectly until the most recent Android update, now I can't get it to work at all. Every other filter is too weak compared to this one so I really hope it gets fixed. Update: developer says it's getting fixed soon, putting rating at 5 stars in anticipation Edit 2: the problem I'm having is the filter just doesn't turn on at all when I set it to on. Edit 3: it's fixed! Thanks so much. It's hard for me to fall asleep with other apps because they let too much blue light through
26 people found this review helpful
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May 13, 2023
fixes are coming in a day or two 😊 Would you please join Telegram so we can test? This is link to test version:
Richard Hagen
January 2, 2023
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. I use the app every night and it always surprises me how quickly I am ready to sleep when I activate Blue Light Filter, especially as I often didn't realize I was so tired but looking at my phone just kept me awake. This app saved me many hours of sleep!
28 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 !
13 people found this review helpful
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What's new

- Minor UI update
- Code optimization
- Updated libraries