Night Light Screen Filter logo

Night Light Screen Filter for Android

By Elysium Free

Developer's Description

Protego is a quick and easy to use night mode blue light filter and screen dimmer for people who use their devices before they sleep.

Do you use your device before you sleep at night? You will fall in love with this night mode screen filter in no time.

Why do you require a blue light filter and screen dimmer?

- Blue light can have many harmful effects on your brain and body, including but not limited to irritation, insomnia, retinal neuron damage etc.

- We provide quick and easy access to blue light screen filter controls, without the hassle of entering an app. You may control your screen filter from a drop-down right from your home screen. We also provide another dropdown with controls for color temperature and night sleep mode.

Advantages of using Protego blue light screen filter-

Reduce blue light and screen brightness to much less than the stock dimmer

Adjust blue filter intensity

Save battery

Quick and easy controls

Eye protection and overall health benefits for users who frequently use their devices in the dark or before sleep.

Scheduled times for blue light screen filter activation (light filter scheduling may not work on some devices)


Our dimmer can turn down your screen brightness to your needs and it is independent of our blue light filter.

Blue light screen filter

You can slide this bar to pick your screen intensity and color temperature. We save your preferences locally so you don't need to bother with it again

Save battery

Dark modes and night sleep themes have been proven to save battery and our blue light screen filter works in the same way. We have tested battery improvements and have observed that a screen filtering blue light improves it.

Eye protection and health benefits

After using the blue light screen filter you will notice improvements in sleep and eye relief compared to viewing a normal display emitting blue light (even at low brightness).

Scheduled times of screen filter activation

We provide a mechanism to automatically activate the screen filter so you don't need to worry about activating it during the night.

Disclaimer: Recently more devices do not support this feature as it requires background processes to activate as per the scheduled time. Devices with built in battery optimization may attempt to block or override this app. We have provided you with an option to request system permission to exclude this app through the settings, however some devices override this as well. We apologize if the screen filter scheduling does not work on your device but we hope that the quick access through our dropdown will help you access the blue light screen filter as effortlessly as possible.

Relevant studies supporting screen blue light filter-

Effects of blue light technology



Enable dark theme on the screen filter dropdown and adjust the blue light filter intensity during night before you sleep.

Full Specifications

What's new in version 2.1.1


Release August 24, 2019
Date Added August 24, 2019
Version 2.1.1

Operating Systems

Operating Systems Android
Additional Requirements Requires Android 5.0 and up


Total Downloads 7
Downloads Last Week 0
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