[ROOT] Night Light (KCAL) icon

[ROOT] Night Light (KCAL)

Avinaba Dalal
System
Version
3.0.0
Size
4.5 MB
Requires
Android API 21+
4.5 / 5 · 2,832 ratings 0 downloads

Updated Sep 22, 2026

Quick answer

An app to adjust blue light intensity, powered by KCAL

F-Droid repository metadata

Night light is an open-source app which uses KCAL to adjust blue light intensity of the display colors, so that viewing the screen at dark becomes pleasant for the eyes, and help you fall asleep faster (this is what science have proven so...). Features * Uses KCAL to adjust blue light intensity. * Easy to use color controls. * Color intensities. * Sophisticated automation. * Create and apply profiles with one click. * Tasker plugin integeration. * Great UI. Requirements * Kernel supporting KCAL. * Root access. Permissions * Location - It is used to determine sunset/sunrise times for your location. (Your location info isn't shared, your privacy is maintained) * Internet - It is used to determine approximate location (when exact location is not available) to determine sunset/sunrise times for your location.

Screenshots

[ROOT] Night Light (KCAL) screenshot 1
[ROOT] Night Light (KCAL) screenshot 2
[ROOT] Night Light (KCAL) screenshot 3
[ROOT] Night Light (KCAL) screenshot 4
[ROOT] Night Light (KCAL) screenshot 5
[ROOT] Night Light (KCAL) screenshot 6
[ROOT] Night Light (KCAL) screenshot 7

What’s new

Night Light 3.0 is here!

- Automation got even better with automation routines.
- Set different Nigh Light settings for different time periods using automation routines.
- Have your Night Light settings fade in/out to different settings using automation routines.
- Removed maximum and minimum intensities in favor of automation routines and simplicity.
- Added an option to automatically disable Night Light in lockscreen and automatically turn it back on when the device is unlocked.
- Redesigned

How to install

  1. Download the APK from the button at the top of this page.
  2. Allow “Install unknown apps” for your browser or file manager only, not for every app.
  3. Open the downloaded file and confirm the installation.
  4. If installation fails with “App not installed,” remove an earlier build of the same app first. A signature conflict is the usual cause.

Data safety

  • Every file is checked against its published SHA-256 before it is listed.
  • Files are scanned for malware on every update.
  • The permissions each app requests are listed on its own page.
  • Read the full safety policy for how we test, flag, and delist files.

Comments

Recent approved comments · sorted by newest

Verification code
Be specific and keep it about the app. No links. Comments are reviewed before publication. Device and Android details are recorded automatically. Privacy policy.

Loading recent comments...

View all comments