CF.lumen

Name: CF.lumen
Rating: 3.91 (5112 reviews)
Author: Chainfire

By: Chainfire

Adapts your screen's colors based on sun's position, sleep pattern, and sensors

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Features & Capabilities

CF.lumen is a versatile Chrome extension that dynamically adapts your screen's colors according to the sun's position, your sleep patterns, and ambient light sensors. By applying warmer tints during evening hours and red filters during sleep times, it minimizes blue light exposure, greatly reducing eye strain and promoting healthier sleep cycles.

This extension features customizable color filters including grayscale, invert colors, and adjustments for colorblindness enhancement, ensuring a comfortable viewing experience for all users. The Pro version unlocks additional features such as starting on device boot, Tasker integration, and enhanced notification controls. Designed to be mindful of performance, CF.lumen ensures minimal impact when filters are inactive, making it an essential tool for improving screen comfort throughout the day and night.

User Growth & Download Statistics

App

By:

Downloads:

Rating:

Version:

3.74 Last updated: 2020-12-22

Creation date:

2014-04-10

Publisher country:

Email:

pl*****@chainfire.eu

URLs:

Website ,Privacy policy

Full description:

Source:

Google Play Store

Data ingested on:

2026-07-04

Compare stats and ranking:

Ranking

# 114,648 ▼ 289

For Developers

Monetize with App Pass Boost with Extension Booster

Contact the developer

Chrome-Stats does not own this Android app. Please use these information below to contact the Android app developer.

Developed by:

Chainfire

Google Play Store

https://play.google.com/store/apps/details?id=eu.chainfire.lumen

Email:

pl*****@chainfire.eu

Website:

http://www.chainfire.eu/

User Reviews

CF.lumen offers rich color and eye-care filtering, with red overlay, grayscale, and RGB controls. It shines on rooted devices, plus strong automation and a long-standing customization focus. However, its reliance on root, fingerprint compatibility with overlays, automation instability, and limited support for newer Android versions pose recurring issues for many users.

Pros

Deep color control with red overlay, grayscale, and precise RGB value changes.
Excellent on rooted devices; many users call it perfect with root and essential for their setup.
Automation features including auto start/stop and time/location-based activation.
Eye-care / blue-light filtering with strong customization; widely praised as one of the best options.
Thoughtful, well-crafted app with a solid feature set and apparent developer attention.

Cons

Requires root; non-rooted (rootless) operation is not supported on Android 10+ and may not work on many devices.
Overlay can interfere with in-screen fingerprint scanners, causing recognition issues.
Automation can be unstable—crashes, turns on too bright, or fails to turn off as expected.
Compatibility issues with newer Android versions (Android 14+, and older root-dependent changes).
Some users report performance slowdowns on certain devices when the filter is active.

Recent reviews

this App is perfect astronomy telescope research give me a dark red glow on my Galaxy S5 rooted phon andu Galaxy S4 pitch perfect 4 being out with my telescop and any photographer who still does dark room (old school photography dark room film developing and printing the effects he's excellent for the dark room phone must be rooted and it's worth it Paul H