CF.lumen
8.2 431
v3.74 by Chainfire
About CF.lumen
CF.lumen (Package Name: eu.chainfire.lumen) is developed by Chainfire and the latest version of CF.lumen 3.74 was updated on December 22, 2020. CF.lumen is in the category of Tools. You can check all apps from the developer of CF.lumen and find 89 alternative apps to CF.lumen on Android. Currently this app is for free. This app can be downloaded on Android 5.0+ on APKFab or Google Play. All APK/XAPK files on APKFab.com are original and 100% safe with fast download.
CF.lumen adapts the colors on your Android device based on the position of the sun, or your custom configuration.
NOTE: Android 5.0 is now required. Versions up to v3.16 that support 4.4 KitKat are still available from the XDA thread (see far below). Performance drop since v3.60? Turn on performance mode.
When using the default settings, your display will get a warmer tint (lower color temperature) when the sun is down, vastly reducing strain on the eyes. Blue light makes your brain want to stay awake, and a lower color temperatures reduces the amount of blue displayed; using this in the evening reduces your brain's effort to keep you awake at night.
During sleeping hours by default a red filter is used. Red strains your eyes the least, and retains your night vision.
Light sensor
The light sensor can be used to automagically adjust the color: switch to the sleep filter in full dark, or to the day filter (usually none) under bright lights.
Because light sensor quality varies wildly between devices, a calibration option is provided to experiment with.
Color filters
Several filters are provided. Those named after a color (red, green, blue, ...) do not limit the display to those colors, but convert the displayed image to grayscale first, then display that image in levels of the selected color. This preserves details that would otherwise be lost.
Grayscale, invert colors, temperature adjustment and custom R/G/B adjustment filters are also provided.
Colorblindness
The master color filter setting also has an option for colorblindness enhancement, with settings for protanopia/anomaly, deuteranopia/anomaly and tritanopia/anomaly. These options in theory enhance clarity and color detail.
No claims are made to the effectiveness of these filters. These filters were thought up by Google engineers, CF.lumen just includes them.
Pro version
Upgrading to CF.lumen Pro will support my developments, remove all nags, unlock the option to start at device boot (make sure you test your configuration first), and unlocks notification options. It also enables Tasker integration.
In Pro mode, the notification adds convenient buttons to quickly disable the current filter or switch to sleep mode, and you can switch the notification to when enabled mode, which shows the notification only when a color filter is active.
In non-Pro mode, the notification only asks you to upgrade to Pro. It may seem that notification is just there to annoy you, but it actually prevents Android from randomly killing the background service taking care of all the work. Getting rid of it without getting the service killed can be done by going to Settings -> Apps -> CF.lumen and unticking Show notifications.
Having Chainfire3D Pro (ancient) installed will enable Pro.
Performance
When no color filter is active, there should not be any noticeable performance impact. When a filter is active, impact depends on device and what you are doing. On some devices we have tested there was no performance impact at all, on others it was slightly noticeable. It also depends on the driver in use.
Future
Keep in mind that Android's rendering system changes over time. You should be aware that this app may simply stop working on future Android versions without the possibility of a fix.
Scary permissions
By far most permissions are used only for Google Maps to set your location, and Google Play to provide for In-App Purchases. I cannot make any claims as to what information the Google components do or do not send to Google servers, but no information is sent to me or anyone else (than Google).
More
Advanced user more information, discussion, and support, can be found in this app's thread on XDA-Developers: http://forum.xda-developers.com/showthread.php?p=51779367
NOTE: Android 5.0 is now required. Versions up to v3.16 that support 4.4 KitKat are still available from the XDA thread (see far below). Performance drop since v3.60? Turn on performance mode.
When using the default settings, your display will get a warmer tint (lower color temperature) when the sun is down, vastly reducing strain on the eyes. Blue light makes your brain want to stay awake, and a lower color temperatures reduces the amount of blue displayed; using this in the evening reduces your brain's effort to keep you awake at night.
During sleeping hours by default a red filter is used. Red strains your eyes the least, and retains your night vision.
Light sensor
The light sensor can be used to automagically adjust the color: switch to the sleep filter in full dark, or to the day filter (usually none) under bright lights.
Because light sensor quality varies wildly between devices, a calibration option is provided to experiment with.
Color filters
Several filters are provided. Those named after a color (red, green, blue, ...) do not limit the display to those colors, but convert the displayed image to grayscale first, then display that image in levels of the selected color. This preserves details that would otherwise be lost.
Grayscale, invert colors, temperature adjustment and custom R/G/B adjustment filters are also provided.
Colorblindness
The master color filter setting also has an option for colorblindness enhancement, with settings for protanopia/anomaly, deuteranopia/anomaly and tritanopia/anomaly. These options in theory enhance clarity and color detail.
No claims are made to the effectiveness of these filters. These filters were thought up by Google engineers, CF.lumen just includes them.
Pro version
Upgrading to CF.lumen Pro will support my developments, remove all nags, unlock the option to start at device boot (make sure you test your configuration first), and unlocks notification options. It also enables Tasker integration.
In Pro mode, the notification adds convenient buttons to quickly disable the current filter or switch to sleep mode, and you can switch the notification to when enabled mode, which shows the notification only when a color filter is active.
In non-Pro mode, the notification only asks you to upgrade to Pro. It may seem that notification is just there to annoy you, but it actually prevents Android from randomly killing the background service taking care of all the work. Getting rid of it without getting the service killed can be done by going to Settings -> Apps -> CF.lumen and unticking Show notifications.
Having Chainfire3D Pro (ancient) installed will enable Pro.
Performance
When no color filter is active, there should not be any noticeable performance impact. When a filter is active, impact depends on device and what you are doing. On some devices we have tested there was no performance impact at all, on others it was slightly noticeable. It also depends on the driver in use.
Future
Keep in mind that Android's rendering system changes over time. You should be aware that this app may simply stop working on future Android versions without the possibility of a fix.
Scary permissions
By far most permissions are used only for Google Maps to set your location, and Google Play to provide for In-App Purchases. I cannot make any claims as to what information the Google components do or do not send to Google servers, but no information is sent to me or anyone else (than Google).
More
Advanced user more information, discussion, and support, can be found in this app's thread on XDA-Developers: http://forum.xda-developers.com/showthread.php?p=51779367
CF.lumen 3.74 Update
Bare minimum(!) to somewhat support rooted users on Android 11. Rootless and injection driver have been removed as they are currently incompatible.
Read More
CF.lumen Features
Related Videos
Previous Versions More
CF.lumen
3.74
APK
December 27, 2020
1.16 MB
Requires Android: Android 5.0+
Architecture: arm64-v8a, armeabi, armeabi-v7a, mips, mips64, x86, x86_64
Screen DPI: 160-640dpi
SHA1: efdd4a558593e1a3711b2c3fc44be80b9b394643
Size: 1.16 MB
What's New:
Bare minimum(!) to somewhat support rooted users on Android 11. Rootless and injection driver have been removed as they are currently incompatible.
CF.lumen
3.70
APK
February 10, 2017
1.88 MB
Requires Android: Android 5.0+
Screen DPI: 160-640dpi
SHA1: 9e5841be3fc5d7d0910451f08aa1ce668bc1d24c
Size: 1.88 MB
What's New:
CF.lumen driver now also works in Performance mode on various Nougat devices, and the grayscale filter has been upgraded from a toggle to saturation slider.
CF.lumen
3.66
APK
March 31, 2016
1.87 MB
Requires Android: Android 5.0+
Screen DPI: 160-640dpi
SHA1: 365d48c09adec674b11a7a2795847b761d98bfe5
Size: 1.87 MB
What's New:
Please see the release notes here: https://plus.google.com/+Chainfire/posts/LxEzjU9fQHr
If you are having performance issues since last update, try changing the driver mode from "compatibility" to "performance".
Flashing the original colors and the filter disappearing may also be fixed by this.
CF.lumen
3.65
APK
March 1, 2016
1.87 MB
Requires Android: Android 5.0+
Screen DPI: 160-640dpi
SHA1: 47f68e914088ef707870b39e2ac8a229b9e2a2ee
Size: 1.87 MB
What's New:
Please see the release notes here: https://plus.google.com/+Chainfire/posts/LxEzjU9fQHr
If you are having performance issues since last update, try changing the driver mode from "compatibility" to "performance".
Flashing the original colors and the filter disappearing may also be fixed by this.
More Information
Package Name:
Update Date:
2020-12-22
Latest Version:
3.74
Need Update:
Available on:
Requirements:
Android 5.0+
Report:
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