6 Best Android Brightness App

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If you are looking for the Best Android Brightness App to download for free, look no further.

Our expert panel of reviewers has tested dozens of apps and we have compiled a list of the 6 Best Android Brightness App that passed our tests.

Check out our list of the 6 Best Android Brightness App, tried and tested by our expert reviewers.

6 Best Android Brightness App

1. CF.lumen

Download the App on the Google Store by clicking this Button
“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″

2. Twilight: Blue light filter

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“Are you having trouble falling asleep? Are your kids hyperactive when playing with the tablet before bed time?
Are you using your smart phone or tablet in the late evening? Twilight may be a solution for you!

Recent research suggests that exposure to blue light before sleep may distort your natural (circadian) rhythm and cause inability to fall asleep.

The cause is the photoreceptor in your eyes, called Melanopsin. This receptor is sensitive to a narrow band of blue light in the 460-480nm range which may suppress Melatonin production – a hormone responsible for your healthy sleep-wake cycles.

In experimental scientific studies it has been shown an average person reading on a tablet or smart phone for a couple of hours before bed time may find their sleep delayed by about an hour. See references below..

The Twilight app makes your device screen adapt to the time of the day. It filters the flux of blue light emitted by your phone or tablet after sunset and protects your eyes with a soft and pleasant red filter. The filter intensity is smoothly adjusted to the sun cycle based on your local sunset and sunrise times.

Documentation
http://twilight.urbandroid.org/doc/

Get more from Twilight
1) Bed reading: Twilight is more pleasant on the eyes for night reading. Especially as it is able to lower the screen backlight far below the ability of the backligt controls on your screen

2) AMOLED screens: We have tested Twilight on an AMOLED screen for 5 years without any sign of depletion or over-burning. If properly configured Twilight causes less light emission (by enabling dimming) with more equal light distribution (dark areas of the screen such as the status bar get tinted). This may in fact increase your AMOLED screen life time.

Basics on circadian rhythm and the role of melatonin
http://en.wikipedia.org/wiki/Melatonin
http://en.wikipedia.org/wiki/Melanopsin
http://en.wikipedia.org/wiki/Circadian_rhythms
http://en.wikipedia.org/wiki/Circadian_rhythm_disorder

Permissions
– location – to find out your current sunset/surise times
– running apps – to stop Twilight in selected apps
– write settings – to set back-light
– network – access smartlight (Philips HUE) to shield you household light from blue

Automation (Tasker or other)
https://sites.google.com/site/twilight4android/automation

Related scientific research

Amplitude Reduction and Phase Shifts of Melatonin, Cortisol and Other Circadian Rhythms after a Gradual Advance of Sleep and Light Exposure in Humans Derk-Jan Dijk, & Co 2012

Exposure to Room Light before Bedtime Suppresses Melatonin Onset and Shortens Melatonin Duration in Humans Joshua J. Gooley, Kyle Chamberlain, Kurt A. Smith & Co, 2011

Effect of Light on Human Circadian Physiology Jeanne F. Duffy, Charles A. Czeisler 2009

Efficacy of a single sequence of intermittent bright light pulses for delaying circadian phase in humans Claude Gronfier, Kenneth P. Wright, & Co 2009

Intrinsic period and light intensity determine the phase relationship between melatonin and sleep in humans Kenneth P. Wright, Claude Gronfier & Co 2009

The Impact of Sleep Timing and Bright Light Exposure on Attentional Impairment during Night Work Nayantara Santhi & Co 2008

Short-Wavelength Light Sensitivity of Circadian, Pupillary, and Visual Awareness in Humans Lacking an Outer Retina Farhan H. Zaidi & Co, 2007

High sensitivity of the human circadian melatonin rhythm to resetting by short wavelength light. Lockley SW & Co. 2003

Sensitivity of the human circadian pacemaker to nocturnal light: Jamie M Zeitzer, Derk-Jan Dijk & Co 2000″

3. Night screen

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Night screen main goal is to reduce the brightness of your screen lower than you can achieve with the default settings. This application applies an overlay filter that acts as a dimmer to darken the screen. It helps to avoid headache and eye pain in a dark environment or at night 🕶️

Features:
– easy to use 💡
– can automatically set default brightness settings in Android to the minimum 📱
– restore default brightness settings after stop the app 🔧
– keep the screen on while the app is running 📗 (optional)
– amazing blue light filter to help you have a better sleep ❤️ (optional)
– supports dimming the transparent navigation bar in Android 4.4 and higher 🔅
– extra-content: auto-enable & disable feature and one-click widget ⏰

How to make it work on Xiaomi phones : go to Settings – Apps – this app – allow popup

4. Screen Filter

Download the App on the Google Store by clicking this Button
“Applies a shade that acts as a dimmer to ensure your eyes don’t hurt. Far more powerful than Android’s built-in brightness setting. Great for low-light gaming, web browsing, and eBook reading. It even saves battery life for AMOLED displays!

More features:
– Widgets: Easy access to preset brightness levels.
– Tasker/Locale Plug-in! Set brightness based on time/place/etc. To disable, configure for 100% brightness.
– Brightness slider uses logarithmic scale for fine-grained control.
– Drag the app icon to your desktop to use for toggling on/off.
– Prompts to confirm very low brightness settings.
– Option to disable soft-key backlight (does not work on all phones).

NOTE:
*** If you accidentally make your screen go BLACK ***
1. Pull your battery or (Nexus7) hold power button for 10 seconds
2. Uninstall the app to reset your bad brightness setting
3. Reinstall the app and use it normally again

This app will always be free! If you want to show your appreciation, please donate to Wikipedia on my behalf (and let me know you did):

https://donate.wikimedia.org

Thank you! Email me if you have any other problems or questions I haven’t mentioned.”

5. Lower Brightness Screen Filter

Download the App on the Google Store by clicking this Button
Have you ever set the screen brightness to the lowest but it still so bright?
If you feel the screen is so bright and you want to reduce it. You need this application called “Lower Brightness”.
“Lower Brightness” application helps you reduce brightness to any level. You can set brightness level from 0% to 100% by just opening the application and choose brightness level you want.

Features
– Reduce screen brightness below the system minimum brightness
– Easy to use. Just enable and set the percent of brightness level (0-100%)
– Auto start after reboot
– Brightness icon on top notification bar (select notification bar to open brightness app setting)
– Easy to use. Just choose percent of brightness you want to set.
– Small size of application.
– Also support devices that have the navigation bar on the screen.(home/back button at the bottom of the screen)
– Ask for permission in android 6.0+

6. Brightness

Download the App on the Google Store by clicking this Button
“You only need one touch to change current display brightness to one of the predefined values or select the “Auto” mode, if device has a light sensor.

Press and hold any of the buttons to change their values.

This app only needs single permission – to modify device settings. No ads, no “read your sms” or other malware. Brightness app does only one thing – changes brightness.”