Twilight: Blue light filter APK - v13.8

420133+ votes, 4.62/5

Filters blue light from your screen, reduces eye strain and helps you sleep... [readmore]


⇣ Download APK (4.03 MB)

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Version 13.8
Update
Size 4.03 MB
Category Health & Fitness
Developer Urbandroid (Petr Nálevka)
Downloads ↓ 12.2M
⇣ Download APK (4.03 MB)

This is an original APK file direct fetch from google play. It is safe to download and free of any virus.

Basic Infos

License type Free
Version 13.8
Size 4.03 MB (4221943)
Filename com.urbandroid.lux_524_4221943.zip
Requirement
Type app
Category Health & Fitness
Package name: com.urbandroid.lux
Slogan: Filters blue light from your screen, reduces eye strain and helps you sleep

App Permissions (inside APK file)


‣ android.permission.SYSTEM_ALERT_WINDOW
‣ android.permission.RECEIVE_BOOT_COMPLETED
‣ android.permission.ACCESS_COARSE_LOCATION
‣ android.permission.ACCESS_NETWORK_STATE
‣ android.permission.GET_TASKS
‣ android.permission.INTERNET
‣ android.permission.WRITE_SETTINGS
‣ android.permission.PACKAGE_USAGE_STATS
‣ android.permission.FOREGROUND_SERVICE
‣ com.urbandroid.lux.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION


Features used


‣ android.software.leanback
‣ android.hardware.touchscreen
‣ android.hardware.location
‣ android.hardware.location.network

Screenshots (19 images)

Twilight: Blue light filter screenshot 1 Twilight: Blue light filter screenshot 2 Twilight: Blue light filter screenshot 3 Twilight: Blue light filter screenshot 4 Twilight: Blue light filter screenshot 5 Twilight: Blue light filter screenshot 6 Twilight: Blue light filter screenshot 7 Twilight: Blue light filter screenshot 8 Twilight: Blue light filter screenshot 9 Twilight: Blue light filter screenshot 10 Twilight: Blue light filter screenshot 11 Twilight: Blue light filter screenshot 12 Twilight: Blue light filter screenshot 13 Twilight: Blue light filter screenshot 14 Twilight: Blue light filter screenshot 15 Twilight: Blue light filter screenshot 16 Twilight: Blue light filter screenshot 17 Twilight: Blue light filter screenshot 18 Twilight: Blue light filter screenshot 19

About Twilight: Blue light filter APK

Twilight: Blue light filter poster
Twilight: Blue light filter APK version 13.8 poster

Latest update


- Wallpaper filter has to be removed on Android 13+ because of https://issuetracker.google.com/issues/237124750
- Fix for watch sync with Wear OS 3+
- Targeting Android 13
- Not filtered screenshots on all Android versions + better status and navbar coloring

Twilight: Blue light filter APK Description


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? Are you sensitive to light during migraine?
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.

You can also use Twilight on your Wear OS device.

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

Accessibility Service

In order to filter also your notifications and lock screen the app may ask for enabling Twilight Accessibility Service. The app uses this service only to better filter your screen and does not collect any personal information. Please read more about this at https://twilight.urbandroid.org/is-twilights-accessibility-service-a-thread-to-my-privacy/

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

How to install Twilight: Blue light filter APK for Android


Download Twilight: Blue light filter APK file (com.urbandroid.lux_524_4221943.zip) from APKPure.live, then follow these steps:

Update Phone Settings

  • Go to your phone Settings page
  • Tap Security or Applications (varies with device)
  • Check the Unknown Sources box
  • Confirm with OK

Go to Downloads

  • Open Downloads on your device by going to My Files or Files
  • Download Split APKs Installer (SAI)
  • Download and unzip file you already downloaded (com.urbandroid.lux_524_4221943.zip)
  • Open Split APKs Installer and follow steps on this app.
  • Tap Install when prompted, the APK file you downloaded will be installed on your device.

How to install Twilight: Blue light filter APK on Windows PC 7/8/10/11 or MAC?


Download Twilight: Blue light filter APK file (com.urbandroid.lux_524_4221943.zip) from APKPure.live to your PC (ex: C://Users/xxx/Downloads/(com.urbandroid.lux_524_4221943.zip), then follow these steps appear on screen.

Using Emulator:

  • Download And Install one Emulator Softwares (Ex: Bluestacks, GenyMotion, NoxPlayer)
  • Download and unzip file com.urbandroid.lux_524_4221943.zip.
  • Using ADB or Split APKs Installer same as install for Android.

Twilight: Blue light filter APK Pros & Cons


Pros
  • This app is safe, it's not require high risk permissions
  • Compatible with 32 bit device (most Emulator using 32bit arch CPU)
  • Compatible with 64-bit device (some android device and current Bluestacks)

Cons
Everything is good.


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