Twilight: Blue light filter Apk
Latest version 14.0
09 Jul 2024
Apk Infos
| Version | 14.0 |
| Rating | 4.6/5, based on 421,639 votes |
| Size | 13.3 MB |
| Requires Android | Android 5.0+ (Lollipop) |
| Author's Notes | Filters blue light from your screen, reduces eye strain and helps you sleep |
About Twilight: Blue light filter APK
Table Of Contents
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/
Wear OS
Twilight also syncs your Wear OS screen with your phone's filter settings. You can control filtering from a "Wear OS Tile".
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
Latest updates
What's new in version 14.0
- Proper Wear OS 3+ support + Wear OS TileHow to install Twilight: Blue light filter APK on Android phone or tablet?
Download Twilight: Blue light filter APK file from ApkClean, 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
- Tap the APK file you downloaded (com.urbandroid.lux-v14.0-ApkClean.apk)
- Tap Install when prompted, the APK file you downloaded will be installed on your device.
Older Versions
| 14.0 (541) | 13.3 MB |
| 14.0 (540) | 13.3 MB |
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User's Reivew
5 ★Has helped with using all our devices in the evening and early mornings. Including helping with my migraines as I use my phone to listen to podcasts at bedtime, and helping reduce blue light exposure for my children who listen to audiobooks
4 ★A very handy app when using for low light moments. I just don't understand why the volume box isn't dimmable, evertime I raise or lower the phone's volume, BANG! Instantly blinded.
5 ★Great app, particularly when you wake up at 2 or 3 in the morning and read to fall back to sleep. Easy on the eyes.
5 ★App features and functions are perfection. Long time user here. Every night, for the past few years, Twilight has helped me read myself to sleep in comfort. Thank you, dev team.
5 ★Does a good job of dimming the screen. Easy to set up. Very configurable. Best app i've found for this purpose.
4 ★Great app. If I dont turn this app on at night I dont get tired. Only downside is the app turns off at 12:28am every night.
5 ★With the update that now enables the app to veil itself over the notification bar, this is the perfect screen-dimming, blue-light-filtering tool
5 ★Blue light filter makes it easier to sleep and the settings can be adjusted to have opposite effect too. It's really working very well for me. Thanks
3 ★I used this filter app for mobile viewing in the night for about 1 hour but my eyes are still hurting. Red color of filter is making my eyes hurt. Some cool colors should be there.
5 ★Love this app, been using this for years. No complaints about any of it. Has no ads.
5 ★Its a nice app and has helped me to sleep faster during the night and overall I'd recommend it to anyone who struggles with sleep 👍👍👍
4 ★Useful app. Does more than a blue light filter alone. Helps reduce my eye strain and my difficulty failing asleep if I use my phone late at night.
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