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Twilight MOD APK 13.3 build 500 (Pro)

Twilight: Blue light filter
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Twilight: Blue light filterTwilight: Blue light filterTwilight: Blue light filterTwilight: Blue light filterTwilight: Blue light filter

The continuous use of Android smart devices before going to sleep causes problems for users, one of which can be considered as disrupting the sleep order! The main cause of this irregularity is the blue light of the screen, which affects the eye nerves and reduces the hormone that regulates sleep. Until now, various ways have been presented to solve such a problem, one of the best of which can be considered blue light filters. Twilight: Blue light filter PRO is the title of a smart blue light filter for Android screen, developed by Urbandroid (Petr Nálevka) and published on Google Play. With the benefit of its various facilities and capabilities, this startup allows you to put a filter on the screen at any hour of the day and night and be sure that the effects of blue light on your eyes will be minimized. By reducing blue light to the minimum possible, this filter once again helps the body adjust the sleep hormone and avoid problems such as burning or eye pain. The filter created on the screen is in red, which has the best effect on reducing blue light.

Some features of the Twilight: Blue light filter Android program:

Screen blue light filter at any hour of the day or night
Reducing eye problems when using smartphones
Red color filter with maximum effect in blocking blue lights
Automatic adjustment of the intensity of the filter based on the time of sunrise and sunset
Turn on the filter with just one gesture
Very simple and easy user interface

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

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

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

Twilight: Blue light filter
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