Twilight Pro Unlock

by Urbandroid (Petr Nálevka)


Health & Fitness

2.99 usd



Protect your healthy sleep

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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.The Twilight app makes your device screen adapt to the time of the day. It filters the blue spectrum on 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.PRO features- more than 2 predefined profiles- adjustable transition time- option to turn off Twilight service altogether during inactive times- new features will often first appear as PROThank you very much for your intention to support our development. This is a pro application for the Twilight app. Please install on top, do not uninstall Twilight first. Please read the basics on circadian rhythm and the role of melatonin:http://en.wikipedia.org/wiki/Melatoninhttp://en.wikipedia.org/wiki/Melanopsinhttp://en.wikipedia.org/wiki/Circadian_rhythmshttp://en.wikipedia.org/wiki/Circadian_rhythm_disorderExamples of 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, Jeanne F. Duffy, Edward J. Silva, Theresa L. Shanahan, Diane B. Boivin, Charles A. Czeisler 2012 Exposure to Room Light before Bedtime Suppresses Melatonin Onset and Shortens Melatonin Duration in Humans Joshua J. Gooley, Kyle Chamberlain, Kurt A. Smith, Sat Bir S. Khalsa, Shantha M. W. Rajaratnam, Eliza Van Reen, Jamie M. Zeitzer, Charles A. Czeisler, Steven W. 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, Richard E. Kronauer, Megan E. Jewett, Charles A. Czeisler 2009 Intrinsic period and light intensity determine the phase relationship between melatonin and sleep in humans Kenneth P. Wright, Claude Gronfier, Jeanne F. Duffy, Charles A. Czeisler 2009 The Impact of Sleep Timing and Bright Light Exposure on Attentional Impairment during Night Work Nayantara Santhi, Daniel Aeschbach, Todd S. Horowitz, Charles A. Czeisler 2008 Short-Wavelength Light Sensitivity of Circadian, Pupillary, and Visual Awareness in Humans Lacking an Outer Retina Farhan H. Zaidi, Joseph T. Hull, Stuart N. Peirson, Katharina Wulff, Daniel Aeschbach & Co 2007 High sensitivity of the human circadian melatonin rhythm to resetting by short wavelength light. Lockley SW, Brainard GC, Czeisler CA. 2003 Sensitivity of the human circadian pacemaker to nocturnal light: melatonin phase resetting and suppression Jamie M Zeitzer, Derk-Jan Dijk, Richard E Kronauer, Emery N Brown, Charles A Czeisler 2000 Phase-shifting human circadian rhythms: influence of sleep timing, social contact and light exposure J F Duffy, R E Kronauer, C A Czeisler 1996 Exposure to bright light and darkness to treat physiologic maladaptation to night work. Czeisler CA..- latest API level support

Read trusted reviews from application customers

Very happy have new phone just review so it stops bugging me for one

Patrick D

I have used this app for many years and love it. Even though Samsung has a blue light filter built in for some time now, I still prefer this app due to the level of customization available.

Samuel Rogers

Awesome. Used it for years. Much better than built in night modes

Austin Swanson

It's a must have. I'd love to see this maintained long-term.

Patrik Krupar

Set and forget... It just works!

Black Dog

जानदार, शानदार एवम मस्त। 🙃

ṩⱺm ġ

Blue light filter is on separate app ? WHY

A

Excellent app! Thanks! Love my rosy colored screen at night. So easy to use the settings too!

Anna Blackburn

Works to keep my eyes and brain as active as I want at night, can use my phone and fall asleep minutes later instead of maybe half an hour later like before I used this app. I've used it for years, and now I have Pro, since I've used it so long.

Trent Calvery

you need to make the Mini-panel that comes up from Notifications: go away by simply pressing the BACK BUTTON.

Just me