pzizz
Version 3.9.4
12.0 MB
About Twilight Pro Unlock
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 PRO Thank 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/Melatonin http://en.wikipedia.org/wiki/Melanopsin http://en.wikipedia.org/wiki/Circadian_rhythms http://en.wikipedia.org/wiki/Circadian_rhythm_disorder Examples 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…
What Twilight Pro Unlock Is Used For
Twilight Pro Unlock appears to be a companion app for Twilight, focused on adjusting a phone or tablet screen for evening use. Based on the metadata, it is used to reduce blue light exposure after sunset by applying a warmer filter that follows local sunrise and sunset timing. That makes it relevant for people who read, watch content, or use their device late in the day and want the display to be less harsh on the eyes.
Because it sits in the Health & Fitness category and requests permissions like boot completion, wake lock, and system overlay, it likely works as a background screen filter that stays active and can appear over other apps. The description also suggests profile and timing controls in the Pro version, so common use may include setting personalized filter strength or scheduling. As a “Pro Unlock,” this package appears to enable paid features for the Twilight app rather than function as a standalone tool.
Because it sits in the Health & Fitness category and requests permissions like boot completion, wake lock, and system overlay, it likely works as a background screen filter that stays active and can appear over other apps. The description also suggests profile and timing controls in the Pro version, so common use may include setting personalized filter strength or scheduling. As a “Pro Unlock,” this package appears to enable paid features for the Twilight app rather than function as a standalone tool.
Common uses
- May be used to apply a warm screen filter at night
- May help reduce blue light exposure on phones and tablets
- Can be useful for late-evening reading or browsing
- Appears to run in the background and start after reboot
- Likely overlays other apps to adjust the display globally
- May include pro-only timing and profile controls
- Fits phone-based bedtime and night-use routines
App Details
Package:
com.urbandroid.lux.donate
com.urbandroid.lux.donate
Category:
Health & Fitness
Health & Fitness
Developer:
Petr Nálevka (Urbandroid)
Petr Nálevka (Urbandroid)
Version:
2.3
2.3
Updated:
Aug 27, 2025
Aug 27, 2025
Min Android:
4.0
4.0
Age Rating:
Everyone
Everyone
Contains Ads:
No
No
In-App Purchases:
No
No
Official Listing
- Official listing available on Google Play
- Package name: com.urbandroid.lux.donate
- Age rating: Everyone
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How to Download Twilight Pro Unlock
If this app is not hosted directly on APKApps official link, then for the safest and most up-to-date version, install it from its official Google Play listing.