| Developer: | Petr Nálevka (Urbandroid) (30) | ||
| Price: | $4.99 | ||
| Rankings: | 0 | ||
| Reviews: | 0 Write a Review | ||
| Lists: | 0 + 2 | ||
| Points: | 5 + 8,777 (4.8) ¡ | ||
| Google Play | |||
Description
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, 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..
Screenshots
Video
Price
- Today: $4.99
$9.99-50% - Minimum: $0.99
- Maximum: $9.99
Track prices
Developer
- Petr Nálevka (Urbandroid)
- Platforms: Android Apps (30)
- Lists: 13 + 7
- Points: 27 + 1,055,899 ¡
- Rankings: 5 (2)
- Reviews: 0
- Discounts: 4
- Videos: 9
- RSS: Subscribe
Points
-
- 466 kiskis
- +1
-
- 21 Isidoro
- +1
-
- 680 sergey bairack
- +1
-
- 194 克里斯蒂娜
- +1
-
- 641 holy_braveheart
- +1
Rankings
Not found ☹️
Lists
Not found ☹️
Reviews
Be the first to review 🌟
Additional Information
- Version: 2.3
- ID: com.urbandroid.lux.donate
- Category:
Android Apps›Health & Fitness - OS:
Android 4.0 - Size:
14 Mb - Content Rating:
Everyone - Google Play Rating:
4.8(8,777) - Updated:
- Release Date:
Contacts
- Website:
http://twilight.urbandroid.org
«Twilight Pro Unlock» is a Health & Fitness app for Android, developed by «Petr Nálevka (Urbandroid)». It was first released on and last updated on . The previous price was $9.99. Now on sale for $4.99 (50% off). The lowest historical price was $0.99 on , and the highest was $9.99 on . This app has not yet received any ratings or reviews on AppAgg. AppAgg has tracked 5 confirmed downloads plus 8,777 indirect launches for this app. On Google Play, the current store rating is 4.8 based on 8,777 votes. AppAgg continuously tracks the price history, ratings, and user feedback for «Twilight Pro Unlock». Subscribe to this app or follow its RSS feed to get notified about future discounts or updates.
You may also like
-
- Twilight: Blue light filter
- Android Apps: Health & Fitness By: Petr Nálevka (Urbandroid)
- Free
- Lists: 0 + 2 Rankings: 5 (1) Reviews: 0
- Points: 2 + 437,496 (4.6) Version: New 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 ... ⥯
-
- Sweatcoin・Walking Step Counter
- Android Apps: Health & Fitness By: Sweatco Ltd
- * * Free
- Lists: 1 + 1 Rankings: 5 (1) Reviews: 0
- Points: 4 + 2,431,700 (4.2) Version: 217.0.2 Step up your fitness game with Sweatcoin! Looking for a fun way to boost your fitness & get rewarded? Sweatcoin, the viral walking app is here to transform your steps into real-world ... ⥯
-
- NoiseFit: Health & Fitness
- Android Apps: Health & Fitness By: Noise
- * Free
- Lists: 0 + 0 Rankings: 0 Reviews: 0
- Points: 0 + 2,063,216 (4.4) Version: 4.8.9 The one-stop app for all your athletic and health tracking needs; paves the way to supreme fitness with the NoiseFit App. Sync your Noise smartwatch (watch collection: ... ⥯
-
- Clue Cycle & Period Tracker
- Android Apps: Health & Fitness By: Clue Period Tracker by BioWink
- * Free
- Lists: 2 + 1 Rankings: 5 (1) Reviews: 0
- Points: 1 + 1,385,153 (4.4) Version: 218.0 Clue Period & Ovulation Tracker is a science-packed health and period tracker designed to decode your menstrual cycle in every life stage from your first period to hormonal changes, ... ⥯
-
- Fitbit
- Android Apps: Health & Fitness By: Google LLC
- * Free
- Lists: 0 + 1 Rankings: 5 (1) Reviews: 0
- Points: 4 + 1,204,676 (4.1) Version: New See the big picture on your health and fitness journey with the Fitbit app. Find easy ways to get active, sleep better, stress less and eat healthier. Track the stats you care about ... ⥯
-
- Nike Run Club - Running Coach
- Android Apps: Health & Fitness By: Nike, Inc.
- Free
- Lists: 0 + 0 Rankings: 5 (1) Reviews: 0
- Points: 1 + 1,098,333 (4.2) Version: New Training Plans*, Guided Runs**, health and fitness tips or community challenges run towards your goals with all the tools you need. Run the distance with the support of Nike coaches, ... ⥯
-
- YAZIO: AI Calorie Tracker
- Android Apps: Health & Fitness By: YAZIO
- * * Free
- Lists: 2 + 0 Rankings: 0 Reviews: 0
- Points: 3 + 693,255 (4.6) Version: New Welcome to YAZIO, the most effective AI calorie tracker, intermittent fasting app and food tracker for losing weight without dieting! ️ ️ ️ ️ ️ Rated 4.6 stars based on 300,000+ ... ⥯
-
- Fabulous Daily Routine Planner
- Android Apps: Health & Fitness By: TheFabulous
- * Free
- Lists: 0 + 0 Rankings: 0 Reviews: 0
- Points: 1 + 580,211 (4.1) Version: 13.0 Welcome to the world of Fabulous. Unlock the power of habits and routines. Prioritize your mental health, build healthy habits and improve your life one step at a time. Fabulous ... ⥯
-
- Map My Run GPS Running Tracker
- Android Apps: Health & Fitness By: MapMyFitness, Inc.
- * * Free
- Lists: 2 + 1 Rankings: 0 Reviews: 0
- Points: 3 + 447,581 (4.8) Version: 25.7.1 Map My Run: Your Ultimate Running Tracker App, Built for All Runners Take your running to the next level with the most complete Running Tracker app. Whether you're a beginner starting ... ⥯
-
- Fastic AI Food Calorie Tracker
- Android Apps: Health & Fitness By: Fastic GmbH
- * Free
- Lists: 0 + 0 Rankings: 0 Reviews: 0
- Points: 2 + 419,474 (4.4) Version: 1.224.4 TRANSFORM YOUR HEALTH JOURNEY WITH THE FASTIC AI FOOD SCANNER Unlock your weight loss journey with Fastic the Fastic AI Food Tracker, the app that tailors nutrition to fit YOUR ... ⥯
-
- BodyFast: Intermittent Fasting
- Android Apps: Health & Fitness By: BodyFast GmbH
- * Free
- Lists: 0 + 0 Rankings: 0 Reviews: 0
- Points: 1 + 354,542 (4.7) Version: 3.48.3 We ️ fasting More than 50 million people worldwide use BodyFast for intermittent fasting. BodyFast guides you on your journey to success. Reach your goal weight, get healthy and feel ... ⥯
-
- Motivational Quotes - Daily
- Android Apps: Health & Fitness By: Motivational Soul
- * Free
- Lists: 0 + 0 Rankings: 0 Reviews: 0
- Points: 0 + 299,274 (4.7) Version: 11.7 ️ Motivational Quotes - Daily: Inspire, Empower, and Thrive Unleash your motivation and conquer every day with Motivational Quotes - Daily, the ultimate app for personal growth, mental ⥯
-
- Workout Planner Gym Log・Fit AI
- Android Apps: Health & Fitness By: Social Tech Inc
- * Free
- Lists: 0 + 0 Rankings: 0 Reviews: 0
- Points: 5 + 240,418 (4.7) Version: 1.4.9 Get fit and start 2025 with our "New Year, New You" Campaign for a 70% discount! FitAI is launching the "New Year, New You" campaign for 2025, designed to help you achieve your New ... ⥯
-
- Muscle Booster Workout Planner
- Android Apps: Health & Fitness By: WELLTECH APPS LIMITED
- * Free
- Lists: 0 + 0 Rankings: 0 Reviews: 0
- Points: 0 + 242,832 (4.5) Version: 3.54.0 Muscle Booster is a workout app designed for both men and women who want to build muscle, stay healthy, and feel great. Our Workout Planner acts as a personal trainer alternative, ... ⥯