Twilight 2.95 APK

Twilight 2.95 APKTwilight 2.95 APK
500,000 - 1,000,000
Current Version
Requires Android
2.1 and up

Description Twilight 2.95 APK
Are you having troubles to fall 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.
Please read the basics on circadian rhythm and the role of melatonin:
Permissions explained:
- location - to find out your current sunset/surise times
- running apps - to stop Twilight in selected apps
- write settings - to set back-light
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, Joshua J. Gooley, George C. Brainard, Kevin Gregory-Evans, Joseph F. Rizzo, III, Charles A. Czeisler, Russell G. Foster, Merrick J. Moseley, Steven W. Lockley. 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
Search for more evidence in many scientific articles and empirical studies online. Keywords: Circadian, Melatonin, Melanopsin, Light, Wavelength...
Similar to f.lux on Windows or Red Shift on Linux.
New Features Twilight 2.95 APK
- refresh button for current location (thanks to David Boca)
- Italian translation
- Introductory video link under tutorial
- Croatian translation (many thanks to David)
- Official sunset/sunrise times instead of civil (civil optional)
- Setting profiles - configure multiple profiles such as: Bed reading and switch between them
- Widget supports profile switching
- Fix for checkbox problem and slow loading in excluded app list
- Experimental Sleep as Android integration...

Twilight - screenshot

Vignette 2014.02 APK

Vignette 2014.02 APKVignette 2014.02 APK
100,000 - 500,000
Current Version
Requires Android
1.5 and up

Description Vignette 2014.02 APK
"Vignette is AMAZING. @neilgaiman introduced me to it." - Wil Wheaton (@wilw)Use more than 70 customisable filters and 50 frames in any combination to create many photo effects. Vignette is also a full-featured camera application, featuring digital zoom, time-lapse, self-timer and more.
Please note we can provide support in English only.
• Retro/vintage styles
• LOMO/Diana/Holga toy camera styles
• Instant camera styles
• Cross-process, duotone, charcoal, tilt-shift and much more
• Photo-booth and double-exposure
• Touch to focus
• Share your personalised saved effects with other Vignette users
• NEW Shuffle random effects
• NEW Move to crop
• Take pictures at your camera’s full resolution, even with effect (paid version only)
• Use the flash and front-facing cameras on most devices
• Self-timer, time-lapse and steady-shot modes
• Digital 10× zoom
• 21× optical zoom on Samsung Galaxy Camera EK-GC100
• Store location data in pictures (geotag)
• Use the volume rocker as a shutter button
• Edit imported photos
• On-screen controls for exposure, zoom, flash and switching camera
• Launch from the lock screen in Android 4.0+
• Remote shutter with Bluetooth remote, wired headset or Sony Ericsson LiveView
• Time- and date-stamp pictures with adjustable size, colour and format
• Rule-of-thirds and golden ratio composition guides
• Optimised for taking pictures underwater
• Share pictures via third-party apps
Vignette does not require an internet connection to process pictures like some apps, and does not upload your pictures to a central server like Instagram. Your pictures do not leave your device until you choose to share them.
New Features Vignette 2014.02 APK
Fixed: Minor UI problems.
Fixed: Not saving to external SD card on some devices.

Vignette - screenshot thumbnailVignette - screenshot