Twilight

12.7

Twilight is an interesting app that adjusts the color of your screen so that reading from a mobile device won’t affect your sleep cycle. Read more about Twilight  

The developers of Twilight have built an app that takes into consideration recent studies that show a simple fact. Reading from your phone or tablets before going to bed can delay the sleep pattern, mostly due to the predominance of blue light.
 
Twilight does away with this problem by changing the color of the screen based on the lighting conditions set by using the sun cycle based on your local sunset and sunrise times. It’s a very simple principle that works.
 
Users will be able to choose the values that they want for the lighting conditions on their screens, of they can just leave in the default position.