F.lux adjusts your device's display colour temperature according to location and time of day. The program is designed to reduce eye strain during night-time use, and to help reduce sleep distribution because of excessive exposure to blue light before bed.
Another key feature of F.lux is that it manually adjusts your screen brightness throughout the day, depending on the amount of light in your surroundings. By being designed to automatically adjust the intensity of your screen, it finds the optimal intensity for screen based on the variations of light around.
As a result, it takes into account the time of your country, the sun direction, the location of your desk in the room and the ambient light. F.lux
is easy to set up and can work independently. Now, with this software, no need to adjust the intensity of your screen manually or change the parameters of the graphics card in your computer.
For more information about F.lux, their website
contains a helpful FAQ.