If you use a computer or laptop at night, you may notice how stark the screen is compared to the more 'natural' indoor lighting. SunsetScreen allows you to adjust the screen's colour to the hue matched by your house's light. An overly blue screen may also affect melatonin production in the brain which could prevent you from getting a restful sleep at night.
Compared to similar programs, SunsetScreen allows you precisely set the time of the sunrise and sunset. This is helpful in the winter months where daylight would only be limited to a few hours. In addition, SunsetScreen allows you precisely set the hue, saturation or brightness, a function not available in others programs of this type.