GoodNight is described as 'IOS app developped by @anthonya1999 (Github).It allows you to adjust the screen temperature, brightness, and color'. There are more than 10 alternatives to GoodNight for a variety of platforms, including Windows, Mac, Android, Android Tablet and Linux. The best alternative is f.lux, which is free. Other great apps like GoodNight are Redshift (Free, Open Source), LightBulb (Free, Open Source), Twilight (Free) and Windows Night Light (Free).
LightBulb is an application that reduces eye strain produced by staring at a computer screen when working late hours. As the day goes on, it continuously adjusts gamma, transitioning the display color temperature from cold blue in the afternoon to warm yellow during the night.
The app filters the blue spectrum on your phone or tablet after sunset and protects your eyes with a red filter. The filter intensity is smoothly adjusted to the sun cycle based on your local sunset and sunrise times.
NegativeScreen is a Windows application allowing you to invert your screen colors. Apart from accessibility matters, this software is especially useful when you are surfing on the internet in a dark room, and the screen is dazzling you.
Free software for eye protection and more! It protects your eyes while you are working on the computer. Eye Saver has three main functions: blue light filter; eliminates the invisible flickering of the display backlight; reminds you to take breaks;.
Iris is software which makes monitors healthy for the eyes. With iris you can reduce the blue light emitted from your screen for better sleep, reduce the brightness of your screen without PWM and avoid eye pain.
CareUEyes is a very simple but useful program when it is about your eye care. The program comes with a very simple and clean interface and needs to technical knowledge. Even a novice computer user can download and use it easily.