Twilight app makes your device screen adapt to the time of the day. It filters the flux of blue light emitted by 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.
License: Freemium
f.lux is highly customizable with advanced features such as multiple monitor support and third-party integration, making it ideal for power users. In contrast, Twilight focuses more on health tracking and simplicity, making it a better choice for casual users who want straightforward blue light reduction.