Free tools for your health
Control the blue light from your screens
to improve your sleep-wake cycle.
Computers
f.lux is a free software developed by Michael and Lorna Herf that makes the color of your computer's display adapt to the time of day: warm at night and like sunlight during the day.
Mac: f.lux for Mac
Linux: f.lux for Linux
Mobile Devices
There are two different free tools depending which operating system you run.
Android: Download Twilight for free
iOS: As of iPhone 5s, blue light filters are built into the software. To configure it, go to "Settings" from your home screen. Then choose "Display & Brightness" and Select "Night Shift."
