It can’t restore color perception (you’ll still have reduced color bandwidth versus someone who isn’t), but it can rewrite the visual spectrum being fed to the display onto narrower bands that sidestep the colorblindness gaps. Especially valuable when paired with the Magnifier mode that lets you look through the rear camera on the screen.

Android can do it to, under the accessibility settings you can have greyscale and various other colour modes

Windows 10 can do it too. It's called "Color filters". Both "Red-green (green weak, deuteranopia)" and "Red-green (red weak, protanopia)" work to allow me to use the site. The second one is more visible, but also much more distorting. Also I've now enabled the hotkey (win+ctrl+c).