[elipsey]

Exactly. There's a linux version too, but I won't use this because it's closed, not because it isn't free as in beer. I don't like breaking my OS with crappy vendor packages that only work on half the versions of half the distros.

Also, the monetization strategy suggests an ulterior motive that makes it hard for me to accept the idea that this is important for my health, or public health, at face value.

[makepanic]

http://jonls.dk/redshift/ is a good open source alternative to f.lux