We prefer accurate color during the day, but quite a few people have asked for extra control like this.

Expanded daytime settings For users who prefer very warm settings during the day, we’ve made an option that lets the sliders go all the way to 1900K, all the time.

Also, we’ve tuned up behavior at night and in the morning for “bedtime” mode: the night-time and early morning transitions are longer now.

Now it transitions quickly to daylight instead.

Better transitions If you woke up your laptop late in the day, f.lux used to do a very slow transition (as if you were “used to” the orange color).

Backwards alarm clock For years we’ve wanted an alarm clock that answers the question, “How much sleep will I get if I go to bed now?” So we made a little version of it for f.lux.

Check out the “Options” menu for this feature.

Dim on disable It’s always been painful to disable f.lux for a color check or late-night design work, so we’ve provided a new option that dims your screen (a lot) when you disable.

Fixed map popup when you change timezones (now you can tell it’s f.lux).

Bugs fixed for Catalina (and Mojave): dimming fixes, white cursor fixes, entitlements and notarization.

Download flux for mac os x 10.8.1