Re: Already baked into my phone
>@Dave, sorry to disappoint you, but f.lux IS available for Android.
Ah, so it is. That's new. Last I went looking for it (I'm an Android user) it wasn't available. The retrieval date for the Wikipedia article suggests the same:
The developer announced that an Android version is in development.  [ "F.A.Q.". f.lux. Retrieved January 15, 2016 ]
My point stands that the Android was the last mainstream OS that f.Lux came to (after OSX, Linux, Windows and jailbroken iOS), though of course searching the Google Play Store for f.Lux has resulted in similar products for some time.