Disappointed, but now less so...
I use F.lux on my desktop, and was looking forward to the Night Shift feature of 9.3. I can't think of a technical reason why older hardware can't alter the colour of the screen.
I'm not sure it helps me sleep, but it is definitely easier on my eyes in the evening, although I often disable it for watching video with more brightness.
No doubt some enterprising app developer will get around the hacks that the inventors of f.lux used to get themselves kicked off the app store.
On the upside, the 9.3 update 'just worked' on my iPad 2, and on my iPhone 5c (also not compatible with Night Shift - grrr)
Biting the hand that feeds IT
