It's incompatible based on devices. In case you haven't noticed, the 5 isn't the same in display dimensions as the 4. There was a bug fix or springtomize since then that's fixed most problems with compatibility issues
Sent from my iPhone using Tapatalk 
You didnt say that before. You said its "incompatible with iOS6 devices" not SOME devices. Either way im just saying I have it installed on my 5 running 6.1 and havent had any issues. Thats all I was trying to say.