That sounds interesting. X2 exist for Android as well, it's standard part of the language? Have you been able to compare Android at some point to get a feeling of it? I don't have a Apple development account yet so I can't test on my iPhone just yet, I'm eager to try things myself.
I mainly need FBO's and shaders I guess, it does not matter how I get them so anything allows that would be amazing. I don't need amazing results but recently I got surprised by LibGDX bc It gives me 4000 8x8 sprites 256 128x128 sprites easily on any Android phone from 2013 and forward. That is great stuff to work with for me. I would love to have something similair for Apple now