Well, the performance depends on what you want to draw on the mobile more than the analysis cost.
For example this 16x16 grid runs at 60 fps on a Mi4C
If you have any c++ performance test to run and compare I can pass the code by that test and give you the results.
IOS support still has no release date. At this moment we have no hardware to build and test on IOS platform and we have no room for add more changes until April, so it will have to wait at least 2 months more.