I was curious as to how well this comes across on iOS devices, and came across this while poking around the Kivy site:

  We haven't published our demos, but the winner of Kivy game contest #1 have been packaged for IOS: Deflectouch on iTunes.

Linking to this: https://itunes.apple.com/us/app/deflectouch/id505729681

It's free, and a fun little game. It feels non-native, but less so than some of the other apps out there. It interprets touch events smoothly enough, and runs well, though there isn't a lot going on so that's not a real indicator of performance.