If it wasn't exclusive for Apple devices, I'm pretty sure I would play.
I don't get why there isn't an Android version, since this OS is more popular (or at least as popular) than iOS.
When Android version comes out, sure I'll download and play it.
The way I understand it, and this is just going off what I'm told, is that you the iphone only has so many phones which all use about the same os. There are far less bugs and glitches and errors found than the vast amount of different types of android phones out there that use multiple phones with different types software and various hardware.
Tl;dr the time it takes to release the iphone version is much less than the android version. This isn't always the case though. Due to rules and regulations sometimes playing a factor.