Your game is only available on iOS, so you aren't speaking from any personally observed metrics. By the most recent metrics I've seen, the top 200 iOS apps pul

Your game is only available on iOS, so you aren't speaking from any personally observed metrics. By the most recent metrics I've seen, the top 200 iOS apps pull in $18 million a day, while the top 200 Google Play store apps pull in $12 million. iOS still leads (courtesy of the lubrication of things like iTunes gift cards -- there will again be a huge bump after Christmas), but is there any rational player who looks at those numbers and thinks "Oh, I want no part of the latter"? And note that this difference has been closing very quickly (iOS is up 20% YoY, Android is up 242% YoY). Which is exactly why the majority of apps are built cross-platform from the outset. Whether using tooling that enables it easily (e.g. Unity, Titanium, etc), or designing around abstracting from the platform.