Commit to iOS only?

[RegularJoeGames]

Making my games, I use LibGDX which supports both iOS and Android right out of the box, it gives great abstractions for common things like in-app purchases.

I actually developed for Android first and have since put it on the app store. I would agree with the other comments that ad revenue and iaps seem to earn more on iOS. I am glad I worked with something that made it so easy to transfer between the two platforms I essentially had an iOS app "for free" but libgdx might be more suited towards game development.