>Maybe it doesn't matter since the Android marketshare is so much larger that targeting current - 1 stills gets more devices than iOS.
That's an interesting way of thinking about it, getting 20% of 100 is more than getting 80% of 10. I think the problem you'd run into is that some users with androids would be upset they can't install your app when their friend that has an android can install it just fine.
