Recently Connor and I have been discussing whether the iOS and Android ecosystems for developers and wanted to get your thoughts
If choosing one, my opinion is that the iOS ecosystem is extremely populated and probably more difficult to breakthrough with some success. If you can breakthrough, I believe you'll do better as iOS customers are generally more willing to spend.
iOS is definitely better to develop for though. I am not great friends with the slow Android emulator, and in the past I've had trouble getting my programs to work with all devices (ex. HTC).