I have a successful kids app on iOS that I recently ported to Android. The Android version made 5% of what the iOS version made last month.
If rankings are anything to go by then virtually nobody can be making money from paid Android apps. During its first week, my app peaked at 50 sales in one day on the Amazon app store. That put it at #120 of ALL PAID APPS and #3 in kids apps just under some Dora app. The app is now idling around #400 of all paid apps with around 10 sales a day. By way of comparison, I need to sell around 100 copies a day to break into the top 400 of all paid apps in the US on just the iPad rankings.
So, from a purely financial perspective, why are people writing Android apps?