After reviewing the latest data from developer USTWO on their game Monument Valley, the data seem to point to almost identical numbers with regards to revenue between iOS and Android, although the piracy rates are still higher amoungst Android. Here are the figures: Revenue total for 2014: $5,858,625 iOS was 81.7% of that revenue and Android was 13.9% USTWO got an average of $2.73 per 'legal download from iOS users USTWO got an average of $2.75 per 'legal' download from Android users The game was 'not paid for' on approx 60% of iOS devices The game was 'not paid for' on approx 95% of Android devices ** Tweeted by USTWO on Jan 5 ** Also note that Amazon had Monument Valley as a free download as its app of the day, so some Android users did not pirate the game, but that is likely a small percentage number. The big takeaways from this is that while revenue between iOS and Android is equal on a 'per legal download' basis, iOS still pulls in much more total revenue. Secondly, piracy rates on iOS are not as low as I thought. 60% of those that hae downloaded the game on iOS did not pay for it. Some of this can be attributed to family sharing, but I'd imagine that is a small number by comparison. Just some interesting data.