I want to highlight two things, first, that Android apps are now grossing a reasonable amount of money. Still behind the iPhone and the iPad, but I think closing the gap. A year or two back the rule of thumb was that iPhone apps monetised 10x better than Android apps. Judging by the graph below that ratio is now more like 4x.
And secondly, as we reach the end of the year this is an appropriate moment to congratulate Angry Birds on what has been an unbelievable year. As you can see from the table below they had three of the top ten mobile apps of the year.