I've been googling for an hour and have come across a ton of incredibly intersting data, but not the topline I am looking for. Sometimes it helps to ask for help as the answer may be-- "give up, you don't even need that, here's something better that you really need". So feel free, this is open for feedback.
Looking for Ideally: Total Revenue on the iTunes Store grouped by App category by the month.
Would still be useful: if it included Android and was for the entire year.
Example: (I am making this up)
August 2015 $$$$$
Games: 3 billion
Music: 2.5 billion
Social Networking: 2 billion
Photo/Video: 2 billion
For your amusement and to avoid as many generic responses as I can, here's where I've looked and what I have found.
Anyway, you get the point, lot's of close but nothing hitting it.
This is all for my pitch/slidedeck. It's important for us to show the relative market size of Gaming vs. Social Networking vs. Messaging as well as the overall size across time. Maybe this is so hard to find because the business models are so entirely different (in-app purchase, vs ads vs. none yet/acquisition)...