I'm currently doing my graduate internship, on a very interesting subject. I am comparing the Windows Store to the competition (Play Store and Apple App Store) for tablet apps. This means that I am comparing what kind of apps people like on the different platforms, where the opportunities for developers/entrepreneurs lie, etc.

I have some good data on the Windows Store (a list of all apps with their category, price, publisher, etc. etc.), but I just can't find a similar data set for the Android and iOS apps. I have contacted a lot of people with data sets, I googled all there is to google, I searched for research reports, etc. The problem is that companies that have this kind of data (such as Distimo) don't really want to give me this data (they sell reports for €10.000) and the research reports (such as Distimo's free reports) aren't complete or outdated. I could ask my company to pay €10.000 for such a report, but that's just too much, I don't want them to pay that kind of money for my graduate internship.

This is a serious problem for me. I've been stuck for 2~3 weeks now, and it's starting to give me sleepless nights because this could mean that I will fail my graduate internship.

Tldr; Can anyone please help me find a data set of Play Store / Apple App Store apps for tablets, or point me in a direction where I could find this kind of data? I'm stuck and I don't really know where to go from here.