Here are top categories by downloads, Q3 2014 - iOS App Store

1 Games

2 Entertainment

3 Photo & Video

4 Social Networking

5 Lifestyle

Top categories by Revenue - iOS

1 Games

2 Social networking

3 Music

4 Education

5 Entertainment

 

Top categories by downloads - Google Play

1 Games

2 Communication

3 Tools

4 Entertainment

5 Photography

Top categories by revenue - Google Play

1 Games

2 Communication

3 Social

4 Tools

5 Travel & Local