App file size differences in Android and iOS

Question

Working with both app distributions services (android market and Apple App store) I have discovered a mystery.

The file size of an app is in general larger for an Apple a

Answer 1

In my opinion, Apple Developers are using more full-screen size Images (in low def and Retina), and much more images than Android, and UI definitions files for iPhone (.XIB) are much bigger than XML files used in Android. There also should be a difference of Compression in packaging (.APK) is so hugely compressed ! And Finally maybe a difference in Including frameworks, but on this point I have no clue :)