Unity game file size more than project size on xcode. how to reduce size?

I have done a game on unity3d and directly i have imported it to IOS… the build size is 30 mb and the project size is 23mb on xcode. textures are about 6mb. Im using armv7 architecture on xcode to build… Plz tell me how i can reduce my build size.

thank you.

http://unity3d.com/support/documentation/Manual/iphone-playerSizeOptimization.html has some advice for you.