Invalid Executable Size – From iTunes Connect

I am uploading my iOS application on iTunes. I am using MonoTouch for compiling my LibGdx Game for iOS. In Android it is hardly 7-8mb. But When I upload on iTunes AppStore then its goes to 78 mb. I dont know why ? Please Let me know.

I have also received this error from Apple.

Dear developer,

We have discovered one or more issues with your recent delivery for “Run Panda Run: Racing”. To process your delivery, the following issues must be corrected:

Invalid Executable Size – The executable size of 72037504 bytes exceeds the maximum allowed size of 60 MB.

Source: Xamarin.ios Questions