IOS 64-bit dual-size application

Question

I just introduced an app update for the iOS AppStore with 64-bit and 32-bit compatibility. I have not changed anything except the 64-bit architecture, but the size of the application now almost doubles from up to 64-bit from 2.7 MB to 4.5 MB.

Is this normal when compiling an application for both 64-bit and 32-bit iOS devices? Why is this happening (someone wants to explain in technical terms)? Or did something scared happen in Xcode?

Answer 1

This is pretty normal, because the code is compiled twice - once for 32 and once for 64-bit architectures.

Additional information http://www.idownloadblog.com/2013/09/16/apple-to-devs-we-want-your-64-bit-apps-asap/