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iOS 64-bit app Doubles in Size

I just submitted an app update to the iOS AppStore with 64-bit and 32-bit compatibility. I haven't changed anything except the 64-bit architecture, however the app size is now almost doubled from a pre-64-bit size of 2.7 MB to 4.5 MB.

Is this normal when compiling the app for both 64-bit and 32-bit iOS devices? Why does this happen (anyone care to explain in technical terms)? Or did something funky just happen in Xcode?

It's pretty normal because the code is compiled twice - once for 32 and once for 64-bit architectures.

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

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