Locate the LC_SEGMENT with segname _DATA and take the filesizeĭata segment size (mostly metadata) = 10420224 ~= 10 MB.Locate the LC_SEGMENT with segname _TEXT and take the filesize.Now you can retrieve the output depending on the architecture (armv7 + a section arm64 if it's a universal build) Gather the information for armv7 (LC_SEGMENT) and do the same for arm64 if applicable (LC_SEGMENT_64).Use otool to extract the output you need to see if you are close to the the 80MB limit.ipa (Which should have nearly the same size as the estimated size button in XCode returns) and navigate the Terminal.app to the folder the. That's why we add code segment as whole without adjusting for compression ratio. You need to descramble it with a decryption key before executing. The code segment gets scrambled to look like a perfect noise. The formula is coming from broader knowledge that only the code segment gets encrypted and the data segment compression ratio can be verified pretty easy.Įxtract the data segment from executable via dd command (you can specify byte offset + length) and then try to compress it. You can calculate it by using following formula, but be aware that the compression coefficient might vary:Īpp_store_size = sizeof(.ipa/(zip with exec_binary removed)) + sizeof(codesegment(exec_binary)) + 0.2 * sizeof(datasegment(exec_binary)) Note: since XCode 6.3 there is no estimate button anymore. Use the estimate button to get the estimated size of your app to ensure if you are above or below 100MB or the overall size of 4GB.Archive your app in XCode and export the app with your deployment certificate to an.Ensure you use correct optimisation, more information can be found here. Do not use debug mode, as it does not represent your final app.
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