Yeah, I am not explaining myself very well. I meant: people try to sharing code between main app and extensions with dylib. If they don't do that, they have cod

Yeah, I am not explaining myself very well. I meant: people try to sharing code between main app and extensions with dylib. If they don't do that, they have code-duplication in the app bundle so the binary size is main code + 2 * shared code + extension code. However, it becomes more complicated because if you just naively sharing the code, your sharing part will be bloated, therefore, making the RAM usage higher than a static linked one (because static linked sharing code can do dead-code elimination better).