> there was some kind of static packaging inherent to all iOS apps There was for apps using Swift. Before the Swift ABI was frozen, iOS apps using Swift had to

> there was some kind of static packaging inherent to all iOS apps There was for apps using Swift. Before the Swift ABI was frozen, iOS apps using Swift had to statically link the Swift standard library. Nowadays, iOS provides it as a dynamic library. (and having a stable ABI is quite an accomplishment for a language like Swift. See https://faultlore.com/blah/swift-abi/ https://faultlore.com/blah/swift-abi/)