How can I reduce the size of an iOS app built with kivy-ios?

We are building an iOS app using Kivy-iOS. Our current app size is 397 MB (up from 40 MB for the same app deployed to Android using Buildozer). We need to drastically reduce the size of this app, but can't figure out how to do it. Are there parts of the library kivy-ios

that we could exclude to reduce the size of the application? If so, how do we do it? So far, we have worked in turns both in the tools folder kivy-ios

and within xCode

linked frameworks and libraries, but have not been able to fix anything of significant size, nor successfully deploy the application.