What we have here is a simple multiplatform Apple app where it demonstrates the use of a Rust library I've built previously. The app compares the executions time of computing Münchhausen Numbers using either Swift language or Rust language.
If there is a need to know how to add the Swift package used in this app, use this link to SwiftOxide, and also read the aptly name article Rust Library in Swift to know more about how the package was created.