When having to share code between iOS and Android, most companies choose C++. It is a well known language with very good tooling, but it also has a lot of pitfalls. For one, it is a very complex language. It also makes it really easy to accidentally introduce memory leaks or segmentation faults; especially if you're used to automatic memory management via a GC (Kotlin) or Arc (Swift). It also looks quite different from modern language like Swift or Kotlin. Now that we iOS developers got (mostly) rid of Objective-C, and Android Developers got (mostly) rid of Java, it feels archaic having to go back to a language with an archaic Syntax like C++.
Rust looks and feels a lot like Kotlin or Swift, and it offers the same easy ways of sharing code as C++. In addition to that, Rust has a very safe memory management model, high performance, a way to do fearless concurrency, and a very rich package ecosystem. As a bonus, it compiles to WebAssembly, so the shared code could also be used in any HTML5 app. This talk showcases how one can share very performant cross platform code between iOS, Android and others by using Rust.