This is one area I will give Apple credit for. While their app store is a pain to navigate, their framework support and dev patterns have stayed pretty consistent since the early days of iOS. My companies iOS app today looks very similar to how it looked 9 years ago when we started it, aside from changing from objc to swift, it's still driven by core data, view controllers and storyboard views. Our android app on the other hand is kind of a Frankenstein app that started with Activities, Java, Sqlbrite, Butterknife, manual state management and Dagger, and has mostly transitioned to Fragments, Kotlin, Room, Data Binding, ViewModels and no Dagger. It's still quite a mess that we'll never have the budget to fix up properly.