Is this still relevant..? Xamarin has been really well funded and growing like crazy over the last 5 years. I'm always on the lookout for some way of doing iOS

Is this still relevant..? Xamarin has been really well funded and growing like crazy over the last 5 years. I'm always on the lookout for some way of doing iOS development that completely avoids Apple's atrocious UIKit APIs, and it seemed pretty legit from what I've seen. Is there any other alternative then?