I've tried Xamarin a couple of times and found that it's come along leaps and bounds in recent years. Especially when you compare it to the crashy mess that is

I've tried Xamarin a couple of times and found that it's come along leaps and bounds in recent years. Especially when you compare it to the crashy mess that is XCode. I suspect it hasn't been widely adopted simply because it costs money and adds a dependency (Xamarin need to implement new iOS APIs before you can use them). For me personally, I love C# and really tried to justify buying. But then Swift came along and it's a joy to use. Doesn't work cross platform, of course.