Let me try to clarify this. If you navigate to the UI for Xamarin Product Page
and scroll down a bit (just below Key Features) you will see the details within the green stripe -- Xamarin.Forms, Xamarin.iOS and Xamarin.Android with the controls we are currently offering. Xamarin forms
is a framework, which allows you to build native apps for iOS, Android and Windows Phone with a single C# codebase. We ship chart for Xamarin forms at the moment. On the other hand, for iOS and Android we ship .NET assemblies which wrap our native controls, so that you can use them with Xamarin.
Still, the bottom line is that you need Xamarin in order to use Telerik UI for Xamarin. Of course, you can use our iOS native suite without Xamarin, but this would not be possible with Visual Studio and you will need an iOS dev environment like XCode.
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