Easily create apps in C# for iOS.
Xamarin.iOS provides all the tools to build native cross-platform apps in one package. Xamarin.iOS lets you create, build, debug and deploy apps in Visual Studio, or use Xamarin Studio, a fully-featured IDE that is built for mobile app development. Xamarin delivers high performance compiled code with full access to all the native APIs so you can create native apps with device-specific experiences. You can also use Apple Xcode UI designer to create interfaces and storyboards that automatically sync with your Xamarin.iOS project.
Build native iOS apps with Xamarin.iOS