Easily create apps in C# for Android.
Xamarin.Android provides all the tools to build native cross-platform apps in one package. Xamarin.Android 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.
Neal Culiner, President, NC-Software, makers of "Logbook Pro"
Build native Android apps with Xamarin.Android