What are the differences between the Xamarin Studio and Visual Studio?

Both Xamarin Studio and Visual Studio are IDEs used to develop the Android, iOS, Class Library, Console, PCL, and Windows Phone application. Both Xamarin Studio and Visual Studio support F#.

Xamarin Studio	Visual Studio
Xamarin Studio works on both Windows OS X environments.	Visual Studio is available only for the windows environment.
On Windows, Xamarin Studio doesn't support windows phone and iOS project.	In Visual Studio, we can create any app.
Xamarin Studio on Windows supports only Xamarin.Android project.	Visual Studio supports Xamarin.Android, Xamarin.iOS, and Xamarin.Windows project.