Nice! You are about to download Visual Studio for MacVisual Studio with Xamarin so you can write your apps entirely in C# and share the same code on iOS, Android, Windows, Mac and more.
If you already have Visual Studio, the installer will add Xamarin to your existing installation.
Mac OSX 10.11 or above is required
Visual Studio for Mac is free for individual developers, open source projects, academic research, education, and small professional teams.