I've problem about using Genymotion Android emulator for xamarin development.

I have intalled Genymotion desktop app and several Android devices within it. Whenever i run any of the installed device in Genymotion desktop app via start button, it works fine but there is no Genymotion emulator in the list of available emulators in Visual Studio, neither in Xamarin studio (There are only built-in Android Emulators and devices installed in Xamarin Android player).

I found some articles about using Genymotion Emulator for Xamarin and all of them says that :

Both Xamarin Studio and Visual Studio with Xamarin discover it, no problem
I am using Visual Studio Enterprise Edition, Xamarin business editiorn and free edition of Genymotion, if that matters.

After looking over Genymotion's web pages it appears the free version isn't for developers. So they may have left out the code that connects it to the debug systems. Ask them directly as well.