You can use Mendix Studio in a webbrowser. Mendix Studio Pro (Mendix modeler) only runs on windows.
On my macbook I use parallels to run a windows virtual machine on which the Mendix modeler is installed.
Alternatively you can use Virtual Box which has a free version.

You can install an FM or Parallels to use Mendix Studio Pro on Mac. 

But unfortunately there isn't a Mac Version available yet.

I am working with my Macbook based on Parallels Desktop (including Windows 10) for one week now. 

With the usage of the Mac “coherence mode” for the parallel windows, you can get a seamless user experience while working with the Studio Pro on a Mac.

First thing to do, is to tell your parallel windows to use the Mac as the standard browser:

If you know the IP address of your Parallel Desktop…

…You can use that IP address within the settings of your studio pro:

And whenever you do a run locally from your Studio Pro, it takes you to your default browser on your Mac - which is in my case my Safari – to show your results:

I hope this is useful for somebody. :-)