Yes that's correct, currently the modeler only runs on Windows.
Any ETA for mac or web version? :(
I would love a Mac version as well! And as 2nd best, a web version.
Try "Parallels desktop" or "VMware Fusion" on a Mac. Works great for me!
Or install a bootcamp windows partition on your mac
Too bad there isn't any support for the Mac users. Looks like a great tool, but I won't spend any money buying a while new OS just to use this one tool. .