www.makemkv.com

Gday.

I have yet to download MakeMKV but when I do I would like to be able to use it on both my Windows and Mac computers.

Will I have to have two separate downloads (and pay for both) ?

Sorry if this is a basic question, hope some one can help.

Thanks in advance

Separate downloads for Windows, Linux, and Mac. But one license works with all three. You are not to be using it on more than one computer at a time, though there is no enforcement of that by the software itself.