Topaz Video 1.0.0 (New Studio Release)

[jo.vo]

Hmm, this answer by Eric Yang (and he definitely should know it as CEO) is then contradicting the EULA:

Topaz Studio

There’s no caveats or downsides to choose Pro over Personal. You also get a founding price for Pro, which you can access by emailing help@topazlabs.com. Both Personal and Pro only include a single user per purchase, rather than two. However, as long as you’re an individual user you can still easily switch between computers by just deactivating right after logging in.