i knew there were others around (mentioned in earlier post), but i could only extol the virtues of the one i knew, as opposed to some pretty ordinary freeware that was around 5 years ago. i use it on a desktop and a laptop, so wasn't aware of the extra licencing, nor have i thought about upgrading versions. not questioning your research, but if i remember (without going and looking it up), i thought beersmith was licenced to 2 terminals, regardless of terminal type. the small part of the program that i use doesn't rate an issue for me at this point to upgrade. (personal usage requirements here)
although, (maybe the same with brewfather), you do get a lot of add-ons for updated supplier product info (eg bestmalz, wyeast, viking catalogues). which is very handy.
anyway, not my homework to do LOL