Doing a quick search, I now see the software I purchased for $20 is now $39 - I bought the app, back in 2001. (Sorry, unless you have a way to travel through time.)
If you're looking for a free font creator app, $39 is nowhere near that, so this is not for you, I suppose. I don't understand why font creator apps are so expensive though (I've found software for $999 - who'd buy that?)
Actually that fontstructor site looks pretty good and might be worth a try.
GP