I'm really confused. Is this intended as a programmer's tool? Or as an end user tool?

If I understand it, create an HTML form, submit to server, spit back PDF. This has been built into ColdFusion for about a decade, and it is trivial. [and I assume other server side software can do the same thing].

Aside from that, the bulk of the PDF Forms I download these days can already be filled out with Acrobat. I'm not sure what benefit you're offering me in time savings.