The last time I used Jotform for creating a fillable PDF was two years ago.
I checked out Jotform again just now.
The created fillable PDF is mainly for sharing with respondents, who follow the link, fill in the PDF, and (a) submit it, or (b) download and then submit.
The owner of the form can view the submitted PDFs on his/her dashboard.
Under the free plan, I can create 5 fillable PDFs. If I delete one, I can create a new one in its place. This is quite generous (unlike Wordwall).
In this regard, Jotform is more generous than similar apps like Smallpdf, which do not have a genuine free plan.
Except that unlike two years ago, now I cannot download a fillable pdf first and then share it with others. The sharing can only be done online.