What is JotForm?
JotForm is a free online form builder which helps you create online forms without writing a single line of code. No sign-up required.
At JotForm, we want to make sure that you’re getting the online form builder help that you need. Our friendly customer support team is available 24/7.
We believe that if one user has a question, there could be more users who may have the same question. This is why many of our support forum threads are public and available to be searched and viewed. If you’d like help immediately, feel free to search for a similar question, or submit your question or concern.
To create a PDF form, just click MY FORMS at the top > click your form > MORE > CREATE PDF FORM.
Complete guide: How-to-Create-a-PDF-Form
Just keep in mind that since this will be a PDF, some functions/options wouldn't work as opposed to using an actual online form through a browser.
To learn more about the things that you can/can't do with the PDF, go to this page Fillable-PDF-Everything-you-need-to-know-about-JotForm-Fillable-PDF-Creator and read the Q&A section.