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.
Internet connection is mandatory to be able to submit the form online.
You do can have offline Forms, but if you need to submit the form data, you will need the internet.
You can use the Fillable PDF Form for offline forms.
user guide: -How-to-Create-a-PDF-Form
You can also host the form to your own website using its full source code. But you will still need the internet if the form needs to be submitted.
user guide: -How-to-get-the-Full-Source-Code-of-your-Form
Hope this help. Let us know if you need further help.