JotForm is a free online form builder which helps you create online forms without writing a single line of code. No sign-up required.
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.
If you would like to use your form offline, you would need to create a PDF version of your online form. You would then use a PDF editor to fill out the form and store the filled out forms on your device or computer.
We have a user guide which is about How to Create a PDF Form. You may want to view.
If I'm allowed to recapitulate, you can convert a form into fillable PDF, and then use the PDF as a template via using Adobe Acrobat Reader or Foxit Reader. So you will be able to submit them later.
I hope it helps.
If you need to further assistance, please feel free to contact us.