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.
Are you referring to an offline mode for the form builder? Jotform is an online application, so unfortunately there is no off-line mode available. You will only be able to edit your forms if you are online.
If you are referring to an offline mode for the form itself, then I believe you can use the Fillable PDF feature for your requirement. With this feature, you can simply create a Fillable PDF version of your form that your users can fill offline and save. Then if they have an internet connection, they can simply submit the PDF form and it will be recorded on your submissions. You can check out this guide on how to create a Fillable PDF: Fillable PDF - Everything you need to know about JotForm Fillable PDF Creator.
If you are referring to a different concern, please let us know so we can better assist you.