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.
Forms created in JotForm builder V4 are mobile responsive already. You can access your form on a mobile device and even create your form on a mobile device. You can read more in this blog: Introducing JotForm 4.0 – Build Forms Anywhere, Anytime
If you are referring to a different concern, can you please give us more info about it? Is your form embedded on your website but cannot be viewed on a mobile device? If possible, please give us the sites link and form URL so that we can further investigate.