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.
Our forms are mobile friendly and works very well on mobile devices. We have tested it on iPhone and android devices. Please be noted that there are other factors as well when you want to make your form responsive. Example your website layout, the form width and it also depends on if you have any widgets in your form.
Please ensure that you embed your form using its iFrame embed code and then if you see any issue with your form in mobile appearance, you can inject custom css code including @media tag to style your form for different devices. We can also help you with custom css code.
Do get back to us if you have any questions.