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.
As far as I know there is not a limit, when you open the form in the Quiz app you get all the fields that you have added to your form, all the fields can be used in the app, and there is not a fields limit in the Form Builder so far, so you may add the fields that you need to your form and you should be able to use them in the Quiz app.