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.
You could set up an admin section of your form or a set of hidden fields for comments. This thread here describes how to setup a full approval workflow if you'd like:
However, if you only need the section for reviewer comments, you would only need to include the admin section and have the edit link sent to all the reviewers.