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.
Please check our pricing page here, you can see the details there: http://www.jotform.com/pricing.
For all types of subscription plan, including the Free/Starter, you can create unlimited number of forms and you can add unlimited number of fields on them. Although, if it's a very very long form, browsers will be having a hard time loading them, but you can resolve that by making the form multi-page, here's a guide for that: http://www.jotform.com/help/119-How-to-Create-Multi-Page-Forms.
I hope that helps.