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.
Please be noted that you can use free plan for any number of months. The only thing you need to keep in mind that free plan has submission limits and your account usage should be within the submission limits.
You can upgrade your account only when you need it and the downgrade it anytime you think you will not have more usages. For example you can use free plan form January to September and then upgrade in October. You can then cancel your subscription in December.
The following guides should help you :
Upgrade your account: http://www.jotform.com/help/331-How-to-upgrade-my-account
Cancel subscription: http://www.jotform.com/help/341-How-to-Downgrade-Subscription-back-to-Free-Account
Hope this helps.
Do get back to us if you have any questions.