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.
I see that you are unsure of what it means for how many submissions your account can have including whether or not it a monthly limit.
Your submissions is limited to an all-time total of 500 submissions for starter (free) plans.
This is also the reason why it says "500 Total Submissions Storage" and not per month there because that's the max limit for submission storage at any given time.
If you hit that max limit you will begin receiving notices from our system suggesting that you upgrade or your account will begin to delete older submissions every time you receive a new one to make room for it.