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.
It's possible to collect customer information within reason using forms and viewing their submission data that is associated with them when submitted to you.
However, our system is not really designed or intended to be used as any sort of administrative database and moreover aimed at collecting reasonable data information depending on user needs.
You may also find this https://www.jotform.com/help/126-How-to-send-Submissions-to-Your-MySQL-Database-Using-PHP a useful alternative using your own database.