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.
By generating spreadsheet, if you mean you want to export your submissions to a spreadsheet,
than you can export them by selecting the submissions of the form and export to excel as displayed.
Furthermore, you can integrate your form submissions with google spreadsheet. To do that please follow the instructions described here