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.
The submitted info is collected in the JotForm servers and you can check them in your submissions page, here is also a guide that will help you to view your submissions: How-to-View-Form-Submissions
However, if you would like to collect the data in a 3rd party app you could check our integrations page so you may find the app you're looking for and simply integrate it with your JotForm.
Link to our apps page: https://apps.jotform.com/category/integrations
If you have your own system and you could create your own script to collect the submitted data then you could also get the info via the POST method once the form is submitted, then you could process it on your end.
This guide will help you to handle the data via the POST method: Send-POST-Data-From-JotForm-Using-PHP-in-Custom-Thank-You-Page
Hope this helps.