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 looked at both of those links and I have a few questions.
Do I use those apps to build NEW apps? Do I use those apps to convert existing apps to a mobile version?
I'm not sure what to do with those two links and how to use them.
No, those apps are not to build new apps nor to convert existing apps to mobile version. They are for you to be able to access the submision data of your forms from your Android or your iPhone if you cannot check such data from a PC.
If you would like to build some kind of integration to connect your form data without using the Jotform website, you may try to use our API, you can find more info about it here: http://api.jotform.com/docs/
Please inform us if you still need assistance with this inquiry.