Can we use encrypted forms with mobile application?

Very nice application. I intend to explore further. What is the format of the data in-transit? Can it be encrypted?

You can use encryption feature with mobile forms as well, please visit this page for more encryption related information: https://www.jotform.com/encrypted-forms/ 

Here is also a FAQ page for mobile forms: https://www.jotform.com/products/mobile-forms/faq/