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.
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JotForm Support Manager
Do you want to randomize the order of the questions? Or do you want to show new set of questions dynamically?
I don't think we got both functionalities on either a widget or an app. Let me open a ticket in order to request this. If they find it feasible to implement it, they'll update you on this thread.
Is there a way to have, say, a set of 20 questions but randomly select half of those each time someone clicks on the survey?