Online form with automatic analysis and response in WordPress

I’m looking for a WordPress based form handler which would take responses and generate data (on screen or via email) based on scores related to each question. I.e. If the person completing the form selected answer A each time, they would be given/sent some advice based on the answers to the question.

I’ve looked through lots of plugins which provide forms fucntionality – and I currently use Contact Form 7 – but can’t see anything which would do what I have in mind. There are some commercial services, but they are typically very expensive.

Does anyone know of any low cost/free solutions to this, either WordPress based or not? I would be very grateful for any help.