Dynamic PDF formular

Hello, 

I've created a PDF formular file with an input field and when the person enter the price then other fields are going to be calculated using the entered number. Everything is working in my Acrobat DC PRO but when I send the file to another person without paid adobe subscription, then the person can enter the number but the brutto and netto fields are not calculating / updating. Is this normal or am I doing something wrong? Or only people with DC PRO become the calculation?

Best wishes and thanks in advance