This website is absolute garbage. I am a public school teacher. I wanted to use the free version to conduct one survey with my students in order to better my teaching practice. I avoided using any paid features as I live on a teacher's salary and cannot afford extra expenses. Little did I know that if you go to the page where it compares versions you are informed that they will WITHHOLD responses from you behind a pay wall.
I have over 150 students and I will only be able to read 10 of their responses. Otherwise I need to pay them $50 for the privilege of reading text that my students have already filled out for me. It would cost them nothing to give me the information I need, however their customer service team has been decidedly unhelpful. They believe that paying $50 for one survey is a reasonable, cheap option. I believe that I have been deceived and I am profoundly disgusted by their business practices. I will be telling everyone I can not to use this service. Go somewhere less deceitful.