What do you like best?
I manage customer service at high tech firms but at home I am just a mom. And every summer I have the nightmare of getting medical forms for kids to summer camps. Usually it is a real pain of printing the form, filling in the info for the kid, scanning it, faxing it to the pediatrician. This time I decided to try PDFfiller which I use at work, and it literally took me 3 min to do two camps! I just imported the medical form pdf, filled it in, and faxed it to the doctor's office right from the app. Nightmare no more :-)
What do you dislike?
Some UI feels non-standard. For example I could only save the pdf in my downloads folder rather than being able to select the folder I wanted.
What problems are you solving with the product? What benefits have you realized?
Primarily, filling of paper forms online, for example insurance and tax paperwork for new employees.

What do you like best?
I enjoy very much that I can scan in documents and then fill in and add things to them easily.
What do you dislike?
Very little. But sometimes I find I accidentally click on the up/down bar instead of the buttons. Also, some of the buttons are not intuitive, but trial and error works well, and mistakes are easily deleted.
What problems are you solving with the product? What benefits have you realized?
I used to need a type writer (or hand write) sometimes still to comply with using the forms given to me by the government. Now, I can upload them and use the computer. Much better.