TLDR : Great easy to use form builder and data collector.

I started using the app and for the first few hours, it is going great. I plan to use this app for both instructional purposes (students filling out worksheets) as well as a research tool. This morning, I started the Student Worksheets, but research forms will be similar as well.

1) Pretty easy to use and smooth drag and drop.
2) Quite a few choices of elements to drag and drop - forms, design elements etc...
3) When I test out the links (of the forms that the students will fill out) they look good!
4) I have yet to run it live so we will see, but from my test run it works well enough.
5) The PDF export is great. Is there a way to disable the link (file location info at the bottom right hand corner)

Overall I had an easy time learning and getting things done and managed to finish the first worksheet in a short time. I mostly spent time trying to get the look right. Once that is done, I just need to clone and repeat for the rest of my worksheets.

Nits (Just some personal observations, YMMV)
1) Selecting different elements are some times a bit tricky for when there are several layers of text, image etc... so click around.
2) I tried using an image in the background and while it allows for me to crop, it looks very zoomed in. So when I try to have the whole image show up, I cannot. Maybe a 'fit' command would help?
3) I really really really like to customize the look of my forms and while there are more than few Font, Color (You can select from a color chart/wheel or enter code). Ability to upload own fonts or provide a bigger list of Google Fonts.
4) I wanted to place my business logo - a bit unobtrusively - like in a PowerPoint/Keynote at the left bottom corner say. I cannot figure how to do that. It just shows up in the middle. Again I may need to mess around with it.
5) Last nit is that all the elements to make great forms are there - if only it were a bit more Canva-like in handling the UX. This is by no means a criticism as I can pretty much do what I need to do, just a small thing to ease my journey.

Great work!