Is There a Way to Make a Note-Tipping App?

The app turned out to be way bigger than they ever thought it was going to be. And I don't think you could use it as a workspace because there are just too many friction points for a lot of individuals. The most obvious one for students is how do you get citations in there? How do you work with PDFs? Anyone that goes to university or uses any sort of university studies, like studies, which is obviously you now.