If you use it a lot, may I ask (generally speaking) how well it compares to OneNote? I always like that “free form” page format in ON, and I tried Curio, but I struggled to find a real use case for it, I guess.
Anyway, Curio has far more features than OneNote. Obviously, whichever one you use is going to depend on the use you put it too. I don’t mean that circularly. But, if someone needs to build out a notebook with images, text, links, tags, annotations, notes, etc, then Curio is a good choice. If you don’t do that much, or prefer to do that kind of sketchnote on paper or in GoodNotes, for example, then Curio is overkill.