We also excluded super-niche notes apps, like those designed for fiction writers or developers. This might have excluded the app you personally use, but without this requirement in place, we'd have to consider whether Excel or Google Sheets was more efficient for taking notes. For this list, we weren't interested in apps that could be used as notes apps-we only wanted apps that were explicitly designed to be used as notes apps. It's the same with apps: you can write notes in a writing app like Ulysses or throw them in a Google Doc or Gmail draft you can use empty text files or even a sticky notes app.
You can write notes on anything: the back of a napkin, an envelope, a ticket stub, and, yes, a notebook.