What are good features for note-taking web app

Hello, I'm new here. I'm building note-taking web app and for now in my site users can create and mange their notes in the browsers or in account. I also added good text editor. What could be a good feature for that app? I plan to add notes sharing but how it would be good for you? For example if you safe your wifi password for your home and you have a guest you just share your note to him somehow. But how? I plan to add some ai features but what you gonna need? I plan to make it usefull for schoolers and students to write their lectures. I plan to make it usefull to write your diaries. So for the above features I plan to add groups and categories. And all of that should be very simple because my target is the simplicity. My site is https://createnote.xyz if it is appropriate to show it. What do you think and do you have any ideas how to monetize it in future? Probably the ai features only?