Earlier quoted context omitted.
So, uh, why are you introducing it as a notes app? You've got a good start to something; take two steps back, consume and digest the feedback you're getting, then use it to better your approach.
Good point. There is only so much you can say in one line on HN. Marketing is tough. Any suggestions would be welcome.
First make a notes app that people love. This will be harder than you think. Once you've done that and have enthusiastic users it will be much easier to move into other areas.