Feedback: I instantly tried moving a note around on my phone. Did not move. Then I tapped a note and it opened fullscreen and the closing x supersmall at the edge of the screen. Instantly left the site.

I read the comments, oh this is for websites. Cool idea. UX just needs to be top notch.

That security issue (requiring all data) is a bit too much, dunno if you can do anything about it though.