From the website I don't know what this is or why I should use it over other products. My personal preference is a local only notes, where I don't need a Googl

From the website I don't know what this is or why I should use it over other products. My personal preference is a local only notes, where I don't need a Google account to use it. There's loads of similar products out there, what's the killer feature that would make people sign-up to this?