Short and memorable domains are all the rage. Always have been and will continue to be in the future. This is a great two (2) word popular words domain. It’s very memorable and very easy to brand. You can make an App that takes sync notes across different platforms.
What about the Competition?
Sure Google and Apple have very popular Note taking applications. The truth is that they are not very good. First mover has it’s place – but the public is fickle and willing to move on to a better solution.