We started working on this app around 9 years back. I realized the need for a quick note taking experience.
An app which does not come in-the-middle of your first thought and writing it down.
That is, all other apps makes you to lose the context of the work by switching between the browser you are already using and open their notes app, then find the correct note, then write and switch back to the browser, which becomes a nightmare of confusion and losing train-of-thought there, if you have to do this to-fro multiple times a session.
We have seen people interacting with our app 150-200 times a day, which shows the amount of quick copy-paste interactions in today's browser based world. This app is perfect for this.