These days, I'm working on Paperie in my spare time. It's a note-taking app featuring simplicity for individuals. Technically, It's made with PWA.
There are already many note-taking apps in the world, but I started making it because I'm not satisfied. This is how the number of note-taking apps is increasing around the world.
Paperie's excellent point is that you can use it once just open the url. You don't need to waste time creating your account or downloading a heavy app.
In addition, your notes data is only stored on your browser's storage. There is no server which store your data and leak it unexpectedly. It's secure by design.
If you are interested, try it. This is an OSS project, then you can view the source. Please tell me if you find some bugs.