All your notes and books are kept in your Dropbox account. That is why we ask the Dropbox login for authorization.
The path to your notes in Dropbox: Apps → NoteboxIn → notes
You can find a bunch of json files there. Each of them contains the data for one book in json format.
Notebox is the application which allows you to read and write notes and books with additional functionality, like searching and managing tags.
It is free, doesn't contain any ads and doesn't require subcription.
Notebox is build with ClojureScript and React, with the help of luggage library.
So if you are a web developer and you are creating an app, which requires keeping user data, feel free to use luggage, simple and unobtrusive storage solution.
Need more live examples? Take a look at the Cookbox, application for keeping the recipes. It is also based on luggage library.