Like Goodreads, StoryGraph (available for iPhone, Android, and web) is a service for book recommendations and tracking reading habits. The basic idea is you add the books you’ve read, give them ratings, and StoryGraph can use the information to build recommendations.
There’s a lot more to it than that, though. When you finish a book, you’re greeted with a sort of mini questionnaire. It asks about the book’s mood, pace, plot, characters, etc. You don’t have to fill this out, but StoryGraph uses it to understand better the types of books you like. It’s much more than a simple star rating.
StoryGraph also provides detailed analytics on your reading habits, displayed in—you guessed it—graphs. It breaks down your reading by genre, pacing, length, mood, and more. This data-driven approach can give you insights into your reading patterns and help you make more informed choices about what to read next.
StoryGraph allows you to import your Goodreads data, so you don’t have to start from scratch. Whether you can export easily from StoryGraph one day to a different service, is another story.
Also of note is the decentralised Fediverse alternative called BookWyrm, which I’ve featured before.
See https://www.howtogeek.com/storygraph-is-goodreads-for-readers-who-dont-like-amazon/