Switched from Goodreads to StoryGraph to escape Amazon’s nonsense a while back. Felt like it was missing a few things and found Hardcover recently, and I haven’t looked back.
I don’t really use the social features of these apps, so I’m more interested in the progress tracking and recommendations: I can’t think of any other apps that are working on “AI” recommendations, which so far have been pretty good.
Adam’s email updates are refreshingly non-corporate. Interesting, technical, and honest (he often discusses Hardcover’s finances).