If anyone in the comments is in a similar predicament to the author and would like a book logging app, I will say that I disagree on their judgement of StoryGraph - I've found it a pretty decent interface, the search function is very good, and the (anti)features mentioned in the footnote are incredibly easy to not use, as the creators seem to understand that many of their users have a very strong preference to avoid AI bloat.
https://hardcover.app is another choice. It's the one I've been using since right after the second Trump inauguration when I decided to "de-oligarch" as much as possible.