If you want a service to recommend books based on your reading history and preferences, The StoryGraph is a top contender. The service tracks your reading history, analyzes your preferences and suggests books based on your mood, genres, themes and other factors. It has features like AI-based recommendations, mood-based discovery and a mobile app for on-the-go access. You can also import your Goodreads history and join book clubs, so it's a good all-purpose service for book lovers.
Another contender is NextThreeBooks, which uses GPT-3 technology to offer personalized book recommendations. You can enter preferences for genre, writing style and content, and the service will suggest three books it thinks you'll like. It's good for readers who want some variety and simplicity in recommendations but still want to know the books are likely to be of interest.
For something more interactive, BooksAI combines AI-generated summaries with personalized book recommendations. It works in 9 languages and offers a variety of summary options, including spoiler-free versions. It can help you explore books from other countries. The app lets you save books you like and find new ones based on your reading history.