If you're looking for a NextThreeBooks alternative, The StoryGraph is a good choice. It'll recommend books based on your reading history, mood and preferences. The service includes features like tracking and insights presented through charts and graphs, AI-driven recommendations, mood-based discovery and a mobile app for on-the-go access. It also integrates with Goodreads and offers a free plan with more features available through a paid Plus plan.
Another good option is BooksAI, a mobile app that uses ChatGPT to generate AI summaries of more than 40 million books. You can select spoiler-free, spoiler-filled or hybrid summaries, and the app will recommend books based on your favorite books. The app works in multiple languages and offers features like celebrity book lists and favorites lists to help you curate your reading tastes.
If you prefer an attribute-based search, check out BookAbout. The AI-powered site lets you search for books by many attributes other than genre and author. With a database of more than 500,000 books updated daily, it can help you find books you'll like even if you can't quite describe what you're looking for. That makes it a good choice for book lovers and voracious readers seeking new and personalized recommendations.