If you want an app to read your favorite books in 3D, Hyra is worth a look. This immersive Apple Vision Pro app uses AI to generate richly detailed environments that flesh out the settings and characters of a book. The app comes with AI-generated chapter scenes that change as you read the book, and you can navigate those scenes in 3D. It's got five classics so far, but it'll expand with spatial audio support and the ability to build your own book collections.
Another option worth a look is Custom Story Creator, though it's geared more toward creating original graphic novels and anime than traditional novels. The platform lets people create comics and anime with high-end AI technology, and it offers immersive AR/VR experiences through its XR Reader app for Meta Quest 2 and Pro. It could be a good way to interact with your favorite stories in a new, interactive way.