Ask the book, in the margin

Connect your own key from Google or Vercel AI Gateway. The companion knows how far you have read, and keeps quiet about the rest.

Select any passage

The AI companion explains the passage where it sits in the book.

  • Chat about the whole book, or just one passage.
  • Recap what you have read so far, picking up after a long gap.
  • Pitch answers simple, clear or expert, in the language you choose.
  • See what each model and voice has cost you in the usage log.
A chat with the AI companion about Moby-Dick, answering without spoilers.
The book detail screen with rating, format, reading speed and time left.