AI study tool that turns lectures and learning materials into notes, flashcards, quizzes, and tutoring
Context-aware AI book editor for authors
Stage
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Founded
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Based in
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AT
Pricing model
Freemium
Freemium
Pricing
Not given
Octavo: Free forever (1 project, 3 research files, limited AI usage). Quarto: $20/month or $200/year (unlimited projects, 50 files per project, 10× more AI usage). Folio: $100/month or $1,000/year (unlimited research files, 5× more AI usage than Quarto, priority queue, early access to new models).
Key features
Automatic summarization of lectures and content
AI-generated flashcards with active recall
Auto-generated practice quizzes
24/7 AI Tutor for question answering
Support for multiple file formats
Live lecture recording capability
Unlimited uploads and daily usage
Per-session progress tracking
Multi-language support
Context-aware AI suggestions that read your chapters first
Source-grounded edits from PDFs, URLs, and YouTube transcripts
Red and green diffs requiring your approval
Export to Amazon KDP, Apple Books, Lulu, IngramSpark, Google Play Books, Draft2Digital
Chapter-aware AI agent
Citation engine with Chicago-formatted bibliography
Front matter and back matter editor
Version history to save and restore manuscript versions
Clean PDF and EPUB export with professional typography
What makes it different
Designed specifically for learning with science-backed cognitive science methods
Supports more file types and formats than competitors
Complete study system in one platform
Used by 5 million students worldwide
Keeps your entire book and research in context, unlike chat windows that start fresh each session
Returns edits as approvable diffs you control, not auto-inserted changes
Built specifically for book publishing with real front matter, back matter, and professional export formats
Mindgrasp
Chaptora