Industry's first all-in-one digital workspace for Learning
From dense content to personalized knowledge
Twinbook transforms your books, videos, and learning materials into knowledge built around you—remembering context, connecting ideas, and becoming more useful as you learn.
Get Started FreeTurns any content into one adaptive note.
Reads and reasons with full context.
Remembers and evolves over time.
Pluggable tools for every domain.
Bring in whatever you're already learning from. Start with a scan.
Your material, in whatever form it lives — Twinbook transforms your dense content into personal knowledge.
From dense material to a personalized high-yield note.
Not a summary — a complete, structured note that keeps everything that matters.
Customize your high-yield note.
One click on presets and the same source becomes whatever you need — in-depth for a first pass, high-level only before an exam, SOAP note for the clinic. Or describe your own style.
Your personalized note, at the center. Everything else, around it.
Twinbook brings all the tools you need right to your personalized note.
Built first for
healthcare learners.
Twinbook is now available for medical, nursing, and health-science students who need to turn dense course material into a personalized learning journey.
For creators & universities
Your content deserves to do more
Twinbook turns what you've already built into a living, adaptive learning system. You've spent years creating great content — books, videos, courses. But a PDF doesn't know who's reading it, and a video can't tell if someone's confused.
Upload any content
Books, videos, lecture recordings, notes, and PDFs — bring what you've already made.
Auto-generated adaptive materials
Summaries, practice questions, and smart flashcards, generated from your source.
Context-aware delivery
Twinbook remembers what each learner has seen and what they need next.
Learner insights
Track comprehension across concepts and see exactly where people struggle.
Full control
Your content, your rules — decide what's generated, how it's delivered, and who gets access.
Why creators choose Twinbook
Real understanding, not just summaries
Twinbook builds genuine comprehension instead of shallow recaps.
Powered by context and memory
Knowledge carries forward across every session, for every learner.
Your audience grows
Adaptive content meets each person their way — and reaches more of them.
Research / Blog
How Twinbook is built
- What Is Learning Memory — and How Students Control It
- Building a General-Purpose Agentic Learning Pipeline
- Harness Engineering: How a Small Team Builds and Operates Twinbook
- How Twinbook Protects Student Learning DataFlagship
- Our Approach to AI Safety in Education
- How Twinbook Safely Processes Dense Learning Content
Trust & Security
For institutions, creators & reviewers
- Trust & Security overview
- Data retention & deletion
- HIPAA & PHI policy
- FERPA posture
- Subprocessors
- University readiness roadmap
- Responsible disclosure & incident response
The moment it clicks
“I was reviewing cardiac pharmacology and normally would have spent hours going back through lecture slides, textbook chapters, and old notes to connect everything. Twinbook compressed that into a personalized high-yield note — broad enough to see the whole pathway, but detailed enough to drill into mechanisms, exceptions, and weak spots. That's when I realized this wasn't just another AI summary. It was a better way to move through complex medical content.”
Medical student
Twinbook for Students