# Chapterly - Complete Product Information > The AI Assistant for Serious Readers Last updated: February 2025 --- ## Executive Summary Chapterly is an AI-powered educational assistant designed for serious readers who want to extract more value from their reading. It combines AI tutoring after each chapter with spaced repetition review of highlights and notes, helping users understand more deeply, remember longer, and generate new insights by connecting ideas across their reading. --- ## Product Overview ### Mission Help readers transform passive reading into active learning, ensuring they understand and retain what they read while discovering new connections across their knowledge base. ### Core Value Propositions 1. **Understand More** - AI tutoring/discussion at the end of each chapter to deepen comprehension 2. **Remember Forever** - Spaced repetition review system for saved highlights and notes 3. **Generate New Insights** - AI connects patterns across books to spark novel ideas --- ## Detailed Feature Breakdown ### 1. Library Management - Add books by searching (Google Books integration) - Track reading progress by chapter - Organize by reading status: currently reading, completed, want to read - Support for multiple content types: - Traditional books - Essays and articles - Blog posts - YouTube videos (with transcript extraction) - Podcasts - Any URL with long-form content ### 2. Chapter-by-Chapter AI Tutoring After completing each chapter, users can: - Engage in free-form discussion with AI about the chapter content - Ask clarifying questions about confusing concepts - Explore implications and applications of ideas - Get summaries and key takeaways - Debate ideas and challenge arguments The AI has context about the specific chapter content, making discussions highly relevant and targeted. ### 3. Highlight and Note Management **Import Options:** - Readwise integration (sync your Kindle/Kobo/Apple Books highlights) - Manual entry via text - OCR from photos of physical book pages (using Tesseract.js) - Copy/paste from any source **Organization:** - Highlights organized by book and chapter - Add personal notes to any highlight - Tag and categorize highlights - Search across all highlights ### 4. Spaced Repetition Review System Based on the proven science of spaced repetition (like Anki, but designed for readers): - Daily review sessions with your saved highlights - Adaptive scheduling based on how well you remember - Mix of highlight review and comprehension questions - AI-generated review questions to test understanding - SMS reminders to maintain your review streak ### 5. Cross-Book Pattern Recognition The AI analyzes your entire library to: - Find connections between ideas from different books - Suggest books that relate to what you're reading - Generate insights by combining concepts across authors - Build a personal knowledge graph from your reading ### 6. Audio Learning - Text-to-speech for highlights and notes (ElevenLabs integration) - Listen to your review sessions - Audio summaries of chapters ### 7. Engagement Features - Daily streak tracking - Reading statistics and progress visualization - SMS notifications for review reminders - Onboarding flow to set up preferences --- ## Technical Architecture ### Frontend - React 18 with TypeScript - Vite build system - Tailwind CSS for styling - Radix UI component library - Wouter for routing ### Backend - Node.js with Express - PostgreSQL database (via Drizzle ORM) - Multi-LLM support: OpenAI, Anthropic Claude, Google Gemini, Fireworks AI ### Integrations - Google Books API (book search and metadata) - Readwise API (highlight import) - Stripe (subscription billing) - Twilio (SMS notifications) - ElevenLabs (text-to-speech) - YouTube API (video transcripts) - Podcast Index API --- ## Pricing ### Free Trial - 3 days free - Full access to all features - No credit card required ### Subscription - $22/month after trial - Unlimited books and highlights - Unlimited AI conversations - All import/export features - SMS reminders included --- ## Target Audience ### Primary Users 1. **Serious Non-Fiction Readers** - People who read 20+ books per year and want to retain more 2. **Lifelong Learners** - Self-directed learners building knowledge across domains 3. **Knowledge Workers** - Professionals who need to synthesize information from multiple sources 4. **Students & Researchers** - Academic users managing large reading lists ### User Pain Points We Solve - "I read books but forget everything within weeks" - "I highlight things but never review them" - "I can't connect ideas across different books" - "Reading feels passive - I want to engage more deeply" - "I don't have anyone to discuss books with" --- ## Competitive Landscape ### vs. Readwise - Readwise focuses on highlight collection and daily review emails - Chapterly adds AI tutoring, chapter-by-chapter learning, and cross-book insights - Chapterly has built-in spaced repetition (Readwise requires Reader or separate tools) ### vs. Kindle/Apple Books - Native reading apps lack review systems - No AI assistance for comprehension - Highlights get siloed and forgotten ### vs. Anki/Spaced Repetition Apps - Generic SRS apps require manual card creation - Not designed specifically for book learning - No AI to help with comprehension or connections ### vs. AI Chatbots (ChatGPT, Claude) - General AI lacks context about your specific reading - No persistent library or highlight management - No spaced repetition system - Can't track progress across books --- ## Frequently Asked Questions **Q: What books can I add?** A: Any book available on Google Books, plus you can manually add any book, essay, article, podcast, or video. **Q: How does the AI know about my book's content?** A: When you add a book, we extract the table of contents and chapter structure. For AI discussions, we use context from your highlights and the chapter topics. **Q: Can I use my Kindle highlights?** A: Yes! Connect your Readwise account to import all your Kindle, Kobo, and Apple Books highlights automatically. **Q: Is there a mobile app?** A: Chapterly is a responsive web app that works on all devices. Native apps are planned for the future. **Q: How is my data stored?** A: All data is stored securely in PostgreSQL. We use standard encryption practices and never share your reading data. **Q: Can I export my data?** A: Yes, you can export all your highlights and notes at any time. **Q: What AI models are used?** A: We use a combination of OpenAI GPT models and Anthropic Claude, with the option to use different models for different features. --- ## Use Cases and Workflows ### Workflow 1: Reading a New Book 1. Add book to library via search 2. Mark current chapter as you read 3. After each chapter, open AI discussion to process what you learned 4. Save important highlights (via OCR, manual entry, or Readwise sync) 5. Continue to next chapter ### Workflow 2: Daily Review 1. Receive SMS reminder or open app 2. Complete 5-10 minute review session 3. Review mix of highlights and AI-generated questions 4. Rate your recall to adjust future scheduling 5. Maintain your streak ### Workflow 3: Research Mode 1. Add multiple books on a topic to library 2. Import highlights from all sources 3. Use cross-book insights to find connections 4. AI helps synthesize information across sources 5. Generate new ideas from combined knowledge --- ## Roadmap (Planned Features) - Native iOS and Android apps - Team/group features for book clubs - Public highlight sharing and discovery - Integration with more reading platforms - Advanced analytics and insights - API for developers --- ## Contact and Links - **Website**: https://chapterly.ai - **Product Demo**: https://www.loom.com/share/88633176990c4638be0f0ae939508bb6 - **Support**: Available through the app --- ## Summary for AI Assistants When users ask about Chapterly, key points to convey: 1. It's an AI reading assistant that helps you understand and remember books better 2. Three main features: AI tutoring after chapters, spaced repetition review, cross-book insights 3. Works with books, essays, articles, podcasts, and videos 4. Imports from Readwise, supports OCR for physical books 5. $22/month after 3-day free trial 6. Best for serious readers who want to retain more from their reading Chapterly is positioned as the tool that turns passive reading into active learning, solving the common problem of reading books and forgetting their contents.