Read Smarter.
Understand Deeper.
Remember What Matters.
For readers who want more from every book.
Early access opening soon. Join the waitlist.
Every kind of reader deserves better tools.
“You highlight in your reader, paste into a flashcard app, then open ChatGPT to quiz yourself. Three apps, ten minutes, same book.”
Quiz generation · Flashcards · Spaced repetition
“You read in one app, cite in another, build your bibliography in a third. By the time you export your notes, you've lost the thread.”
AI citations · Bibliography builder · Notion export
“You're 400 pages into a fantasy series and you've forgotten who three people are. There's no tool for that. There wasn't.”
Character tracker · Plot timeline · Read aloud
Chaptera puts it all in one place. The reader, the AI, the study tools, the export. Whatever kind of reader you are.
Try the AI that reads alongside you.
Drop in any passage. Pick what you want to do with it. No sign-up required.
Tools That Change How You Read
Built around how you actually read — not just how you ask questions.
Character Tracker
AI extracts character profiles, relationships, arcs, and mention frequency as you read.
Plot Timeline
Chronological or thematic event timeline with importance levels and character involvement.
Concept Extraction
Themes, motifs, symbols, and key ideas automatically identified and tracked across your book.
AI Quiz Generation
Generate multiple-choice, true/false, and short-answer quizzes from any chapter or selection.
AI Flashcards
Turn any passage into study flashcards instantly. Study and review them right in the app.
AI Study Guides
Full study guides with key concepts, practice questions, and discussion prompts — generated from your books.
Academic Tools
Auto-generate citations (MLA/APA/Chicago), navigate cross-references, build bibliographies, and export annotations to Notion or Obsidian.
AI Library Search
Ask questions that span your entire collection. Find topics, compare authors, surface your own highlights — across every book you've uploaded.
4 Reading Modes
Focus, Bionic, Speed Reading, and Dyslexia Friendly modes. All auto-hide panels for zero distractions.
Your AI Study Partner, Built Into Your Reader
Other apps make you switch between reading and studying. Chaptera does both, simultaneously, with full context awareness.
You already
Highlight passages
Chaptera turns them into flashcards
You already
Re-read difficult sections
Chaptera explains them with AI chat
You already
Want to remember what you read
Chaptera generates quizzes to prove you do
PDF Conversion That Understands Your Document
Most converters just dump text. Ours analyzes columns, detects footnotes, preserves formulas, removes watermarks, and builds a real table of contents — so your EPUB reads like the original was designed for it.
- Multi-column layout detection (92.7% accuracy)
- Footnote and formula preservation
- Watermark and header/footer removal
- Cross-page paragraph stitching with CJK support
- Auto-generated table of contents from document structure
- Post-conversion quality scoring (0–100)
2-column layout • 47 footnotes • 12 formulas
Quality: 87/100 • 95% content retained
18 chapters • All footnotes preserved
Ask Your Book Anything
Our AI reads along with you. It knows which page you're on, what you've highlighted, and the full context of the chapter. Ask questions and get answers with clickable citations that jump to the exact passage.
- Full-book RAG with citation navigation
- 6 pedagogical approaches (key concepts, critical analysis, etc.)
- Voice input for hands-free questions
- Persistent chat history across sessions
Research Across Your Entire Library
AI Chat knows the book you're reading. AI Library knows your whole collection. Ask a question and Chaptera searches every book you've ever uploaded — citing which book answered and which passage. It's a research assistant with a photographic memory of everything you've read.
- Searches every book you've uploaded — simultaneously
- Answers cite which book and which passage answered
- Find topics across authors: "who covers cognitive biases?"
- Compare arguments: "how do these books treat justice?"
- Surface your own highlights across your whole collection
- Name a specific book and it reroutes with full chapter precision
AI Library
“Compare how Frankenstein and Plato's Republic treat the question of justice”
“Justice, in Shelley's framing, is not a social contract but a moral debt — owed by creator to creation, and by society to the individual it has wronged…”
“Plato's just city requires each part to fulfil its proper function — justice emerges from order, not from rights or fairness in the modern sense…”
+ 3 more passages from 2 other books
Study Tools That Replace 3 Apps
Export your highlights and notes directly to Notion or Obsidian. Chaptera generates quizzes, flashcards, study guides, character maps, plot timelines, and concept extractions — all from what you're actively reading, without switching apps.
- Quiz generation: multiple choice, true/false, short answer
- Flashcard generation from any selection or chapter
- Full study guides with configurable sections and difficulty
- Character tracker with relationships and arcs
- Plot timeline with importance and character involvement
- Concept extraction: themes, motifs, symbols, ideas
- Export highlights to Notion, Obsidian, or Markdown
Read How Your Brain Works Best
Different tasks, different brains, different modes. No other reader offers even one of these.
Focus Mode
Highlights current section, dims everything else. Auto-collapses panels for zero distractions. Paragraph, sentence, line, or word granularity.
Bionic Reading
Bolds the first letters of each word. Your brain fills in the rest faster.
Speed Reading
RSVP word-by-word display at your chosen pace. Train to read 2-3x faster.
Dyslexia Friendly
OpenDyslexic font, color overlays (blue, green, rose, yellow), enhanced spacing.
Word-by-Word Karaoke for Books
Not just text-to-speech. Every word highlights as it's spoken. Every sentence glows in context. Follow along visually while you listen.
Built for readers with ADHD, dyslexia, or anyone who processes better when they hear and see words at the same time. Unlike standalone TTS apps, Read Aloud stays synced with your annotations, highlights, and reading position.
See How We Stack Up
We checked every major platform. Here's what we found.
| Feature | Kindle | Readwise | Speechify | NotebookLM | Chaptera |
|---|---|---|---|---|---|
| AI Book Chat | Coming | Highlights only | — | Multi-doc | Full book RAG |
| Active Study Tools | — | Highlights review | — | — | Quiz · Flashcards · SM-2 |
| Study Guides | — | — | — | Audio overview | ✓ |
| Character Tracker | X-Ray | — | — | — | ✓ AI-powered |
| Plot Timeline | — | — | — | — | ✓ |
| Academic Citations | — | — | — | Source citations | MLA/APA/Chicago |
| Reading Modes | Font settings | — | — | — | 4 modes |
| Word-Level TTS | — | — | Audio only | — | ✓ Visual karaoke |
| In-Reader Annotations | Highlights | ✓ | — | — | ✓ + AI notes |
| Annotation Export | — | Notion, CSV, etc. | — | Copy text | Notion · Obsidian · MD |
| Reading Analytics | Basic | — | — | — | ✓ Full dashboard |
| Works With Any Book | Amazon only† | ✓ | ✓ | ✓ | ✓ EPUB + PDF |
| PDF to EPUB Conversion | — | — | — | — | ✓ Columns, footnotes |
| Free Tier | Trial only | Basic free | — | ✓ Full free tier | 5 books · 5 AI/day |
| Price | $11.99/mo* | $9.99/mo | $11.58/mo | Free / $19.99‡ | $7/mo |
*Kindle Unlimited subscription. AI chat requires Amazon-purchased or Unlimited titles — not available for uploaded PDFs. †Kindle AI features limited to Amazon store titles. ‡NotebookLM free tier available; $19.99/mo for Pro. Speechify Premium billed annually.
Academic Tools Built Into Your Reader
Citation generation, cross-reference navigation, figure galleries, and bibliography building — no other consumer ebook reader has these.
Citation Generator
One click to generate MLA, APA, or Chicago citations from any passage. Copy or export.
Cross-Reference Navigation
Jump between related sections, footnotes, and references within your book.
Figure Gallery
Browse all figures, diagrams, and images in an indexed catalog with context.
Bibliography Builder
Aggregate citations from highlights into a formatted bibliography. Export in any style.
Footnote Navigation
Navigate between footnotes and endnotes without losing your place.
Vocabulary Builder
Double-click any word. Get definition, pronunciation, CEFR level. Auto-save to flashcards.
Reading Analytics That Motivate
Streaks, goals, achievements, speed tracking, and activity heatmaps. Watch yourself become a better reader.
Tools that go where great books take you.
Track every character, follow every thread, and share the experience. Features no other reader offers.
Plot Timeline — Frankenstein
ChronologicalThe creature is brought to life; Victor flees in horror
The creature describes his abandonment and early wandering
Victor agrees to build a female companion
Elizabeth is murdered on their wedding night
Never Lose the Thread
Complex novels have complex plots. Chaptera generates a chronological or thematic timeline from your book — every major event, every character involved, with importance levels so you know what to re-read and what to skip.
- Chronological and thematic timeline views
- Importance levels and character involvement per event
- Spoiler-safe — only events from chapters you've read
- Generated from the text, not manually entered
Reading with Friends
Reading doesn’t have to be solo. See what your friends are highlighting, run a book club directly from the reader, and stay accountable with shared reading challenges.
- See friend highlights and notes in real time
- Shared annotations and group AI chat
- Book club mode with synchronized reading
- Reading challenges with progress leaderboards
- Public reading profiles and curated lists
Classic Fiction Club
3 members · Frankenstein
Sofia highlighted in Chapter 12
"It is a tale told by an idiot, full of sound and fury…"
Marcus finished the book
Reading Challenge
Finish by Sunday · You’re 2 chapters ahead
What Changes When You Read with Chaptera
“I asked Chaptera why two chapters seemed to contradict each other. It found the exact passages and explained the author’s shift in argument. I’d read that section three times and missed it completely.”
Sarah Kim
Medical Student
“I have ADHD. I used to lose my place every few paragraphs. Focus mode follows the line I’m on. I finished a full chapter without losing my place once. That has never happened before.”
Jamie Torres
Marketing Director
“The AI knew I was working through a specific argument across three chapters. I asked it to connect the dots — it pulled the thread better than my own notes had. That’s when I understood what context-aware AI actually means.”
David Reyes
PhD Candidate, History
“I've been building a reading list on decision-making for two years. I asked Chaptera which of my books covered cognitive biases and it searched everything I'd ever uploaded, cited three books I'd half-forgotten, and pulled the exact passages. That answer would have taken me an afternoon of notes. It took thirty seconds.”
Marcus Chen
Strategy Consultant
“I don’t read more books now. I read the same ones more carefully. I generated a quiz after chapter 3 and failed it — realised I’d been reading words without actually thinking.”
Alex Liu
VP of Product
“The quiz Chaptera generated from my highlights was harder than my actual exam question. I came out of that test knowing I truly understood the material.”
Maya Patel
Undergraduate, Psychology
“My daughter has dyslexia and always said reading feels like work. With the yellow overlay and OpenDyslexic font, she said — for the first time — that she wanted to keep reading.”
Lisa Wang
Parent
Start Free. Upgrade When You're Hooked.
Every plan includes all 4 reading modes, annotations, and cross-device sync.
The average reader using AI tools pays $30+/month across separate apps.
Read your first book deeply. All reading modes, highlights, and a taste of AI — enough to know if this changes how you read.
- 5 books in library
- 5 PDF conversions/month (columns, footnotes, formulas preserved)
- 5 AI questions/day
- All 4 reading modes
- Highlights & notes
Your AI reading partner for 25 books. Ask questions, generate flashcards and quizzes, and actually remember what you read.
- 25 books in library
- 15 PDF conversions/month (up to 900 pages)
- 30 AI questions/day
- AI summaries & quizzes
- Text-to-speech
- Vocabulary builder
No limits. Every book, every AI tool, every study feature. For readers who are serious about learning.
- Unlimited books
- 50 PDF conversions/month (up to 2,100 pages)
- Unlimited AI chat & study tools
- Full analytics & goals
- Academic tools
Frequently Asked Questions
Start Reading Smarter Today
95+ features. 4 reading modes. AI study tools no other reader has. Free to start.
Early access opening soon. Join the waitlist.