Read Smarter.
Understand Deeper.
Remember What Matters.
For readers who want more from every book.
AI makes you faster at consuming information. It should make you better at understanding it.
Private beta. Invitations go out in small batches. The first 50 invitations include free Pro through the end of the year.
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.
Your Notes Leave With You
Highlights, flashcards and study guides export to Markdown, JSON, CSV, Notion or Obsidian — in the format your flashcard app expects. Nothing you write here is trapped here.
4 Reading Modes
Focus, Bionic, Speed Reading, and Dyslexia Friendly modes. All auto-hide panels for zero distractions.
From the founder
“The friction isn’t a bug. It’s where the learning is. This is not a tool to drop hundreds of documents into and let the AI distill them. This is for people who want to read more — and actually understand what they read.”
Founder, Chaptera
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
- 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 passage it came from.
- 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
Chaptera generates quizzes, flashcards, study guides, character maps, plot timelines, and concept extractions — all from what you're actively reading, without switching apps. Then export directly to Notion or Obsidian.
Active Recall System
- Quiz generation: multiple choice, true/false, short answer
- Flashcard generation from any selection or chapter
- Spaced repetition with SM-2 algorithm
Reading Intelligence
- 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 all of these.
Nothing stands between you and the text.
Standard
Clean, distraction-free reading with full typography control. All panels available. The baseline — and still better than most readers.
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 | Gemini Notebook | Chaptera |
|---|---|---|---|---|---|
| AI Book Chat | Store titles only^ | Highlights only | AI Summaries & Chats | Multi-doc | Full book RAG |
| Active Study Tools | — | Highlights review | — | — | Quiz · Flashcards · Vocab SM-2 |
| Study Guides | — | — | — | ✓ | ✓ |
| 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 Books You Own§ | Amazon only† | ✓ | ✓ | ✓ | ✓ Any DRM-free EPUB or PDF |
| PDF to EPUB Conversion | — | — | — | — | ✓ Columns, footnotes |
| Free Tier | Trial only | 30-day trial | ✓ Free plan | ✓ Full free tier | 5 books · 5 AI/day |
| Price | Subscription* | From $5.59/mo | $11.58/mo | Free / bundled‡ | From $9.99/mo |
*Kindle Unlimited subscription; Amazon does not publish its price without signing in, so we do not quote one. AI chat requires Amazon-purchased or Unlimited titles — not available for uploaded PDFs. †Kindle AI features limited to Amazon store titles. ^Cells marked with a caret describe widely-documented Kindle behaviour, but Amazon publishes no page we could cite for them — unlike every other claim here, they are not backed by a source we opened. Treated as unverified rather than dropped, because saying so is more useful to you than a blank cell. ‡NotebookLM was renamed Gemini Notebook (notebooklm.google now redirects to notebook.google). A free tier remains; paid access is bundled into Google AI Plus, Pro and Ultra rather than sold separately, and those plans are region-limited. Source limits per notebook: 50 free, 100 Plus, 300 Pro, 600 Ultra. Verified on notebook.google/plans, 25 September 2026. Readwise Lite $5.59/mo and Readwise $9.99/mo, both billed annually; Readwise is free for 30 days and has no permanent free tier (readwise.io/pricing). Speechify has a free plan; Premium is $29/mo monthly or $139/yr, which is the $11.58/mo shown (speechify.com/pricing). §Chaptera reads DRM-free EPUB and PDF files you upload; books locked to a store, including Kindle purchases, cannot be opened by any third-party reader. Competitor claims are logged in docs/marketing/CLAIMS_REGISTER.md §6 with a source and a date each. Last re-verified 25 September 2026.
Academic Tools Built Into Your Reader
Citation generation, cross-reference navigation, figure galleries, and bibliography building — inside the reader, not in a second app.
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.
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 most readers leave out.
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
Know Every Character
Dense casts, shifting alliances, long gaps between reads. Chaptera builds a character map from the text itself — every named figure, their role, importance, relationships, and arc, updated as you read.
- AI-generated from the text — no manual entry
- Role, importance score, and relationship links
- Filter by major, minor, or mentioned characters
- Spoiler-safe — only characters from chapters you've read
Character Tracker — Frankenstein
4 of 18 charactersVictor Frankenstein
Protagonist
The Creature
Antagonist / Protagonist
Elizabeth Lavenza
Victor's companion
Henry Clerval
Victor's friend
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 what your club is highlighting and noting
- Shared highlights and notes
- Book clubs reading the same book on the same schedule
- 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
Your notes leave when you do
Reading apps close. Pocket and Omnivore both did, and Quizlet removed flashcard export so people could not take their cards elsewhere. Everything you make in Chaptera exports, on every plan including the free one.
- Highlights and notesMarkdown, JSON, Notion, Obsidian
- FlashcardsCSV that Anki imports directly
- Quizzes and resultsCSV or Markdown
- AI conversationsMarkdown, JSON, PDF, or a shareable link
- Citations and bibliographiesMLA, APA, or Chicago
No export tier, no paid unlock, no waiting period.
Start Free. Upgrade When You're Hooked.
Every plan includes all 4 reading modes, annotations, and cross-device sync.
Speechify ($11.58/mo) + Readwise ($9.99/mo) + Anki — Chaptera replaces all three, starting at $9.99/mo.
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
- 300 AI questions/month (up to 10/day)
- 600 PDF conversion pages to get started
- 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
- 2,500 PDF conversion pages, +750/month — never expire
- Up to 900 pages per book
- 900 AI questions/month (up to 150/day)
- Unused AI questions roll over up to 2 months
- AI summaries & quizzes
- Unlimited read aloud
- Vocabulary builder
Every AI tool and every study feature, with twice the Plus question allowance. For readers who are serious about learning.
- 250 books in library
- 5,000 PDF conversion pages, +1,000/month — never expire
- Up to 2,100 pages per book
- 1,800 AI questions/month (up to 300/day)
- Unused AI questions roll over up to 2 months
- Unlimited study guides, timelines & character tracking
- Unlimited read aloud
- Full analytics & goals
- Academic tools
Frequently Asked Questions
Start Reading Smarter Today
4 reading modes. AI study tools built into the reader. Free to start.
Private beta. Tell us how you read and we’ll send an invite.