LEWIS CARROLL
Down, down, down.
Would the fall never
come to an end!
♡ ↗Example · SagaBook
Keep a story with you — as an illustration, a favourite quote or a little reading victory. Scenes, translation, voice and Book Codex in one reader.
Three ways to check the meaning and keep reading. Switch modes to explore the example.
Compact translations sit right beneath each word.
A full-line translation alongside the original.
Hold a word in the app. In this demo, click the highlighted word.
The reader has grown beyond scene images. The current build combines progressive book understanding, public-domain discovery, language tools, voice and sharing.
Search Project Gutenberg from SagaBook, filter by book language and download an EPUB directly into your library.
Explore characters and places for the current scene, review available details and save your own visual direction.
Use the passage, available scene context and your saved character choices to guide a new illustration.
Use free device speech, or AI narration that can use a character voice profile when the speaker is actually known.
Interlinear help, word lookup, paragraph translation and bilingual reading reveal translation only when you need it.
Scene-aware atmosphere, reading milestones, quotes and images turn reading progress into moments worth keeping or sharing.

Tap +, choose Public Library, search by title or author and keep the language filter next to search. Books remain separate editions by language.
Public Library books are sourced from Project Gutenberg. SagaBook is not affiliated with or endorsed by Project Gutenberg. Copyright status can vary by country.
Project Gutenberg ↗Who is this person? Where are we? What has changed? Book Codex brings together characters, places and details from analysed scenes — and gives your illustrations a story to follow.
See yourself in the storyIllustrative character card
Fictional example, not an analysis of a published book. Real cards may have missing details.
Personalisation changes image instructions. It does not rewrite the book or its recorded facts.
Open character and place cards to revisit the details discovered so far.
View the context for a selected scene. Cards grow as more of the book is analysed.
Adjust a character’s appearance or a place’s description. Your choices are stored separately from book facts.
Scene details guide illustration requests; known character profiles can also inform AI voice selection.
Book evidence and contextual inferences are labelled separately. Missing information remains visible as unknown.
Choose a character in Book Codex, add your photo and create an illustration with your own visual casting. The scene still supplies the setting, clothes and action unless you change them.




AI-created demonstration with fictional adults. These are illustrative examples, not captures from the app; generated likeness and scene details can vary.
Open Book Codex and select a character in the scene.
Use the camera or gallery, then choose where your change applies.
Request a new image with your saved choices and the selected style.
In the app: Book Codex → character → photo → create an image
Adding a photo does not generate an image. New illustrations use the AI allowance shown in the app.
Choose a visual direction while SagaBook keeps the scene and revealed book context consistent.




Read for free. Choose a monthly plan for book analysis, illustrations and AI narration.
Read your books, use basic translation and listen with device speech. No subscription needed.
A first step into AI reading.
US$3.99/ month
Per paid monthly period
For regular reading and discoveries.
US$8.99/ month
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More books, with AI narration.
US$19.99/ month
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Our largest creative allowance.
US$39.99/ month
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New plans are rolling out. Purchase only an offer available in your app. Reference prices are in USD for the US; local prices, availability and the exact terms appear in the app store before payment. Existing paid periods keep their granted allowances. Daily and weekly limits also apply; see Plans and limits in the app.
Top up separately and confirm each eligible operation before spending. Buying a pack does not reset your plan counters.
The app shows the cost and asks for confirmation before using purchased TokenBooks. Service safety and overall availability limits still apply.
Pro includes 50,000 characters and Ultra 100,000 per paid monthly period. TokenBooks do not convert into voice characters. Device speech does not use this allowance.
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