Aozora Bunko Reader

Enjoy Aozora Bunko classics in an easy-to-read horizontal layout.
Includes automatic ruby, TTS, full-text search, offline downloads, passage recording, personal files, random previews, and an author-style quiz.
* Most works are in Japanese.

[Comfortable Reading]
Tap either side or swipe to turn pages; tap the center for controls.
• Show/hide ruby
• Add missing readings with UniDic and Aozora Bunko catalog data
• Show added ruby in the normal color or red
• Gothic/Mincho fonts; adjustable weight, text/ruby size, spacing, and margins
• Automatic line fitting, fullscreen, and position saving
• Six themes: white, sepia, green, dark, gray, and AMOLED black

[Text-to-Speech]
Listen with your device's TTS engine.
• 0.5x–3.0x speed plus voice/pitch controls
• Modernized historical-kana pronunciation and auto-ruby readings
• Page tracking, auto-start, and background playback

[Find Works]
Search authors, works, saved works, and saved full text together.
• Kana, kanji, and romaji
• All words, any word, or exact match
• Excluded terms and author filters
• Jump from in-work results to the matching page
• Search history; sort by relevance, hit count, and more

[Discover New Works]
Random Preview shows saved passages; swipe between works or listen with TTS.
Browse/save the top 500 works in the 2022 Aozora Bunko XHTML ranking.

[Absolute Style Sense Quiz]
Read a saved passage and guess the author.
• Set author conditions and passage length
• Open the source or more works by that author
• Share question images and answers

[AI and Translation Prompts]
Create editable prompts for external AI services from work details or selected text.
Split works into 1,000-, 2,000-, or 5,000-character sections and copy/share a translation prompt or plain text.
* The app does not send text to AI or generate answers.

[Record Passages]
Save selected passages on-device with their sources.
• Organize/search by date, author, or work
• Reopen the matching source position
• View recorded, accessed, and last-opened times
• Back up/merge as JSON or export as CSV/Markdown
* Stores selected source passages and history, not personal notes.

[Read Offline]
Downloaded works remain available offline.
• Favorite authors and works
• Download/delete all works by an author
• Organize, sort, filter, and view progress/history
• Work-card text previews
• Download every work with available text
* Downloading all works may take hours and require several GB.

[Your Text Files]
From Settings, open txt, tex, html, md, json, csv, and other text files with the same display options and TTS.
The latest 20 files and positions stay on-device; files are not added to the work database.

[Reading Controls]
• Jump by chapter or heading
• Automatic page turns every 5–60 seconds
• High-speed SpeedFlip
• Volume-button page turns
• Reversible left/right tap directions
• Long-press to select, record, copy, share, or search
• Share progress
• Change display settings while reading

[Catalog and Filters]
• Update the catalog; filter by NDC, publication/source-edition year, character type, saved status, and more
• Sort by work count, birth/death year, title, and more
• Favorites-only view
• Author, publication, edition, and other bibliographic details

[20 UI Languages]
Japanese, English, Simplified/Traditional Chinese, Korean, Thai, Vietnamese, French, Indonesian, German, Spanish, Portuguese, Italian, Hindi, Russian, Turkish, Polish, Ukrainian, Malay, and Dutch.

[Accessibility and Privacy]
Screen-reader descriptions, guides, reversed controls, and volume-button navigation are included.
No account is required. Positions, favorites, downloads, histories, recorded passages, and settings stay on-device.
The app never automatically sends recorded passages or personal files.

Enjoy Aozora Bunko your way.