AI summary
Offline-first document and e-book reader supporting PDF, EPUB, MOBI, DOCX, and more. Features paginated and scroll reading, PDF annotations with ink and text tools, library organization, and TTS. Open source under AGPLv3. Recent updates add two-page spread support, ruby annotations, lasso tool for ink editing, and breadcrumb shelf navigation.
Generated by AI. May contain inaccuracies.
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About this app
Episteme Reader
A modern, offline-first, privacy-focused document and e-book reader for mobile and desktop, built with Kotlin Multiplatform and Compose.
Core Features
Available across supported editions unless noted in the edition table:
Formats: PDF, EPUB, MOBI/AZW3, FB2, DOCX, ODT/FODT, TXT, Markdown, HTML, and comic archives. Reading modes: Paginated reading, vertical scroll, PDF multi-tab reading, PDF reflow, auto-scroll, and musician mode. PDF tools: Ink annotations, highlighting, erasing, text annotations, and reading-focused PDF controls. Customization: App themes, reader themes, custom local fonts, typography controls, spacing, margins, and layout tuning. Library tools: Local folder sync, library organization, bookmarks, progress tracking, and file management. Accessibility: System text-to-speech, app language selection, and reader settings that adapt to different reading preferences.
License
GNU Affero General Public License v3.0
What's new
- Here's what's new.
- EPUB & paginated reader
- Added two-page spread support on mobile with customizable spread gaps, spine crease animations and refined page curls.
- Added ruby annotation (furigana) support in EPUB pagination.
- Fixed EPUB 3 series collections and prefixed OPF metadata tags.
- Fixed MOBI chapter splitting issues inside HTML tags.
- Enhanced author color contrast fixup for WebView rendering.
- PDF reader & annotations
- Added an ink selection and editing tool, lasso, with support for movement, rotation, and scaling.
- Implemented rich text paragraph alignment (left, center, right, justify) and lists for text annotations.
- Supported exporting single-point ink annotations as dots.
- Optimized PDF thumbnail rendering and mapping in the pages drawer.
- Library
- Added breadcrumb navigation for shelves.
- Text-to-Speech (TTS)
- Added support for filtering favorite TTS voices.
- Added customizable voice preview text in TTS settings.
- OPDS
- Improved OPDS URL handling and stream security.
- Updated Android network security configuration.
- Localizations
- Updated localizations
- Stability & fixes
- Fixed application crashes and stability issues.
About this version
- Version
- 1.0.56-oss (61)
- Size
- 25.87 MB
- Requires Android
- 8.0
- Target SDK
- 26
- Architecture
- armeabi-v7a, arm64-v8a
- Downloads
- 24
- Updated
- Sep 28, 2026
- Package
- com.aryan.reader.oss
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