AI summary
An open-source, privacy-focused e-book and document reader. It supports a wide range of formats including EPUB, PDF, MOBI, and FB2, and features rich PDF annotation tools, text-to-speech support, and highly customizable reading modes.
Generated by AI. May contain inaccuracies.
Screenshots
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
- 9
- Updated
- Sep 28, 2026
- Package
- com.aryan.reader.oss
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Ratings & reviews
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