Episteme

Releases

• Sep 28, 2026 1.0.57-oss
  # What's Changed ### Text-to-Speech & AI * Added Fish Audio TTS integration and REST-based Cloud TTS. * Added language filtering, favorite voices, and pre-generated audio sample previews for Cloud TTS. * Added independent TTS voice settings for the Listen feature. * Enabled BYOK (Bring-Your-Own-Key) AI model overrides across all online builds. * Bypassed credit checks for BYOK AI and TTS features. ### PDF Reader & Annotations

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  * Added side-dock support for PDF annotation and text toolbars. * Added paragraph alignment and bullet/numbered list support to PDF text boxes. * Added action menu and position locking for PDF text boxes. * Retired legacy page rich text editing on Android in favor of text box annotations. * Improved PDF text box tap hit detection. * Fixed PDF text box alignment, list toggle selection, and IME state handling. * Fixed PDF two-page spread zoom tiling issues. * Improved PDF tool dock overlap handling and side wheel scrolling. * Optimized stroke drawing performance and gesture handling. ### Reader & UI Improvements * Added right-to-left (RTL) pagination support for realistic page curls. * Added support for bundled reader fonts. * Added back button navigation to error states. * Improved drawer sheet layout. ### Performance & Security * Optimized app startup time and background workers. * Optimized Compose UI performance, touch hit targets, and artwork loading.
• Sep 24, 2026 1.0.56-oss
  # 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

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  - 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.
• Sep 7, 2026 1.0.55-oss
  # Here's what's new ### PDF reader - Text annotations toolbar is not draggable. - Reader themes now apply to page thumbnails in the navigation sidebar. - Text selection handles are now vector-based instead of rasterized bitmaps. ### Markdown and math

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  - Replaced the markdown parser (Flexmark) with md4c and added LaTeX math support. - Inline math now renders within text paragraphs. ### OPDS - Preemptive Basic authentication is now sent for OPDS stream requests. ### TTS - Fixed TTS session lifecycle callbacks running on the wrong thread. ### Stability - Fixed ANRs, OOMs, and other crashes. - General app stability and performance improvements.
• Sep 1, 2026 1.0.54-oss
  # Here's what's new ### PDF reader - Split view: read two pdf files in split reader screens. - Realistic page turn animations. - Added more reverse color modes. - Fixed double-tap zoom. - Jump history now captures live reader positions. - Fixed theme redraw invalidation, text box annotations, and bookmark persistence.

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  ### EPUB reader - Added option to hide images in books. - Fixed pagination typography overrides to match WebView behavior. - Fixed document collapse from publication root-height rules. - Fixed text colors breaking OpenType shaping. ### Cloud sync - Cloud sync now supports local folders: books, progress, bookmarks, highlights, and annotations sync across devices. - New cloud folder management screen. ### Annotations - Added JSON and CSV annotation export options. ### TTS - Pinned media notifications during playback. - Fixed media button routing and playback anchoring. - PDF TTS now joins hyphenated line breaks. ### Other - Added support for legacy text encodings. - Fixed EPUB 3 collection and MOBI series metadata. - Fixed RTL layout in Library Beta continue card. - Crash fixes and general stability improvements.
• Aug 13, 2026 1.0.53-oss
  # Here's what's new ### Introducing Listen * The new **Listen** section brings audiobooks and eBook listening together in one place. * Import and play MP3, M4A, M4B, AAC, OGG, Opus, and FLAC audiobooks. * Turn supported eBooks into audiobooks using text-to-speech. * Follow playback with a transcript view and live reading progress. * Control playback through a dedicated player UI. * Set a sleep timer.

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  * Improved playback lifecycle and TTS engine reliability. ### Library improvements * Refined the beta library interface and integrated Listen into the unified library. * Improved book metadata extraction and tracking of when books were added. ### EPUB reader improvements * Added font weight and letter spacing customization. * Added the current time to the reader progress bar. * Improved CSS style resolution in paginated mode. * Improved footnote handling across reader modes. * Improved nested lists and list-marker rendering. * Improved paginated navigation and fixed stale pagination caches. ### PDF improvements * Improved vertical reader layout and scroll stability. * Hardened annotation sidecar merging and folder synchronization. * Improved handling of embedded PDF comments. ### Other improvements * Improved OPDS download filenames and matching downloaded books with local library entries. * Includes additional UI, performance, and stability improvements. * crash fixes