Episteme Android v1.0.51-oss

Here's what's new

Reader and navigation

• Added search inside the Table of Contents
• Improved native vertical reader loading and prefetching
• Improved paginated reader restoration and page count caching
• Fixed text cutoff in pagination mode
• Pinned PDF top bar actions to the trailing side

Highlights and annotations

• Added more highlight styles like underline and strike through
• Added support for custom highlight colors in epub reader
• Fixed custom highlight colors persistence in PDF export
• Added support for exporting annotations as Markdown and plain text

Library and book management

• Added EPUB cover image editing
• Added support for deleting tags from the library
• Added bulk “Add to Shelf” in selection mode
• Improved selection mode UI in Home and Library screens
• Fixed recent books ordering so they stay sorted by recency
• Fixed custom book renaming and title resolution for PDF and comic files
• Pre-filled the rename bookmark dialog with the current title

Fixes

• Fixed crashes and ANRs
• Fixed premature TTS stream transitions
• Added retry handling for missing TTS chunks

Episteme Android v1.0.50-oss

Here is what is new in this update:

Major Changes

• Continuous Vertical Scrolling
  The EPUB reader now features a continuous vertical scrolling variation. It runs on the same custom engine that handles pagination, allowing you to scroll seamlessly through an entire file without breaking pages.

  reader screen > more > reading mode > vertical (native)

• Temporary External File Viewing
  We added a "Temporary" option for external file behavior. When opening a file from an email or external file manager, it will open a standalone instance of the reader. This allows you to read the document without permanently adding it to your app storage.

  home > more > external file behavior > temporary

• Visual Word Replacement
  Added a new feature that allows you to visually replace specific words directly within the text of the books you are reading.

  reader screen > more > book word replacement

Improvements & Additions

• CBT Support: Added full support for reading CBT files.
• Better Custom Fonts: You can now select multiple font files at once from the file picker when importing. The app also now detects and properly uses font file variations.
• Quick Share & Save: You can now easily share or save any file directly from the home screen or library by long-pressing the item.
• Fixes: Addressed several underlying bugs and crashes to improve overall stability.

Desktop v1.0.1

What's New

Episteme Reader desktop builds are now available for Linux.

Standard vs OSS

The standard build is the full-featured desktop version. It may include proprietary libraries or service-backed features such as AI, cloud sync, online font downloads, OPDS/catalog features, and account-based functionality.

The OSS build is fully offline and open-source focused. It does not include online/service-backed features such as OPDS, Google Fonts download, AI features, or cloud features.

Downloads

• episteme-standard-1.0.1-windows-x64.msi - standard Windows build
• episteme-oss-1.0.1-windows-x64.msi - OSS/offline Windows build
• episteme-standard-1.0.1-linux-amd64.deb - Debian/Ubuntu build
• episteme-oss-1.0.1-linux-amd64.deb - OSS/offline Debian/Ubuntu build
• episteme-standard-1.0.1-linux-x86_64.rpm - Fedora/RPM build
• episteme-oss-1.0.1-linux-x86_64.rpm - OSS/offline Fedora/RPM build
• episteme-bin-1.0.1-1-x86_64.pkg.tar.zst - Arch package
• episteme-oss-bin-1.0.1-1-x86_64.pkg.tar.zst - OSS/offline Arch package

Arch / AUR

Arch users can install from the AUR using an AUR helper such as yay:

yay -S episteme-bin

yay -S episteme-oss-bin

Windows v1.0.1

Here's What's New

Episteme Reader for Windows is now available for wider release.

This update focuses on making the Windows app feel much more complete, polished, and closer to the Android version.

What's new

Library overhaul

The library screen has been redesigned and improved for desktop use, with better organization, shelf management, folder handling, and smoother navigation.

Reader overhaul

The reader screen has received a major UI/UX overhaul, with cleaner controls, improved navigation, better desktop interactions, and a more polished reading experience across formats.

Google sign-in and cloud sync

Google sign-in is now available in the standard Windows version.

With sign-in, cloud sync is also available, including support for syncing your library, reading progress, bookmarks, highlights, and other reading data across devices.

More features from Android

Several features from the Android app have been brought over to Windows, including better reader themes, more customization options, multiple reading modes, improved highlights and annotations, TTS improvements, and better support for desktop workflows.

Stability and performance

This release also includes many performance, reliability, sync, and other improvements.

Downloads

• Episteme-1.0.1-x64.msi — standard Windows build
• Episteme.oss-1.0.1-x64.msi — open-source Windows build

Episteme Android v1.0.49-oss

Here's what's new

Better TTS controls

TTS now has proper playback controls for moving between chunks. You can skip ahead or go back to previous chunks from both the TTS overlay and the notification panel.

There is also a new minimal app-wide TTS control overlay, so you can control playback even after leaving the reader screen.

EPUB image gallery

EPUB books now have an image gallery(in sidebar last tab), with an option to download images.

PDF annotation export

Ink annotations, pen marks, highlights, and text-selection highlights are now actually embedded into PDF files when shared or saved.

PDF now has support for embedded nested comments via text select highlight.

Reader improvements

• Added app-wide font selection
• Added one-hand zoom gestures in the PDF viewer
• Added file info option for PDF and EPUB books inside reader screen
• Added brightness control for PDF and EPUB readers
• Improved PDF performance

New languages

Added Japanese, Korean, and Dutch translations.

Fixes

Several crashes and reader bugs were fixed.

Episteme Android v1.0.48-oss

Here’s what’s new

Highlights

• Added PPTX support in beta.
• Added new app languages:
  • Hindi
  • Spanish
  • Simplified Chinese
  • Italian
  • Polish
  • Vietnamese
  • Brazilian Portuguese
  • Belarusian
• Added search in the language selection dialog.
• Added a system default option for app language.
• Added a main settings entry on the home screen, so global settings are easier to access.

Reader improvements

• Added jump history in the EPUB reader, with back and forward navigation.
• Added right-to-left pagination support.
• Added right text alignment support for EPUB reading.
• Added screen orientation controls for EPUB and PDF readers.
• Added embedded EPUB metadata editing.

Customization and TTS

• Added custom Text-to-Speech word replacements.
• Added a reset option for toolbar customization.

Fixes/Improvements

• Added many bug, crash, stability, and general improvement fixes.
• smaller apk size(-5 mb)

Episteme Windows v1.0.0-beta

Episteme for Windows (Beta)

This is the first public Windows beta release of Episteme.

This release includes MSI installers for both editions:

• Episteme
• Episteme OSS

Editions

Episteme

Episteme is the full edition of the app. It includes the same core reading experience as Episteme OSS, along with online and proprietary features.

Episteme OSS

Episteme OSS is the open-source, offline-focused edition. It provides the core reading experience without online features or external service integrations.

The following online features are not available in Episteme OSS:

• Google Fonts
• OPDS

Beta Notice

This is a beta release for Windows. Some platform-specific issues may still exist, and feedback is welcome.

Please report Windows-related bugs or installation issues through the project’s issue tracker.

Installation

Download the MSI installer for the edition you want to use:

• Use the Episteme MSI for the full edition.
• Use the Episteme OSS MSI for the open-source offline edition.

Episteme v1.0.47-oss

Here's what's new

• Bring Your Own Key support (OSS only)
  OSS builds now support using your own key for AI features and Gemini-based cloud TTS.

  First add a Groq or Gemini key in home screen > AI key and Models to unlock these options in reader.

• Reader textures
  Added page texture support with transparency control, so textures can work alongside your existing page and text colors.

  Under the reader > top toolbar > pallet icon

• More reading customization
  Added vertical margin control and toolbar organization.

• Improved PDF navigation
  The PDF jump list/history is now bi-directional with improved UI.

• Faster local folders
  Local folder loading and syncing got some optimizations, especially for larger folders.

• Performance optimizations
  Home screen and library screen are now smoother to use.

• Other fixes
  Includes crash fixes, bug fixes, and general stability improvements.

Episteme v1.0.46-oss

Here's what's new

Shelves got a big upgrade

Shelves now support/pairs with tags and auto generation based on folder and series.

Bubble Zoom (beta) (Playstore version only)

Bubble Zoom: Uses on-device ML model, option to download on first use.

Model link: https://huggingface.co/1m4ryan/speech-bubble-detector

PDF improvements

• Pages' thumbnail tab in drawer
• Jump-back navigation
• Tap-to-turn pages
• Zoom reset

EPUB improvements

• New UI for formatting settings with more options
• Adjustable horizontal margins
• Adjustable image scaling

Text-to-Speech

• Fixed playback stability
• Better sync and voice management across EPUB and PDF readers

New languages support

• French
• Russian

Other stuff

• Google Fonts browser: search and download fonts directly in the app

Home screen > sidebar > custom fonts

• Calibre metadata support
• Various crash fixes and other improvements

Episteme v1.0.45-oss

Here's what's new:

Note: Version skip to sync with the Playstore version

Custom App Theming

A new theming system has been added. You can now customize app-wide color, contrast and text brightness.

Home screen > Top bar > Palette icon

Interactive Footnotes

Footnotes are now supported and interactive in EPUB reader.

Visual Options

Visual Options settings in now available in PDF reader as well, allowing you to hide or sync the System UI(status and navigation bar) with the reader toolbars.

More > Visual Options

Languages

Turkish, German and Arabic are now available through the new in app language settings.

Home screen > more > Language

More Features

• Added an option to preserve original image colors when applying PDF themes.
• TTS now automatically skips blank pages and handles chapter transitions more smoothly in pdf.
• PDF titles and authors are now extracted from file metadata.

Improvements

• Smoother page turn animations in paginated EPUB mode.
• Better dragging and scaling for PDF text boxes across different zoom levels.
• UI updates for the library and home screens.
• Faster app startup.