Episteme

• E-books: EPUB, MOBI, AZW3, and FB2.

• Documents: PDF, DOCX, ODT, and FODT.

• Plain Text & Code: Markdown (MD), HTML, and TXT files.

• Entertainment: Comic book archives.

How can I customize the look of my books?

You can adjust the display text to make reading comfortable for your eyes:

• Change the font sizes, line spacing, and paragraph gaps.

• Control the brightness directly inside your document.

• Import your own custom text styles using .ttf or .otf font files.

What are the available reading modes?

The app features two layout styles to fit your personal preference:

• Paginated View: Turns pages sideways, just like a traditional physical book.

• Continuous Vertical Scroll: Lets you glide straight down through pages for quick scanning.

• Two-Page Spread: View two pages side-by-side when using larger tablet screens.

Can I write notes and draw on my PDFs?

Yes. The app includes built-in sketch and typing tools specifically for your PDF documents:

• Draw or sketch directly on the page using a digital pen, fountain pen, or pencil.

• Highlight important sentences and erase mistakes instantly.

• Type out text notes anywhere on the screen.

• Export your edited PDFs with crisp, high-quality vector details.

Does it have a Text-to-Speech feature?

Yes. If your hands are busy or your eyes are tired, you can listen to your documents out loud:

• Listen using your standard built-in system voice engine.

• Connect to advanced cloud voices for a highly natural, human-sounding narration.

• Control your audio easily using simple playback shortcuts.

How does the library organization work?

You can keep a large digital book collection organized easily:

• Point the app to a specific folder on your device to automatically track and import files.

• Group your books into custom reading shelves and personalized collections.

• Sort your books by title, author name, or your current reading progress.

• Jump back into your recently opened documents with a single tap.

Are there smart search tools?

You can find phrases and words across giant textbooks without manual scrolling:

• Run a full-text search that indexes your large files safely in the background.

• Select, copy, and share text across all supported formats.

• Use built-in text recognition (OCR) to search through scanned or image-based PDFs.

How is my data privacy handled?

Your data stays entirely in your own hands:

• The core application works 100% offline without requiring a user account.

• No personal reading data or files are ever shared with third-party networks.

• Advanced smart features temporarily process data on your device without storing it on external servers.

What features come with the Pro version?

While the main app is free, you can choose a one-time Pro upgrade to unlock advanced tools:

• Smart Tools: Get instant definitions for complex words and automatic summaries of chapters or pages.

• Cloud Sync: Securely link your private Google Drive to sync your books, bookmarks, shelves, and page progress across multiple devices.