Hearken: EPUB to Audiobook

Hearken turns the books you already have into audiobooks — EPUB, PDF, FB2, HTML, Markdown, or plain text. Import a file and a natural, on-device text to speech voice reads it aloud. No account, no cloud, and no internet needed after the one-time voice download.

Your library, your books
• Import EPUB, PDF, FB2, HTML, Markdown, and TXT files
• Real chapters from your ebook's table of contents, or automatic chapter detection
• Search inside a book or across your whole library
• Grid or list view — sort by recent, title, or author

A real audiobook experience
• Natural neural voice that runs entirely on your device
• Adjustable playback speed from 0.5× to 2×
• Skip by chapter, or rewind and fast-forward 15 seconds
• Sleep timer — 15, 30, 45, 60 minutes, or end of chapter
• Background playback with lock screen and notification controls

Follow along while you listen
• Read along: highlighting tracks each sentence as it's spoken
• Tap any sentence to jump the audio there
• Adjustable font size for comfortable reading

Stay motivated
• Daily and weekly listening stats
• Reading streaks
• Books completed and in progress

Private and offline
• The voice runs 100% on your device — nothing is uploaded, ever
• Your books never leave your phone
• Listen on a plane, on the subway, or completely off the grid

Great for
• Working through your ebook backlog while you commute, cook, or exercise
• Students and professionals listening to PDFs, papers, and notes
• Resting your eyes without losing your place in a book
• Accessibility — hear any document read aloud in a natural voice

Hearken is a text to speech reader and audiobook maker for your own files — an epub reader that reads aloud, a PDF voice reader, and an offline ebook listener in one.

Download Hearken and start listening to your library today.