Koe Reader: AI Book Narrator

Turn any EPUB or PDF into something you can read, listen to and understand Koe Reader creates natural-sounding narration directly on your iPhone. There’s no account, subscription, advertising or cloud upload. Your books, highlights, reading progress and generated audio stay on your device. READ AND LISTEN TOGETHER Move naturally between reading and listening. Koe follows your position, highlights the sentence being spoken and lets you continue exactly where you stopped. UNDERSTAND DIFFICULT PASSAGES On supported Apple Intelligence devices, highlight text and ask Koe to explain it, summarize the argument, define difficult terms or identify the key idea. You can also simplify dense writing at different levels. The clearer version appears inside the book as you read, and you can restore the original whenever you want. NATURAL ON-DEVICE NARRATION Choose from a collection of distinct narrators, adjust playback speed up to 2× and keep listening with smooth, pre-generated audio. Focus Mode dims the surrounding text so you can follow the active sentence without distraction. PRIVATE BY DESIGN Narration and supported reading intelligence features run on your device. Your documents are not uploaded to external servers for processing. MADE FOR REAL BOOKS Koe improves EPUB headings, quotations and chapter spacing while preserving the character of the original book. Search for words or entire pasted passages, save highlights and quickly return to moments worth remembering. FEATURES • Import EPUB and PDF documents • Natural on-device AI narration • Multiple narrator voices • Ask questions about selected passages • Simplify difficult writing at different levels • Synced sentence highlighting • Focus Mode for distraction-free listening • Adjustable playback speed up to 2× • Smooth narration with audio prepared ahead • Book and chapter progress • Search across words and longer passages • Bookmarks and highlights • Background playback • Light, dark and system appearance • No account, subscription or advertisements Whether you’re working through a difficult nonfiction book, revisiting a novel or listening while travelling, Koe helps you stay inside the story. Import a book, press play and keep reading wherever you go.