OL Reader

Listen to your EPUB library with on-device neural TTS. Zero cloud, complete privacy.

OL Reader transforms your EPUB library into a personal listening experience powered by on-device AI. Import your favorite books and let the built-in Kokoro neural text-to-speech engine read them aloud with stunningly natural voices — no internet connection required, no subscriptions, and complete privacy.

Whether you're commuting, cooking, or resting your eyes, OL Reader makes your entire ebook collection accessible as spoken audio. The AI runs entirely on your device using Apple's MLX framework, delivering high-quality narration without sending a single word to the cloud.

Key Features:

• On-Device AI Narration — Kokoro neural TTS produces natural, expressive speech that sounds remarkably human. No network needed. • Multiple Voice Options — Choose from a variety of voices to find the perfect narrator for every book. • Smart Library Management — Import and organize your EPUB collection with ease. Browse covers, search titles, and pick up right where you left off. • Memory-Efficient Reading Engine — An advanced chunking system with intelligent prefetching keeps scrolling buttery smooth, even for thousand-page novels. • Seamless Read & Listen — Follow along visually with real-time text highlighting as the AI reads, or simply close your eyes and listen. • Privacy First — All processing happens on your iPhone or iPad. Your books and reading habits never leave your device. • Robust Text Handling — Gracefully handles complex Unicode, special characters, and even poorly formatted EPUBs without skipping a beat.

OL Reader is perfect for avid readers who want hands-free access to their personal library, anyone with visual accessibility needs, language learners who benefit from hearing text read aloud, or multitaskers who want to enjoy books while on the go. Turn every moment into reading time — your books have never sounded this good.