KO Reader
No in-app products collected for this app.
| Rating | Price | |||
|---|---|---|---|---|
| United States | 75%3 | 3.67 | $3.99 | |
| Jamaica | 25%1 | 3.00 | $3.99 | |
| United Arab Emirates | <1%0 | — | AED 14.99 $4.08 | |
| Afghanistan | <1%0 | — | $3.99 | |
| Antigua And Barbuda | <1%0 | — | $3.99 | |
| Anguilla | <1%0 | — | $3.99 | |
| Albania | <1%0 | — | $4.99 | |
| Armenia | <1%0 | — | $4.99 | |
| Angola | <1%0 | — | $3.99 | |
| Argentina | <1%0 | — | $3.99 |
Description
KO Reader turns web articles, ebooks, and PDFs into natural-sounding speech — entirely on your device. No cloud, no tracking, no subscriptions.
Paste a URL or open an EPUB or PDF, and KO Reader reads it aloud with a neural AI voice. Everything runs locally, so your reading stays private and works anywhere — on the train, on a plane, or off-grid. Export your favorite articles or books to m4a or m4b files.
WHAT YOU CAN READ
Web articles — Wikipedia, news sites, blogs, and Substack
Fanfiction — Archive of Our Own, Royal Road, and Wattpad, with chapter detection
EPUB ebooks with full chapter navigation
PDF documents
Plain text — paste or type any content
Safari Share Extension — send articles to KO Reader with one tap
NATURAL AI VOICES
53 neural voices across 9 languages: American and British English, Spanish, French, Italian, Portuguese, Japanese, Mandarin, and Hindi
Preview any voice before selecting it
Mark favorites for quick access
Playback speed from 0.5x to 2.0x
Smart heteronym resolution — the voice knows the difference between "lead" (the metal) and "lead" (to guide), "wound" (injury) and "wound" (past of wind)
Custom pronunciation dictionary — teach the reader how to say names, jargon, or anything you like
READ YOUR WAY
Reading queue — line up multiple articles and auto-advance
Bookmarks — save passages to come back to
Reading history — pick up where you left off, across books and articles
Chapter pre-generation — book chapters start instantly, no waiting between them
Audio export — save generated audio for offline listening
Adjustable article font (system, serif, monospaced, rounded) and Dynamic Type support
BUILT FOR ACCESSIBILITY
Full VoiceOver support with labeled controls throughout
Haptic feedback on transport controls and sleep timer
Background audio — listen while you use other apps or with the screen off
Sleep timer — stops playback when you drift off
Works with AirPods, Bluetooth speakers, and CarPlay
RUNS EVERYWHERE
Universal app for iPhone, iPad, and Mac
macOS keyboard shortcuts (Space to play/pause, Cmd+← and Cmd+→ to skip)
Optimized for Apple Silicon with optional CoreML acceleration
Adjustable CPU thread count for performance tuning
PRIVACY FIRST
100% on-device TTS — your content never leaves your phone
No accounts, no analytics, no tracking, no ads
No internet required after the one-time model download
Reading progress stored locally only
KO Reader downloads a ~350 MB neural voice model on first launch. After that, everything works fully offline.
Powered by the open-source Kokoro TTS model (Apache 2.0).