KO Reader Downloads & RevenueKO Reader · App Store
KO Reader is #67 in Books Paid in United States and charting in 1 of 30 countries we track.
Updated 8 Nov 2026 · rankings refresh through the day
24 Sep 2026Full timeline · 23 events
- 📈KO Reader entered the top 10Top Paid · Books · GB
- 📈KO Reader entered the top 10Top Paid · Books · DE
- 📈KO Reader entered the top 100Top Paid · Books · GB
- 📈KO Reader charting in a new countryUnited Kingdom
- 📈KO Reader entered the top 10Top Paid · Books · IT
- 📈KO Reader charting in a new countryItaly
- 📈KO Reader entered the top 10Top Paid · Books · CA
- 📈KO Reader charting in a new countryCanada
- 📈KO Reader entered the top 10Top Paid · Books · AU
- 📈KO Reader charting in a new countryAustralia
- 📈KO Reader entered the top 100Top Paid · Books · DE
- 📈KO Reader entered the top 10Top Paid · Books · US
- 📈KO Reader entered the top 10 in 2 chartsTop Paid · Books · BR · Top Paid · Books · SA
- 📈KO Reader charting in a new countryBrazil
- 📈KO Reader entered the top 100Top Grossing · Books · BR
- 📈KO Reader charting in a new countrySaudi Arabia
- 📈KO Reader entered the top 100Top Grossing · Books · SA
- 📈KO Reader charting in a new countryChina
- 📈KO Reader entered the top 10Top Paid · Books · KR
- 📈KO Reader charting in a new country in 2 chartsGermany · South Korea
- 🆕KO Reader first spotted by AppInsider#64 in Top Paid · Books · United States
- 🆕KO Reader released on the App Store
- 📦KO Reader version 1.0No release notes
Collected from the stores by AppInsider since we first spotted the app. Dates are when we saw each change.
Books PaidKO Reader at a glance
AI summary written from our chart and store data, 2026-10-02. It can be wrong: check the numbers above.
KO Reader is a privacy-focused text-to-speech app that converts web articles, ebooks, and PDFs into natural AI voices entirely on-device for users seeking offline, subscription-free listening. The app shows strong traction in Brazil and South Africa Books Paid charts (#3 and #4 respectively) but remains niche in the US market at #87, indicating regional success driven by its local processing model rather than broad global adoption.
Similar apps: Speechify, NaturalReader, Voice Dream Reader
KO Reader on the App Store
App details
KO Reader downloads
Worldwide, per day, and installs to date. The band is open; the exact number is free with an account.
How this is calculated
Where KO Reader's downloads come from Modelled
Last 30 days: organic search, browsing the store, features and paid ads.
Active users
All platforms, worldwide. Free with an account.
How this is calculated
Where it ranks now
Every top chart it appears in across 30 countries.
| Country | Charts | Rank |
|---|---|---|
| United States | BooksPaid | #67 |
Apps near KO Reader on the chart
Books Paid, around #67.
Ratings
App Store, worldwide.
Review momentum
ⓘ How we measure thisReview momentum (0-100) blends how fast the app collects ratings compared with other apps in its category (60%), whether that pace is speeding up (25%) and what recent raters give it (15%; recent stars well below lifetime pull it down). Ratings counts are read daily. A jump usually means a launch, a feature, ads or a new review prompt.
What users say about KO Reader
From recent reviews.
About KO Reader
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).