KeyReader vs Okuzeka
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
KeyReader
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Read your own books and understand every word Import your books and read in a foreign language with ease. Tap any word to translate instantly, save new words as flashcards, and explore each chapter through guided questions. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Okuzeka
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Learn a language through the books you already want to read. Okuzeka is an AI-powered reading companion that helps you understand books, PDFs, and EPUBs in another language. Tap any word to see its contextual meaning, translate difficult sentences, and save useful vocabulary as flashcards. Instead of studying isolated word lists, Okuzeka helps you learn from real sentences, real stories, and real ideas. What you can do with Okuzeka: • Read books, PDFs, and EPUB files • Understand words in context • Translate sentences with AI • Build your own vocabulary list • Create flashcards from words you discover • Personalize your reading with themes and fonts • Improve your language skills through active reading Whether you are learning English, German, French, Spanish, or another language, Okuzeka helps make reading easier, deeper, and more useful. Turn every page into a language lesson. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ https://okuzeka.com/privacy
Screenshots
Verdict
The clearest difference is update cadence: Okuzeka at every 4 days against KeyReader's every 3 weeks. Okuzeka also leads on device support (3 vs 1) and iOS requirement (15.0 vs 18.0). On price, ads and in-app purchases there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. KeyReader sells 3 in-app purchases, starting at $2.99 per month and Okuzeka sells 3 in-app purchases, starting at $9.99 per month. Whichever you choose, the download price is not the number that matters.
KeyReader ships an update every 3 weeks, Okuzeka every 4 days. The most recent releases landed on September 8, 2026 and September 10, 2026 respectively.
| Parameter | KeyReader | Okuzeka |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 3 weeks | Every 4 days — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Devices | iPhone | iPhone, iPad, iPod — better |
| Requires iOS | 18.0 | 15.0 — better |
| Further details — not scored | ||
| Size | 7 MB | 6 MB |
| Age rating | 4+ | 4+ |
| Developer | Oleg Strigunov | Ali Cetinkaya |
In-app purchases
KeyReader
- Unlimited Reading$2.991 Month
- Unlimited Reading3 Days trial$19.991 Year
- Unlimited Reading$49.99
Okuzeka
- Okuzeka Reader$9.991 Month
- Okuzeka Plus$19.991 Month
- Okuzeka Pro$39.991 Month
