Okuzeka helps you learn through real books.
You upload your own PDF or choose from our books, tap a word you do not know, see the meaning according to that sentence, and save it into flashcards if you want to review it later.
Reading experience
Read your own books
Okuzeka is not limited to short curated lessons. You can upload your own PDFs, read books from our catalog, and continue from where you left off inside the mobile app.
Can I upload my own PDF?
Yes. One of the main differences is that you are not restricted to the books we provide. You can upload your own PDF and use the same reader, contextual word meanings, flashcards, and review flow on that exact book.
Which file formats does Okuzeka support?
Okuzeka currently supports PDF and EPUB for the main reading flow. PDF files are prepared for reading through the Okuzeka converter, while EPUB files can be added more directly. TXT is not treated as a primary upload format in the current product experience.
Can I only read my own uploads, or does Okuzeka also provide books?
Both are available. You can upload your own library or choose from the books we provide. The product is built so that you decide what you want to read, instead of being forced into a fixed catalog.
Does Okuzeka remember where I left off, and can I customize the reader?
Yes. The mobile app is designed to continue from where you left off. You can also adjust theme, font, text size, brightness, and page navigation so the reading experience matches your preference.
Privacy and rights
Your files, privacy, and ownership
Because Okuzeka lets you upload your own books, privacy and rights matter. The product is designed around personal reading, not public file sharing.
Are my uploaded PDFs private?
Uploaded files are tied to your account and used to provide the reading experience, text extraction, word meanings, flashcards, notes, and reading progress. They are not shown publicly unless you use a feature that explicitly publishes or shares something.
Are my books used to train AI models?
Okuzeka does not use your uploaded books as a training dataset for its own model training. To answer a word lookup, the app may send limited context such as the selected word, sentence, and language settings to AI services so the requested meaning can be generated.
Can I upload copyrighted books?
You are responsible for having the right to upload and read any file you add. Personal lawful copies may be acceptable for your own use, but you must not upload, publish, sell, or distribute content if you do not have the rights to do so.
Is Okuzeka suitable for children?
Okuzeka is not designed specifically for children. If a child uses the product, it should be under the supervision of a parent or guardian, especially because users can upload their own reading material.
Word meaning
Context matters more than flat translation
This is the core difference. When you tap a word, Okuzeka does not stop at a flat dictionary equivalent. It looks at how that word is being used in the sentence.
What happens when I tap a word whose meaning I do not know?
When you tap a word, the meaning appears immediately. But it is not shown in isolation. The system checks the sentence context, explains the word according to that usage, and lets you keep reading without breaking the flow.
Does Okuzeka only translate isolated words?
No. If the meaning is carried by a phrase, the system tries to detect idioms, set expressions, and multi-word structures that should be understood together. That makes the result more accurate than a simple one-word translation.
Why are context-aware meanings so important?
Because the same word can mean different things in different sentences. Traditional translation tools often show a generic dictionary meaning. Okuzeka focuses on what the sentence is actually saying, so the result is more accurate and easier to trust while reading.
How accurate are the AI meanings?
AI meanings are designed to be helpful, context-aware reading assistance, not a perfect authority. They can occasionally be incomplete or wrong, especially with ambiguous sentences, unusual formatting, slang, or highly technical language. Treat the result as reading support and use your judgment for important material.
What is the difference between Smart and Smarter?
Smart is the standard contextual meaning flow used for normal reading. Smarter refers to a higher-capacity AI mode that may be used for harder lookups or more complex context when available on an account. Availability can depend on the current product plan and account settings.
Languages and learning
Choose the book language and the meaning language separately
You do not have to stay inside a single language route. You open a book in the language you want to learn and separately choose the language in which you want meanings to appear.
How many languages does Okuzeka support?
Okuzeka works across 50+ language options. That flexibility matters both for the language of the book you are reading and for the language in which you want the meaning shown.
Can the book language and the target meaning language be different?
Yes. That is exactly how the product is meant to work. You open a book in the language you want to learn, then choose your native language or any other target language for the meaning. When you tap a word, the explanation appears in the language you selected.
Why is Okuzeka different from normal language-learning apps?
Because it does not trap you inside short pre-selected lessons. You can learn through real books, including the PDFs you find yourself. That means you learn vocabulary in its actual context instead of in artificial exercises.
Review and getting started
Save words and revisit them later
The goal is not only to show a meaning once. While reading, you can save words into flashcards and return to them later for review.
Can I save words into flashcards and review them later?
Yes. You can save words you encounter while reading into your personal flashcards. Later, you can come back to them whenever you have time and review them again, so the word stays with you beyond a single reading session.
Why are flashcards stronger when they come from real reading context?
Because memorizing isolated words is usually weak. When a word comes from a real sentence in a real book, it is much easier to remember what it meant and recognize it again later.
Do I need a paid plan to start using Okuzeka?
No. You can start with Okuzeka for free. You can upload your book, begin reading, tap words to see meanings, and try the reading-based learning flow right away.
What happens if I reach my word query limit?
When your monthly word query limit is reached, new AI word lookups may be restricted until the limit resets or your plan changes. Previously saved words and flashcards can still be reviewed from your account.
Billing and access
Plans, cancellation, mobile, and offline use
Okuzeka can be used for free, with paid plans available for higher reading volume. Billing and app availability are kept separate from your reading content.
How do I cancel my subscription?
You can manage or cancel an active subscription from the account and billing area when billing is available for your account. If your purchase is handled through Paddle, the billing portal or buyer support links from your purchase confirmation can also be used.
Is the mobile app really available?
The web app is available now. The App Store and Google Play releases are being prepared, so the public store buttons may show a coming-soon message until the apps are fully released. Test builds or limited access may exist before full store availability.
Can I read offline?
The main web experience currently expects an internet connection for account sync, AI lookup, library access, and reading state. Offline reading is not the primary supported flow right now.
What is the difference between web and mobile?
The web app is the easiest way to start immediately from a browser. The mobile app is designed for a more app-like reading flow, continuing from where you left off, and using the same library, account, and word-learning system when available.