What files does LeziBook open?
EPUB, PDF with a text layer, TXT, DOCX and Markdown. The app splits chapters from the contents, the PDF bookmarks or the headings in the file, and keeps pictures, tables and footnotes. Scanned PDFs that are only images are not supported yet.
Do the voices sound natural?
There are eleven Vietnamese AI voices, men and women, close to a person reading; they need a recent phone, and the app checks yours before it offers the download. Every phone can use a light voice of about 60 MB. Each voice has a sample. With no voice downloaded, the app uses the phone's own Vietnamese voice and shows how to install one if it is missing.
What is in the Store?
Vietnamese classics out of copyright (from Wikisource), more than 900 English classics from Standard Ebooks, and stories LeziBook publishes, clearly marked when written with AI. All free; one tap puts a book in your library.
Are my books sent anywhere?
Not by default. Opening the file, normalizing the text and making the voice all happen on the phone. There are two exceptions, both your choice. One is Report a misread: when you press Send, exactly the one sentence you previewed goes to the server, kept up to 180 days to fix the reading, then deleted. The other is AI text clean-up (paid, coming, switched on per book by you): each passage is sent for processing and discarded at once; the server keeps nothing. Backup files go only where you put them. Anonymous stats never contain book content, and you can turn them off in Settings.
Do I lose my books and progress on a new phone?
No. In Settings, export one backup file with your books, covers, marks, pronunciations, progress and stats, send it to the new phone and open it with LeziBook. No account needed, and the file never passes through LeziBook's server.
Can I listen to books I bought on Kindle?
No. DRM-protected books are refused with an explanation, and LeziBook has no way to remove DRM. DRM-free books you bought, public-domain books and your own documents work.
Does it work offline?
Yes. After you download a voice over Wi-Fi everything runs offline: reading, listening, sentence highlight and stats. Only the Store needs a connection while it adds a book.
Is the app in English?
The interface is in Vietnamese and English, following the phone's language or your choice in Settings. Version 1.0 reads Vietnamese books with LeziBook's voices; English books are read with the phone's English voice. English reading rules and on-device English voices come next.
When is it on the App Store and Google Play?
Google Play first, iPhone after. LeziBook is being tested on real phones. Leave your email at the bottom of the page and we send exactly one email when the app is in the store.
