KyBook 2 Ebook Reader vs DjVu Reader & Viewer
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
KyBook 2 Ebook Reader
This app is a versatile e-book reader that supports a wide range of formats including EPUB, MOBI, and PDF. It offers extensive customization for reading modes, cloud storage integration, and text-to-speech capabilities for audiobooks.
- Supports EPUB, MOBI, PDF, DJVU, and more
- OPDS catalog and cloud storage integration
- Customizable reading modes (font, theme, size)
- Text-to-speech for e-books and audiobooks
- Book cataloging and organization
- Speed reading and text summarization
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Attention, since October 1, 2019, the third edition of the application is available on the App Store - KyBook 3 Reader. The best way to read your books ever! KyBook supports all the major e-book formats, OPDS catalogs and Cloud Storage. Continuously developing and improving in close contact with thousands of KyBook users. Key features: - EPUB, FB2, RTF, PDF, DJVU, MOBI, AZW3, CBR, CBZ, CBT, MP3, M4A, M4B formats - OPDS catalogs - Cloud Storage - Flexible reading mode settings - Handy cataloguer - Text-to-speech technology More: - Supports e-books in EPUB (DRM-free), FictionBook (fb2, fbz, fb2.zip), TXT, RTF, PDF, DJVU, Comic Book (cbr, cbz, cbt), MobiPocket (mobi), Kindle (azw3), and Audio Book (mp3, m4a, m4b) formats. - Provides access to enormous collection of free electronic books through OPDS-catalogs support. - Finds books in your Cloud Storage or anywhere in Internet. - Saves your books into iCloud, Dropbox, Yandex Disk, Google Drive, OneDrive, Cloud Mail.ru, ownCloud (WebDAV) and Shared folders (SMB/CIFS). - Allows customize: font, colour theme, text size, text alignment mode, margins, paragraph indention, hyphenations and more. - Provides easy navigation inside the book using table of content, bookmarks or notes. - Helps organizing your books, cataloging them, grouping and sorting in different modes. - Provides detailed information about each of your book. - Allows choosing book covers from different sources, changing titles and subjects and even more. - Uses text-to-speech technology to voice any e-book. - Supports translation of text and the vocabularies in StarDict and Lingvo DSL format. - Integrates with social networking services. - Supports of archives in ZIP, RAR and TAR format. - Provides Speed Reading. - Allows to stream audio for audio books in Cloud Storage. - Supports fuzzy search and search using regular expressions in a text book. - Supports automatic text summarization and precis-writing. - Supports preview of iWork, Microsoft Office, CSV, HTML files.
DjVu Reader & Viewer
This app offers a modern and elegant way to read DjVu documents on iOS devices. It features high-quality rendering, a smart document tracking system, and a clean interface optimized for technical and academic material.
- High-quality DjVu rendering
- Smart document tracking
- Clean, intuitive interface
- Dark/White mode options
- Powerful search capabilities
- Optimized performance for large documents
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DjVu Reader is the modern, elegant solution for reading technical and academic DjVu documents on your iOS device. Experience crystal-clear rendering of complex documents with a clean, distraction-free interface designed for professional use. — KEY FEATURES — • High-quality rendering of DjVu documents with precise text and image display • Smart document tracking system to organize your reading (to-read, in-progress, completed) • Clean, intuitive interface optimized for academic and technical material • Dark/White modes options for comfortable reading in any environment • Powerful search capabilities to quickly find content within documents • Optimized performance for large technical documents and academic papers • Seamless document organization with smart folders and favorites (Coming Soon…) Whether you're a researcher, academic, student, or professional, DjVu Reader provides the perfect experience for your technical documents. — SUPPORT & LINKS — - Contact Us: support@djvu.app - Privacy Policy: https://djvu.app/privacy - Terms of Use: https://djvu.app/terms
Screenshots
Verdict
The clearest difference is review sentiment: KyBook 2 Ebook Reader at 68% against DjVu Reader & Viewer's 25%. KyBook 2 Ebook Reader also leads on rating (4.7 vs 4.2) and update cadence (fortnightly vs every 4 months). On price, ads, in-app purchases and monetization model 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. KyBook 2 Ebook Reader sells 2 one-off in-app purchases and DjVu Reader & Viewer sells 2 in-app purchases, starting at $2.99 per 7 days. Whichever you choose, the download price is not the number that matters.
KyBook 2 Ebook Reader holds the better App Store score, 4.7 against 4.2. That said, the two scores are not equally well evidenced: KyBook 2 Ebook Reader has 2.4K ratings behind it against 78, so its average is the more settled of the two. Written reviews point the same way: 68% of KyBook 2 Ebook Reader's written reviews are positive against 25% of DjVu Reader & Viewer's.
KyBook 2 Ebook Reader ships an update fortnightly, DjVu Reader & Viewer every 4 months. The most recent releases landed on November 13, 2026 and November 14, 2026 respectively.
| Parameter | KyBook 2 Ebook Reader | DjVu Reader & Viewer |
|---|---|---|
| Price | Free | Free |
| Rating | 4.7 (2.4K ratings) — better | 4.2 (78 ratings) |
| Positive reviews | 67.7% of reviews — better | 25.0% of reviews |
| Number of ratings | 2.4K — better | 78 |
| Update frequency | Fortnightly — better | Every 4 months |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 8.1 — better | 16.2 |
| Further details — not scored | ||
| Size | 51 MB | 35 MB |
| Age rating | 17+ | 4+ |
| Developer | Konstantin Bukreev | Yassir Hrout |
Customer experience
KyBook 2 Ebook Reader
DjVu Reader & Viewer
Bugs and requests
KyBook 2 Ebook Reader
Reported bugs
4 issues- Books not loading properly
- Restore purchases not working
- Sync issues with cloud services
- Unexpected behavior after updates
Requested features
6 requests- Ability to edit color themes
- Organize books into folders
- Annotation and note-taking features
- Resume reading from last page
- Goodreads integration
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- Adjustable font size and brightness
DjVu Reader & Viewer
Not enough reviews yet to summarise bugs or requests.
In-app purchases
KyBook 2 Ebook Reader
- Upgrade to Pro Version$1.99
- Upgrade to Pro Version$2.99
DjVu Reader & Viewer
- Weekly Plan$2.997 Days
- Lifetime Plan$5.99
Questions
Is KyBook 2 Ebook Reader free?
Is DjVu Reader & Viewer free?
Which has better reviews, KyBook 2 Ebook Reader or DjVu Reader & Viewer?
Do KyBook 2 Ebook Reader or DjVu Reader & Viewer have ads?
Which is updated more often, KyBook 2 Ebook Reader or DjVu Reader & Viewer?
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