KyBook 2 Ebook Reader vs FBReader
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.
FBReader
A fast and versatile e-book reader supporting multiple formats like ePub, Kindle, and fb2. It offers cloud syncing for reading progress and a customizable interface. Upgrade to unlock unlimited library access and advanced features.
- Supports ePub, Kindle azw3, fb2, RTF, Word, HTML, and text
- ePub3 and Readium LCP DRM support
- Cloud syncing of library and reading positions
- Customizable appearance and behavior options
- Direct opening of downloaded files
- Free version with library limits
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FBReader is a fast and easy-to-use e-book reader for iPhone and iPad. It supports all major e-book formats, including ePub (with key ePub3 features), Kindle azw3, and fb2 (.zip). You can open both unprotected books and ePub files protected with Readium LCP DRM. FBReader also reads RTF, Word (.doc), HTML, and plain text, so you can keep all your books and documents in one place. Read anywhere and pick up right where you left off. FBReader can sync your library, reading positions, bookmarks, and more across devices using the FBReader Book Network, a cloud service powered by Google Drive. If you prefer managing files yourself, you can download books in your browser and open them directly with FBReader. A wide range of appearance and behavior options lets you customize the reading experience to match your preferences. Free version and upgrade options: • The free version allows up to 10 books in your library. • The built-in translation feature is disabled. Upgrade to the full version to remove these limits and enjoy the complete FBReader experience.
Screenshots
Verdict
The clearest difference is rating: KyBook 2 Ebook Reader at 4.7 against FBReader's 3.7. KyBook 2 Ebook Reader also leads on ratings volume (2.3K vs 128) and review sentiment (68% vs 52%). 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 FBReader sells 1 one-off in-app purchase. 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 3.7. That said, the two scores are not equally well evidenced: KyBook 2 Ebook Reader has 2.3K ratings behind it against 128, 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 52% of FBReader's.
KyBook 2 Ebook Reader ships an update fortnightly, FBReader monthly. The most recent releases landed on September 26, 2026 and September 25, 2026 respectively.
| Parameter | KyBook 2 Ebook Reader | FBReader |
|---|---|---|
| Price | Free | Free |
| Rating | 4.7 (2.3K ratings) — better | 3.7 (128 ratings) |
| Positive reviews | 67.6% of reviews — better | 52.5% of reviews |
| Number of ratings | 2.3K — better | 128 |
| Update frequency | Fortnightly — better | Monthly |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod, Mac — better |
| Requires iOS | 8.1 — better | 13.0 |
| Further details — not scored | ||
| Size | 51 MB | 22 MB |
| Age rating | 17+ | 17+ |
| Developer | Konstantin Bukreev | FBReader.ORG Limited |
Customer experience
KyBook 2 Ebook Reader
FBReader
User reviews
KyBook 2 Ebook Reader
From 2.3K App Store ratingsWhat we love
- 👍 Stable and solid
- 👍 Customizable reading experience
- 👍 Excellent reading app
- 👍 Great for reading PDFs and ebooks
- 👍 Syncs across devices
Room to improve
- 🐛 Bugs and crashes
- 💰 Aggressive push for paid upgrades
- 🔍 Confusing navigation and UI
- 📢 Intrusive ads
- 🔒 Clipboard access concerns
FBReader
From 128 App Store ratingsWhat we love
- 🚀 Fast and smooth reading experience
- 👍 Simple and intuitive interface
- 💡 Customizable font, margin, and layout options
- 🔒 Secure syncing across devices
- 🎨 Retro background textures
Room to improve
- 🐛 Occasional crashes and freezes
- 🔧 Lack of advanced organization features (folders, shelves)
- 🚫 No PDF support
- 🔍 Inconsistent search and book discovery
- 🔒 Privacy concerns around data collection
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
FBReader
Reported bugs
4 issues- Syncing issues with Google Drive
- Deletion of books from library
- Formatting problems with large footnotes
- Compatibility issues with newer iOS versions
Requested features
5 requests- Vertical scrolling mode
- Improved bookmark and annotation tools
- Ability to add/change book covers
- Text-to-speech functionality
- Better library management (read/unread, collections)
In-app purchases
KyBook 2 Ebook Reader
- Upgrade to Pro Version$1.99
- Upgrade to Pro Version$2.99
FBReader
- FBReader Full Edition2 variants$12.99
Questions
Is KyBook 2 Ebook Reader free?
Is FBReader free?
Which has better reviews, KyBook 2 Ebook Reader or FBReader?
Do KyBook 2 Ebook Reader or FBReader have ads?
Which is updated more often, KyBook 2 Ebook Reader or FBReader?
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