Comparison

A FB2 Reader vs KyBook 2 Ebook Reader

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

A FB2 Reader

This free application allows you to read your favorite FB2 format ebooks on your iPad and iPhone. Easily import books from various sources, customize your reading experience with adjustable fonts and color schemes, and navigate your library with ease.

Highlights
  • Read FB2 ebooks
  • Import from web, iTunes, and cloud drives
  • Adjustable fonts, spacing, and width
  • Three color schemes
  • Easy navigation and page turning
  • Sort books by various criteria
  • Book image gallery
Features
Read full description

A FB2 Reader lets you read your favorite books on iPad without any restrictions and hidden fees. A FB2 Reader completely free ebook reading application, you can collect unlimited number of titles in your Library and read them for you own pleasure. Application optimized for all iPad and iPhone models and high resolution Retina Display graphics. It is possible to load ebooks in fb2 format into application by a number of way, like: - download fb2 books using your favorite web browser application and open it with A FB2 Reader using "Open In..." iSO feature - use iTunes file sharing to copy files from you computer - import books from you preferred cloud drive - Dropbox, OneDrive and Google Drive currently supported, more options coming in next versions A FB2 Reader features: - Turn pages with a tap or swipe - Easy navigation inside the book - Open electronic books from any source - Automatically expands fb2 files from zip archive - Adjustable fonts and font sizes - Adjustable line spacing - Adjustable page width - Three color schemes - Sort books by File name, Book Title, Author or Recently opened - Book Information Page - Book Images Gallery View - all embedded images on one page - Book sharing - possible to transfer book to any destination supported by iOS or any application which can handle this file type

About

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.

Highlights
  • 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
Features
Read full description

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.

Screenshots

A FB2 Reader3 screens
KyBook 2 Ebook Reader4 screens

Verdict

The call

The clearest difference is rating: KyBook 2 Ebook Reader at 4.7 against A FB2 Reader's 3.4. KyBook 2 Ebook Reader also leads on ratings volume (2.3K vs 5). A FB2 Reader's advantage is in-app purchases (none vs 2). On price, review sentiment, update cadence and ads 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. KyBook 2 Ebook Reader sells 2 one-off in-app purchases. A FB2 Reader asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

KyBook 2 Ebook Reader holds the better App Store score, 4.7 against 3.4. That said, the two scores are not equally well evidenced: KyBook 2 Ebook Reader has 2.3K ratings behind it against 5, so its average is the more settled of the two. Written reviews split almost evenly too, at 67% and 68% positive.

UpkeepUpdate frequency

A FB2 Reader ships an update every 2 weeks, KyBook 2 Ebook Reader fortnightly. Both last shipped on October 17, 2026.

Scorecard4 real differences · 6 level
A FB2 Reader versus KyBook 2 Ebook Reader: the parameters behind the verdict, then further details
ParameterA FB2 ReaderKyBook 2 Ebook Reader
PriceFreeFree
Rating3.4 (5 ratings)4.7 (2.3K ratings) — better
Positive reviews67.1% of reviews67.7% of reviews — better
Number of ratings52.3K — better
Update frequencyEvery 2 weeksFortnightly — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS9.08.1 — better
Further details — not scored
Size18 MB51 MB
Age rating4+17+
DeveloperYuri StaloverovKonstantin Bukreev

Customer experience

A FB2 Reader

All ratings5 ratings
Positive60.0%
Neutral0.0%
Negative40.0%
Written reviews70 reviews
Positive67.1%
Neutral5.7%
Negative27.1%

KyBook 2 Ebook Reader

All ratings2,337 ratings
Positive93.7%
Neutral2.5%
Negative3.8%
Written reviews251 reviews
Positive67.7%
Neutral6.0%
Negative26.3%

Bugs and requests

A FB2 Reader

Not enough reviews yet to summarise bugs or 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
Show 1 more
  • Adjustable font size and brightness

In-app purchases

None

A FB2 Reader

No in-app purchases

2 purchases

KyBook 2 Ebook Reader

One-time2
  • Upgrade to Pro Version$1.99
  • Upgrade to Pro Version$2.99

Questions

Is A FB2 Reader free?
A FB2 Reader is free to download, with no in-app purchases.
Is KyBook 2 Ebook Reader free?
KyBook 2 Ebook Reader is free to download, with in-app purchases available.
Which has better reviews, A FB2 Reader or KyBook 2 Ebook Reader?
KyBook 2 Ebook Reader is rated higher. A FB2 Reader averages 3.4 out of 5 from 5 ratings, while KyBook 2 Ebook Reader averages 4.7 from 2.3K ratings.
Do A FB2 Reader or KyBook 2 Ebook Reader have ads?
Neither A FB2 Reader nor KyBook 2 Ebook Reader shows ads.
Which is updated more often, A FB2 Reader or KyBook 2 Ebook Reader?
A FB2 Reader ships an update every 2 weeks, and KyBook 2 Ebook Reader fortnightly. Most recently, A FB2 Reader was updated on October 17, 2026 and KyBook 2 Ebook Reader on October 17, 2026.

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