Comparison

Yomu EBook 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

Yomu EBook Reader

An independent ebook reader designed for distraction-free reading with customizable styles and layouts. Supports a wide range of formats and offers robust library management features. Cloud synchronization is available for pro users.

Highlights
  • Customizable reading styles and themes
  • Supports EPUB, MOBI, Kindle, CBZ, CBR, PDF
  • Dynamic text and margin adjustment
  • Library organization with folders and tags
  • Cloud synchronization for books and annotations (Pro)
  • Text highlighting and note-taking
  • Widgets for quick access to books and quotes
Features
Read full description

Yomu is an independent reader for book lovers. Yomu’s design is carefully crafted for ebooks and offers custom styles for better readability and distraction-free reading. Designed to let you focus on reading, Yomu has no unnecessary preferences. Just open a book and start reading. Yomu’s fluid layout dynamically adjusts all text properties and margins depending on your preferred styles and device, giving you an optimal reading experience. FORMATS Yomu supports standard ebooks without digital rights management. Supported formats: - EPub (.epub) - Mobi (.mobi, .prc) - Kindle (.azw, .azw3, .kf8) - Comics (.cbz, .cbr) - PDF (.pdf) Choose free books from publishers such as Standard Ebooks or Project Gutenberg. Download ebooks directly from your browser or copy files from other apps. Import files with iCloud Drive, iTunes File Sharing, or from Dropbox, Google Drive, OneDrive, OPDS and Calibre. READER The reader's design is carefully crafted for ebooks and offers custom styles for better readability. Choose your favorite theme font (Lato, Georgia, Lexend, OpenDyslexic, ...), reader mode (day, sepia, grey, black, ...), select a preset or custom font size, content layout (page, scroll) and many more options. All settings can be saved as your personal default for each book. Swipe or tap to go to the next page. You can also use the book's content outline or table of contents to navigate to another chapter. While reading EPub, Mobi and Kindle books, select text to take notes or highlight favorite sections. Create bookmarks or search inside ebooks to quickly find anything you are looking for. LIBRARY Organise your books in an easy to use library. Manage your library by creating folders or tags to organize your books. Sort your collection either by title, author, series, recently read or drag and drop for a custom order. You can edit a document's title, author, summary, cover or any other meta data. Save or export your books with all information and annotations in text, markdown or json format. CLOUD Yomu's Cloud Library (pro only) stores your books and annotations securely in Apple's iCloud. Keep all your ebooks safe and at hand on whatever device. Every time you change something on one device, it's synced to all your other devices. Always have the latest version, when you start reading on your iPad and continue on your iPhone on the go. Please note that you need to be signed in on your device with the same Apple ID on all platforms. WIDGETS See your recently read books or highlighted quotes. Yomu includes widgets to quickly view and open your books and quotes. Add a widget from the gallery and choose a list from the options. Tap on an entry to continue reading where you left off. YOMU PRO Yomu is free to use and includes all basic features. Every ebook format, theme or setting is available and lets you try out the unrestricted reader. However, the free version has some limitations and does not include certain features. Upgrade to Yomu Pro to get: - Cloud Library: Store and sync your library with Apple’s iCloud. - Unlimited Documents: No limit on the number of documents. - No Advertisement: Free version can display ads. Yomu is an independent app, your purchase supports the further development. When you buy an in-app purchase, you are doing so through Apple’s App Store and agree to their terms and conditions. Payments will be charged to the credit card of your Apple account. SERVICE Yomu is available for iPhone, iPad and Mac. In contrast to other apps, Yomu does not collect or sell any personal information. And it keeps your data private. Terms of Service: https://www.yomu-reader.com/terms/ Privacy Policy: https://www.yomu-reader.com/privacy/ Support: https://www.yomu-reader.com/support/

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

Yomu EBook Reader4 screens
KyBook 2 Ebook Reader4 screens

Verdict

The call

The clearest difference is update cadence: KyBook 2 Ebook Reader at fortnightly against Yomu EBook Reader's monthly. KyBook 2 Ebook Reader also leads on iOS requirement (8.1 vs 17.0). Yomu EBook Reader's advantage is review sentiment (80% vs 68%). On price, rating, ratings volume 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. Yomu EBook Reader sells 2 one-off in-app purchases and KyBook 2 Ebook Reader sells 2 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.8 for Yomu EBook Reader against 4.7 for KyBook 2 Ebook Reader. Both are backed by a comparable volume of ratings — 1.6K and 2.3K respectively. Written reviews are what separate them: 80% of Yomu EBook Reader's written reviews are positive against 68% of KyBook 2 Ebook Reader's.

UpkeepUpdate frequency

Yomu EBook Reader ships an update monthly, KyBook 2 Ebook Reader fortnightly. The most recent releases landed on September 28, 2026 and September 26, 2026 respectively.

Scorecard3 real differences · 7 level
Yomu EBook Reader versus KyBook 2 Ebook Reader: the parameters behind the verdict, then further details
ParameterYomu EBook ReaderKyBook 2 Ebook Reader
PriceFreeFree
Rating4.8 (1.6K ratings) — better4.7 (2.3K ratings)
Positive reviews79.9% of reviews — better67.6% of reviews
Number of ratings1.6K2.3K — better
Update frequencyMonthlyFortnightly — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad, MaciPhone, iPad, iPod
Requires iOS17.08.1 — better
Further details — not scored
Size60 MB51 MB
Age rating4+17+
DeveloperBeat RaessKonstantin Bukreev

Customer experience

Yomu EBook Reader

All ratings1,609 ratings
Positive95.4%
Neutral1.9%
Negative2.7%
Written reviews741 reviews
Positive79.9%
Neutral6.9%
Negative13.2%

KyBook 2 Ebook Reader

All ratings2,337 ratings
Positive93.7%
Neutral2.5%
Negative3.8%
Written reviews250 reviews
Positive67.6%
Neutral6.0%
Negative26.4%

User reviews

Yomu EBook Reader

From 1.6K App Store ratings

What we love

  • 🚀 Customizable reading experience
  • 📚 Supports wide range of file formats
  • 💻 Seamless sync across devices
  • 🔒 No DRM or subscription issues
  • 🗂️ Effective organization with folders and tags

Room to improve

  • 🐛 Occasional bugs with highlighting and page turning
  • 🔍 Limited search functionality
  • 📚 Lack of nested folders for better organization
  • 🔧 Some customization options could be improved
  • 🖼️ Thumbnails/cover art could be larger

KyBook 2 Ebook Reader

From 2.3K App Store ratings

What 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

Bugs and requests

Yomu EBook Reader

Reported bugs

4 issues
  • Occasional crashes or freezes
  • Inconsistent behavior when swiping to turn pages
  • Syncing issues between devices
  • Formatting problems with certain ebook files

Requested features

6 requests
  • Add support for text-to-speech
  • Improve PDF handling with annotation and text selection
  • Implement nested folder structure for better organization
  • Expand font and theme customization options
  • Introduce a continuous scrolling mode
Show 1 more
  • Add a more prominent 'return to last read position' feature

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

2 purchases

Yomu EBook Reader

One-time2
  • Yomu Pro$7.99
  • Yomu Pro (Karma)$12.99
2 purchases

KyBook 2 Ebook Reader

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

Questions

Is Yomu EBook Reader free?
Yomu EBook Reader is free to download, with in-app purchases available.
Is KyBook 2 Ebook Reader free?
KyBook 2 Ebook Reader is free to download, with in-app purchases available.
Which has better reviews, Yomu EBook Reader or KyBook 2 Ebook Reader?
Yomu EBook Reader is rated higher. Yomu EBook Reader averages 4.8 out of 5 from 1.6K ratings, while KyBook 2 Ebook Reader averages 4.7 from 2.3K ratings.
Do Yomu EBook Reader or KyBook 2 Ebook Reader have ads?
Neither Yomu EBook Reader nor KyBook 2 Ebook Reader shows ads.
Which is updated more often, Yomu EBook Reader or KyBook 2 Ebook Reader?
Yomu EBook Reader ships an update monthly, and KyBook 2 Ebook Reader fortnightly. Most recently, Yomu EBook Reader was updated on September 28, 2026 and KyBook 2 Ebook Reader on September 26, 2026.

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