Comparison

KyBook 2 Ebook Reader vs PureLibro

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

Head to head
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.

About

PureLibro

This app offers a comprehensive reading experience for various digital book and comic formats. It features AI-powered image enhancement, cloud synchronization, extensive customization options, and robust privacy controls. Enjoy hands-free reading and track your progress with detailed statistics.

Highlights
  • Supports TXT, EPUB, MOBI, PDF, CBZ, CBR and more
  • AI-powered image enhancement for comics
  • iCloud sync across devices
  • Hands-free auto reading mode
  • Extensive customization of fonts, layout, and appearance
  • Advanced privacy features with password and Face ID
  • Detailed reading statistics and library management
Features
Read full description

PureLibro is a multi-format reader for novels, comics, PDFs, local files, and remote libraries. Feature Highlights. Everything is designed for better reading. 1. Rich format support: supports popular formats including TXT, EPUB, MOBI, AZW3, AZW, CBZ, CBR, PDF, ZIP, and RAR (DRM-free files only). 2. Comic reader: supports ZIP, RAR, CBZ, and CBR comic archives. PDF, EPUB, and MOBI files can also be switched to comic mode with one tap, making it ideal for comics, art books, and image-rich content. 3. Remote library streaming reading (comic mode): supports remote libraries such as SMB, OPDS and WebDAV. On servers that support streaming access, ZIP, RAR, CBZ, CBR, and PDF files can be opened without fully downloading them first, saving local storage space. 4. AI-based image enhancement: supports Waifu2x / Anime4K to improve comic image quality (comic mode only). 5. iCloud sync: keeps reading progress and book data consistent across your devices. 6. Data backup: package your reading data with one tap and save it to cloud drives or other storage locations for extra peace of mind. 7. TXT file editing: edit TXT content directly for easier reading and organization. 8. Multiple import methods: import books via WebDAV, cloud drives, Wi-Fi transfer, iCloud, and more. 9. Auto reading: free your hands and make long reading sessions more comfortable. 10. Personalized layout: customize character spacing, paragraph layout, background images, and text colors to create your own reading style. 11. Eye-friendly reading: supports dark mode, page curl, slide, scrolling, and other reading modes, with Simplified/Traditional Chinese conversion. 12. Privacy protection: supports password, gesture, and Face ID unlock, and allows you to encrypt or hide books to protect your personal reading space. 13. Reading statistics: records reading duration, frequency, progress, and more to help you understand your reading habits. 14. Flexible book management: supports custom groups, title editing, and sorting for a clearer library. 15. Custom covers: customize covers for TXT and other books to make your bookshelf look better. 16. Automatic chapter detection: TXT novels can also be divided into chapters with one tap, improving the long-form reading experience. 17. Multiple font options: use system fonts or import custom fonts. 18. Multiple listening voices: supports system text-to-speech and Alibaba Cloud speech synthesis, with multiple voices to choose from. -- Pro benefits: After subscribing to Pro, you can use all Pro advanced features during the service period and remove all ads. -- Monthly subscription (1 month), quarterly subscription (3 months), and yearly subscription (1 year) are auto-renewable subscriptions. -- The actual product price applies. The purchase price will be charged in your local currency according to the current exchange rate defined by iTunes. Payment will be charged to your iTunes account upon confirmation of purchase. 【Monthly, Quarterly, and Yearly Auto-Renewable Subscription Services】 -- If you subscribe to the monthly, quarterly, or yearly auto-renewable service, you authorize Window Reading to charge your iTunes account (the “Account”) for the next billing cycle of the Pro service within 24 hours before the current subscription period expires. If the charge fails due to insufficient account balance, Window Reading reserves the right to suspend or terminate your Pro service without further notice. -- To cancel an active auto-renewable subscription, go to “Settings” on your iOS device → “iTunes Store & App Store” → select “Apple ID” → tap “View Apple ID” → tap “Subscriptions” on the account settings page → cancel the subscription. -- Privacy Policy: https://gitee.com/coder_to/luck/blob/master/App/Privacy.md -- Terms of Service and Auto-Renewal Terms: https://gitee.com/coder_to/luck/blob/master/App/serviceForMembers.md Icon Design Studying icons created by Freepik - Flaticon

Screenshots

KyBook 2 Ebook Reader4 screens
PureLibro4 screens

Verdict

The call

The clearest difference is ratings volume: KyBook 2 Ebook Reader at 2.3K against PureLibro's 362. KyBook 2 Ebook Reader also leads on iOS requirement (8.1 vs 15.4). PureLibro's advantage is review sentiment (77% vs 68%). On price, rating, 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 and PureLibro sells 6 in-app purchases, starting at $0.99 per month. 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 — 4.7 for KyBook 2 Ebook Reader against 4.6 for PureLibro. That said, the two scores are not equally well evidenced: KyBook 2 Ebook Reader has 2.3K ratings behind it against 362, so its average is the more settled of the two. Written reviews are what separate them: 68% of KyBook 2 Ebook Reader's written reviews are positive against 77% of PureLibro's.

UpkeepUpdate frequency

KyBook 2 Ebook Reader ships an update fortnightly, PureLibro every 10 days. Both last shipped on September 26, 2026.

Scorecard3 real differences · 7 level
KyBook 2 Ebook Reader versus PureLibro: the parameters behind the verdict, then further details
ParameterKyBook 2 Ebook ReaderPureLibro
PriceFreeFree
Rating4.7 (2.3K ratings) — better4.6 (362 ratings)
Positive reviews67.6% of reviews76.9% of reviews — better
Number of ratings2.3K — better362
Update frequencyFortnightlyEvery 10 days — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS8.1 — better15.4
Further details — not scored
Size51 MB42 MB
Age rating17+17+
DeveloperKonstantin Bukreev添欢 谢

Customer experience

KyBook 2 Ebook Reader

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

PureLibro

All ratings362 ratings
Positive90.6%
Neutral3.6%
Negative5.8%
Written reviews169 reviews
Positive76.9%
Neutral11.2%
Negative11.8%

User reviews

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

PureLibro

From 362 App Store ratings

What we love

  • 🚀 Excellent rendering and image quality
  • 👍 Clean and intuitive user interface
  • 🔒 Supports a variety of file formats
  • 💡 Customizable reading experience
  • 🚀 Fast and responsive app

Room to improve

  • 🐛 Some issues with text formatting and italics
  • 💡 Lack of multi-device sync and progress tracking
  • 🐛 Occasional crashes or performance issues
  • 💡 Limited font and theme customization options
  • 🐛 Localization problems with menus and settings

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
Show 1 more
  • Adjustable font size and brightness

PureLibro

Reported bugs

4 issues
  • Inconsistent behavior when switching between reading modes
  • Issues with loading and rendering large books or comics
  • Problems with the reliability of the built-in web browser
  • Bugs related to the iCloud sync and backup functionality

Requested features

7 requests
  • Add support for more text-to-speech options
  • Implement bulk import and management of books
  • Introduce multi-device sync and reading progress tracking
  • Expand font and theme customization capabilities
  • Improve localization and translation of the app
Show 2 more
  • Add support for OPDS and other external library sources
  • Implement a more robust and user-friendly TXT file handling

In-app purchases

2 purchases

KyBook 2 Ebook Reader

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

PureLibro

Subscriptions3
  • 1 monthly subscription$0.991 Month
  • 3 monthly subscription$1.993 Months
  • yearly subscription$5.991 Year
One-time3
  • Pro Special Offer$12.99
  • Unlock Pro Version$12.99
  • Unlock Pro Version$19.99

Questions

Is KyBook 2 Ebook Reader free?
KyBook 2 Ebook Reader is free to download, with in-app purchases available.
Is PureLibro free?
PureLibro is free to download, with in-app purchases available.
Which has better reviews, KyBook 2 Ebook Reader or PureLibro?
KyBook 2 Ebook Reader is rated higher. KyBook 2 Ebook Reader averages 4.7 out of 5 from 2.3K ratings, while PureLibro averages 4.6 from 362 ratings.
Do KyBook 2 Ebook Reader or PureLibro have ads?
Neither KyBook 2 Ebook Reader nor PureLibro shows ads.
Which is updated more often, KyBook 2 Ebook Reader or PureLibro?
KyBook 2 Ebook Reader ships an update fortnightly, and PureLibro every 10 days. Most recently, KyBook 2 Ebook Reader was updated on September 26, 2026 and PureLibro on September 26, 2026.

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