# KyBook vs PureLibro

The clearest difference is update cadence: PureLibro at every 10 days against KyBook's every 3 weeks. KyBook's advantage is iOS requirement (8.0 vs 15.4). On price, rating, review sentiment and ratings volume there is nothing between them.

Both are free to download. KyBook 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.

PureLibro holds the better App Store score, 4.6 against 4.4. Both are backed by a comparable volume of ratings — 464 and 362 respectively. Written reviews point the same way: 71% of KyBook's written reviews are positive against 77% of PureLibro's.

KyBook ships an update every 3 weeks, PureLibro every 10 days. The most recent releases landed on October 16, 2026 and October 17, 2026 respectively.

## The numbers

| Metric | KyBook | PureLibro |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.4 (464 ratings)](https://appshunter.io/ios/app/kybook-epubfb2pdfdjvu-reader/id673027171/reviews) | **[4.6 (362 ratings)](https://appshunter.io/ios/app/purelibro-ebook-reader/id1546612448/reviews)** |
| Number of ratings | **464** | 362 |
| Positive reviews | 71.2% of reviews | **76.6% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 10 days** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 50 MB | 42 MB |
| Requires iOS | **8.0** | 15.4 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 17+ |
| Developer | [Konstantin Bukreev](https://appshunter.io/developer/547576207) | [添欢 谢](https://appshunter.io/developer/1497426499) |

## What reviewers say

### KyBook

[App page](https://appshunter.io/ios/app/kybook-epubfb2pdfdjvu-reader/id673027171)

This app is a versatile e-book reader supporting a wide range of formats including EPUB, PDF, and audiobooks. It offers extensive customization for reading modes, cloud storage integration, and easy book organization. Advanced features like DJVU support and speed reading are available via in-app purchase.

**Highlights:** Supports EPUB, FB2, PDF, DJVU, CBR, CBZ, MP3, M4A, M4B formats, OPDS catalogs and cloud storage integration, Customizable reading mode settings, Book organization and cataloging, Text-to-speech and dictionary support, Speed Reading (RSVP)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Upgrade to Pro Version | $0.99 | one-time |
| Upgrade to Pro Version | $1.99 | one-time |

**What reviewers like**

- 👍 Easy to use
- 🚀 Fast and smooth performance
- 📚 Supports wide range of file formats
- 🔖 Good organization and categorization features
- 🔊 Excellent text-to-speech functionality

**What reviewers complain about**

- 🐛 Syncing issues, especially with Dropbox and Google Drive
- 🔍 Navigation and file management could be improved
- 💰 Paid version required for some key features
- 📢 Intrusive ads in free version
- 🔧 Lack of updates and support from developers

**Reported bugs**

- Crashes after recent iOS updates
- Text-to-speech function not working properly on newer devices
- Inability to delete books from the app
- Inconsistent theme and color customization behavior

**Requested features**

- Add support for more languages
- Improve image handling and layout
- Implement better annotation and highlighting tools
- Provide easier access to main library from subfolders
- Add ability to password protect individual books or folders


### PureLibro

[App page](https://appshunter.io/ios/app/purelibro-ebook-reader/id1546612448)

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:** macOS Compatibility, Family Sharing, Vision Pro support

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1 monthly subscription | $0.99 | per month |
| 3 monthly subscription | $1.99 | per 3 months |
| yearly subscription | $5.99 | per year |
| Pro Special Offer | $12.99 | one-time |
| Unlock Pro Version | $12.99 | one-time |
| Unlock Pro Version | $19.99 | one-time |

**What reviewers like**

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

**What reviewers complain about**

- 🐛 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

**Reported bugs**

- 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**

- 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


## Frequently asked questions

### Is KyBook free?

KyBook 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 or PureLibro?

PureLibro is rated higher. KyBook averages 4.4 out of 5 from 464 ratings, while PureLibro averages 4.6 from 362 ratings.

### Do KyBook or PureLibro have ads?

Neither KyBook nor PureLibro shows ads.

### Which is updated more often, KyBook or PureLibro?

KyBook ships an update every 3 weeks, and PureLibro every 10 days. Most recently, KyBook was updated on October 16, 2026 and PureLibro on October 17, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*