# KyBook 3 Ebook Reader vs PureLibro

KyBook 3 Ebook Reader and PureLibro both sit at 4.7 stars, but that hides the real split: 77% of PureLibro's written reviews are positive against 61% of KyBook 3 Ebook Reader's. KyBook 3 Ebook Reader's advantage is ratings volume (4.6K vs 362) and update cadence (every 5 days vs every 10 days). On price, rating, ads and in-app purchases there is nothing between them.

Both are free to download. KyBook 3 Ebook Reader sells 4 in-app purchases, starting at $4.49 per 3 months 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.

On the App Store both sit at effectively the same score — 4.7 for KyBook 3 Ebook Reader against 4.6 for PureLibro. That said, the two scores are not equally well evidenced: KyBook 3 Ebook Reader has 4.6K ratings behind it against 362, so its average is the more settled of the two. Written reviews are what separate them: 61% of KyBook 3 Ebook Reader's written reviews are positive against 77% of PureLibro's.

KyBook 3 Ebook Reader ships an update every 5 days, PureLibro every 10 days. The most recent releases landed on October 20, 2026 and October 17, 2026 respectively.

## The numbers

| Metric | KyBook 3 Ebook Reader | PureLibro |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (4.6K ratings)](https://appshunter.io/ios/app/kybook-3-ebook-reader/id1348198785/reviews)** | [4.6 (362 ratings)](https://appshunter.io/ios/app/purelibro-ebook-reader/id1546612448/reviews) |
| Number of ratings | **4.6K** | 362 |
| Positive reviews | 60.9% of reviews | **76.6% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 5 days** | Every 10 days |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 53 MB | 42 MB |
| Requires iOS | **11.0** | 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 3 Ebook Reader

[App page](https://appshunter.io/ios/app/kybook-3-ebook-reader/id1348198785)

This app is a versatile e-book reader and cataloger supporting numerous formats like EPUB, MOBI, and PDF. It offers a comfortable reading experience with customizable options, powerful annotation tools, and seamless cloud storage integration. Organize your library with tags, collections, and a handy cataloguer.

**Highlights:** Supports all major e-book formats, OPDS catalog access, Comfortable reading mode with themes, Powerful annotations and summary editor, Handy cataloguer with tagging, Cloud storage integration

**Features:** macOS Compatibility

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 3 months subscription | $4.49 | per 3 months |
| Yearly subscription | $14.99 | per year |
| Upgrade to Pro (Discount) | $2.99 | one-time |
| Upgrade to Pro | $4.99 | one-time |

**What reviewers like**

- 🚀 Excellent design, close to no ads
- 🚀 Handles various file formats well
- 👍 Customizable, lots of features
- 👍 Stable and fast
- 👍 Good for reading comics/manga

**What reviewers complain about**

- 🐛 Sync and account issues
- 🐛 Crashes, bugs, and compatibility problems
- 🔍 Confusing interface, hard to use
- 💰 Paid features and subscription model
- 🔍 Missing key features like page turn animation

**Reported bugs**

- Inability to open/read certain file formats
- Sync and account creation issues
- Problems with PDF and image display
- Crashes and compatibility problems
- Duplication of books in library

**Requested features**

- Left alignment option
- Dark mode/OLED black theme
- Improved image handling
- Better support for Chinese language
- Vertical page flip


### 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 3 Ebook Reader free?

KyBook 3 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 3 Ebook Reader or PureLibro?

KyBook 3 Ebook Reader is rated higher. KyBook 3 Ebook Reader averages 4.7 out of 5 from 4.6K ratings, while PureLibro averages 4.6 from 362 ratings.

### Do KyBook 3 Ebook Reader or PureLibro have ads?

Neither KyBook 3 Ebook Reader nor PureLibro shows ads.

### Which is updated more often, KyBook 3 Ebook Reader or PureLibro?

KyBook 3 Ebook Reader ships an update every 5 days, and PureLibro every 10 days. Most recently, KyBook 3 Ebook Reader was updated on October 20, 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.*