# Yomu EBook Reader vs KyBook 3 Ebook Reader

The clearest difference is update cadence: KyBook 3 Ebook Reader at every 5 days against Yomu EBook Reader's monthly. KyBook 3 Ebook Reader also leads on iOS requirement (11.0 vs 17.0). Yomu EBook Reader's advantage is review sentiment (80% vs 61%). On price, rating, ratings volume and ads there is nothing between them.

Both are free to download. Yomu EBook Reader sells 2 one-off in-app purchases and KyBook 3 Ebook Reader sells 4 in-app purchases, starting at $4.49 per 3 months. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 4.8 for Yomu EBook Reader against 4.7 for KyBook 3 Ebook Reader. Both are backed by a comparable volume of ratings — 1.6K and 4.7K respectively. Written reviews are what separate them: 80% of Yomu EBook Reader's written reviews are positive against 61% of KyBook 3 Ebook Reader's.

Yomu EBook Reader ships an update monthly, KyBook 3 Ebook Reader every 5 days. The most recent releases landed on November 1, 2026 and October 29, 2026 respectively.

## The numbers

| Metric | Yomu EBook Reader | KyBook 3 Ebook Reader |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (1.6K ratings)](https://appshunter.io/ios/app/yomu-ebook-reader/id562211012/reviews)** | [4.7 (4.7K ratings)](https://appshunter.io/ios/app/kybook-3-ebook-reader/id1348198785/reviews) |
| Number of ratings | 1.6K | **4.7K** |
| Positive reviews | **80.2% of reviews** | 61.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Monthly | **Every 5 days** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 61 MB | 53 MB |
| Requires iOS | 17.0 | **11.0** |
| Devices | iPhone, iPad, Mac | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Beat Raess](https://appshunter.io/developer/381075846) | [Konstantin Bukreev](https://appshunter.io/developer/547576207) |

## What reviewers say

### Yomu EBook Reader

[App page](https://appshunter.io/ios/app/yomu-ebook-reader/id562211012)

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:** Family Sharing, Siri integration

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Yomu Pro | $7.99 | one-time |
| Yomu Pro (Karma) | $12.99 | one-time |

**What reviewers like**

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

**What reviewers complain about**

- 🐛 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

**Reported bugs**

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

**Requested features**

- 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


### 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


## Frequently asked questions

### Is Yomu EBook Reader free?

Yomu EBook Reader is free to download, with in-app purchases available.

### Is KyBook 3 Ebook Reader free?

KyBook 3 Ebook Reader is free to download, with in-app purchases available.

### Which has better reviews, Yomu EBook Reader or KyBook 3 Ebook Reader?

Yomu EBook Reader is rated higher. Yomu EBook Reader averages 4.8 out of 5 from 1.6K ratings, while KyBook 3 Ebook Reader averages 4.7 from 4.7K ratings.

### Do Yomu EBook Reader or KyBook 3 Ebook Reader have ads?

Neither Yomu EBook Reader nor KyBook 3 Ebook Reader shows ads.

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

Yomu EBook Reader ships an update monthly, and KyBook 3 Ebook Reader every 5 days. Most recently, Yomu EBook Reader was updated on November 1, 2026 and KyBook 3 Ebook Reader on October 29, 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.*