# 교보eBook vs 웅진OPMS 전자책뷰어

The clearest difference is rating: 교보eBook at 4.3 against 웅진OPMS 전자책뷰어's 1.0. 교보eBook also leads on ratings volume (290 vs 1) and review sentiment (21% vs 0%). 웅진OPMS 전자책뷰어's advantage is in-app purchases (none vs 6) and iOS requirement (9.0 vs 15.0). On price, ads and device support there is nothing between them.

Both are free to download. 교보eBook sells 6 in-app purchases, starting at $8.99 per month. 웅진OPMS 전자책뷰어 asks for nothing beyond the download.

교보eBook holds the better App Store score, 4.3 against 1.0. That said, the two scores are not equally well evidenced: 교보eBook has 290 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 21% of 교보eBook's written reviews are positive against 0% of 웅진OPMS 전자책뷰어's.

교보eBook ships an update every 3 weeks, 웅진OPMS 전자책뷰어 every 2 months. The most recent releases landed on September 28, 2026 and September 22, 2026 respectively.

## The numbers

| Metric | 교보eBook | 웅진OPMS 전자책뷰어 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.3 (290 ratings)](https://appshunter.io/ios/app/ebook-e/id445290463/reviews)** | [1.0 (1 ratings)](https://appshunter.io/ios/app/opms/id1201769721/reviews) |
| Number of ratings | **290** | 1 |
| Positive reviews | **21.1% of reviews** | 0.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 2 months |
| Monetization | Free with in-app purchases | **Free** |
| Size | 456 MB | 61 MB |
| Requires iOS | 15.0 | **9.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [KYOBO BOOK CENTRE CO,.LTD](https://appshunter.io/developer/395182148) | [OPMS Co., LTD.](https://appshunter.io/developer/408810462) |

## What reviewers say

### 교보eBook

[App page](https://appshunter.io/ios/app/ebook-e/id445290463)

This app offers a streamlined eBook reading experience with enhanced customization and management features. Access all your purchased and uploaded books in one place, enjoy free books without login, and sync your reading progress across multiple devices. Share favorite passages and convert text to speech for an enriched reading journey.

**Highlights:** Unified book management, Login-free access to free books, Cross-device reading synchronization (up to 5 devices), Highlighting, notes, and bookshelf synchronization, Social sharing of book passages, Text-to-speech functionality, Customizable reading environment, ePub3 standard support

**Features:** macOS Compatibility

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| sam무제한 (매월) | $8.99 | per month |
| sam3 (매월) | $8.99 | per month |
| 5,000캐시 | $3.99 | one-time |
| 10,000캐시 | $6.99 | one-time |
| 30,000캐시 | $22.99 | one-time |
| 50,000캐시 | $39.99 | one-time |

**What reviewers like**

- 🚀 Fast and efficient app
- 📚 Vast selection of ebooks
- 📝 Useful note-taking and highlighting features
- 🌍 Accessible from anywhere with ebook purchases
- 🔍 Intuitive search and browsing functionality

**What reviewers complain about**

- 🐛 Frequent app crashes and stability issues
- ⏱️ Slow page loading and navigation
- 📱 Suboptimal user interface and experience
- 🔋 High battery consumption
- 🔒 Lack of seamless cross-device synchronization

**Reported bugs**

- Inconsistent page navigation and jumping between pages
- Unreliable login and account management
- Compatibility issues with newer devices and operating systems
- Unexpected app crashes and freezes during use
- Delayed or failed ebook downloads

**Requested features**

- Implement Apple Pencil support for better note-taking
- Add more customization options for fonts, margins, and layout
- Improve cross-device synchronization of bookmarks, highlights, and notes
- Introduce a night mode or dark theme for comfortable reading
- Optimize app performance and reduce loading times


### 웅진OPMS 전자책뷰어

[App page](https://appshunter.io/ios/app/opms/id1201769721)

Access and read a wide selection of e-books from the OPMS mall directly on your device. Organize your library, search content quickly, and customize your reading experience with bookmarks, highlights, and adjustable text settings for optimal readability.

**Highlights:** Organized digital library, Fast text search, Bookmark and highlight functionality, Customizable background and font size, Optimized readability across devices

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is 교보eBook free?

교보eBook is free to download, with in-app purchases available.

### Is 웅진OPMS 전자책뷰어 free?

웅진OPMS 전자책뷰어 is free to download, with no in-app purchases.

### Which has better reviews, 교보eBook or 웅진OPMS 전자책뷰어?

교보eBook is rated higher. 교보eBook averages 4.3 out of 5 from 290 ratings, while 웅진OPMS 전자책뷰어 averages 1.0 from 1 ratings.

### Do 교보eBook or 웅진OPMS 전자책뷰어 have ads?

Neither 교보eBook nor 웅진OPMS 전자책뷰어 shows ads.

### Which is updated more often, 교보eBook or 웅진OPMS 전자책뷰어?

교보eBook ships an update every 3 weeks, and 웅진OPMS 전자책뷰어 every 2 months. Most recently, 교보eBook was updated on September 28, 2026 and 웅진OPMS 전자책뷰어 on September 22, 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.*