# 교보eBook vs 성북u

The clearest difference is rating: 교보eBook at 4.3 against 성북u's 3.0. 교보eBook also leads on ratings volume (290 vs 2). 성북u's advantage is in-app purchases (none vs 6) and review sentiment (33% vs 21%). On price, update cadence, 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. 성북u asks for nothing beyond the download.

교보eBook holds the better App Store score, 4.3 against 3.0. That said, the two scores are not equally well evidenced: 교보eBook has 290 ratings behind it against 2, so its average is the more settled of the two. Written reviews complicate that: 21% of 교보eBook's written reviews are positive against 33% of 성북u's, so the app with the better star average is not the one people write more warmly about.

Both ship on a similar rhythm, roughly every 3 weeks. The most recent releases landed on October 9, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | 교보eBook | 성북u |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.3 (290 ratings)](https://appshunter.io/ios/app/ebook-e/id445290463/reviews)** | [3.0 (2 ratings)](https://appshunter.io/ios/app/u/id472920010/reviews) |
| Number of ratings | **290** | 2 |
| Positive reviews | 21.1% of reviews | **33.3% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 3 weeks | Every 3 weeks |
| Monetization | Free with in-app purchases | **Free** |
| Size | 456 MB | 19 MB |
| Requires iOS | **15.0** | 15.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [KYOBO BOOK CENTRE CO,.LTD](https://appshunter.io/developer/395182148) | [(주)이씨오](https://appshunter.io/developer/371073988) |

## 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


### 성북u

[App page](https://appshunter.io/ios/app/u/id472920010)

This app unifies multiple libraries in the Seongbuk district, offering a single platform to search for and manage library resources. Users can reserve books, check loan status, and access their borrowing history across all integrated branches.

**Highlights:** Integrated library search, Book reservations and cancellations, Loan status and history, Renewal requests, Interlibrary loan applications, User authentication for services

**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 성북u free?

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

### Which has better reviews, 교보eBook or 성북u?

교보eBook is rated higher. 교보eBook averages 4.3 out of 5 from 290 ratings, while 성북u averages 3.0 from 2 ratings.

### Do 교보eBook or 성북u have ads?

Neither 교보eBook nor 성북u shows ads.

### Which is updated more often, 교보eBook or 성북u?

교보eBook ships an update every 3 weeks, and 성북u every 3 weeks. Most recently, 교보eBook was updated on October 9, 2026 and 성북u on October 2, 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.*