# 교보문고 vs 성북u

The clearest difference is rating: 교보문고 at 3.7 against 성북u's 3.0. 교보문고 also leads on ratings volume (147 vs 2) and review sentiment (44% vs 33%). 성북u's advantage is in-app purchases (none vs 6). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. 교보문고 sells 6 in-app purchases, starting at $6.99 per month. 성북u asks for nothing beyond the download.

교보문고 holds the better App Store score, 3.7 against 3.0. That said, the two scores are not equally well evidenced: 교보문고 has 147 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 44% of 교보문고's written reviews are positive against 33% of 성북u's.

Both ship on a similar rhythm, roughly every 3 weeks. The most recent releases landed on October 15, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | 교보문고 | 성북u |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.7 (147 ratings)](https://appshunter.io/ios/app/id464243977/reviews)** | [3.0 (2 ratings)](https://appshunter.io/ios/app/u/id472920010/reviews) |
| Number of ratings | **147** | 2 |
| Positive reviews | **44.4% of reviews** | 33.3% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 3 weeks | Every 3 weeks |
| Monetization | — | Free |
| Size | 133 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

### 교보문고

[App page](https://appshunter.io/ios/app/id464243977)

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| sam3 (매월) | $6.99 | per month |
| sam무제한 (매월) | $6.99 | 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 |


### 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 교보문고 free?

교보문고 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, 교보문고 or 성북u?

교보문고 is rated higher. 교보문고 averages 3.7 out of 5 from 147 ratings, while 성북u averages 3.0 from 2 ratings.

### Do 교보문고 or 성북u have ads?

Neither 교보문고 nor 성북u shows ads.

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

교보문고 ships an update every 3 weeks, and 성북u every 3 weeks. Most recently, 교보문고 was updated on October 15, 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.*