# 시원스쿨 B2B vs 중구구립도서관

The clearest difference is review sentiment: 시원스쿨 B2B at 64% against 중구구립도서관's 0%. 중구구립도서관's advantage is in-app purchases (none vs 1) and update cadence (every 11 days vs every 6 weeks). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. 시원스쿨 B2B sells 1 one-off in-app purchase. 중구구립도서관 asks for nothing beyond the download.

시원스쿨 B2B ships an update every 6 weeks, 중구구립도서관 every 11 days. The most recent releases landed on November 6, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | 시원스쿨 B2B | 중구구립도서관 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.9 (14 ratings)](https://appshunter.io/ios/app/b2b/id1466172973/reviews)** | — |
| Number of ratings | **14** | — |
| Positive reviews | **64.3% of reviews** | 0.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Every 11 days** |
| Monetization | Free | — |
| Size | 89 MB | 16 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Siwonschool](https://appshunter.io/developer/473647838) | [jnet co.,ltd](https://appshunter.io/developer/492869401) |

## What reviewers say

### 시원스쿨 B2B

[App page](https://appshunter.io/ios/app/b2b/id1466172973)

This app provides access to all lectures for corporate and group members. Enjoy convenient lecture playback with background audio, seamless continuation, and offline downloads. Track your progress by package or individual course.

**Highlights:** Background playback, Lecture review/study question submission, Continue listening to lectures, Download and select lectures, View progress by package/course

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 기초영어 왕초보속성코스 | $99.99 | one-time |


### 중구구립도서관

[App page](https://appshunter.io/ios/app/id1628975418)

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

**In-app purchases:** none


## Frequently asked questions

### Is 시원스쿨 B2B free?

시원스쿨 B2B is free to download, with in-app purchases available.

### Is 중구구립도서관 free?

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

### Do 시원스쿨 B2B or 중구구립도서관 have ads?

Neither 시원스쿨 B2B nor 중구구립도서관 shows ads.

### Which is updated more often, 시원스쿨 B2B or 중구구립도서관?

시원스쿨 B2B ships an update every 6 weeks, and 중구구립도서관 every 11 days. Most recently, 시원스쿨 B2B was updated on November 6, 2026 and 중구구립도서관 on November 3, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*