# 브랜트폰 vs 시원스쿨 B2B

The clearest difference is in-app purchases: 브랜트폰 at none against 시원스쿨 B2B's 1. 시원스쿨 B2B's advantage is update cadence (every 6 weeks vs every 13 months). 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. 브랜트폰 asks for nothing beyond the download.

브랜트폰 ships an update every 13 months, 시원스쿨 B2B every 6 weeks. The most recent releases landed on October 2, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | 브랜트폰 | 시원스쿨 B2B |
| --- | --- | --- |
| 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 |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 13 months | **Every 6 weeks** |
| Monetization | — | Free |
| Size | 14 MB | 89 MB |
| Requires iOS | **12.0** | 13.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Seil Lee](https://appshunter.io/developer/1435142331) | [Siwonschool](https://appshunter.io/developer/473647838) |

## What reviewers say

### 브랜트폰

[App page](https://appshunter.io/ios/app/id1435142332)

**Features:** macOS Compatibility

**In-app purchases:** none


### 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 |


## Frequently asked questions

### Is 브랜트폰 free?

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

### Is 시원스쿨 B2B free?

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

### Do 브랜트폰 or 시원스쿨 B2B have ads?

Neither 브랜트폰 nor 시원스쿨 B2B shows ads.

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

브랜트폰 ships an update every 13 months, and 시원스쿨 B2B every 6 weeks. Most recently, 브랜트폰 was updated on October 2, 2026 and 시원스쿨 B2B on October 24, 2026.

---

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