# 에스원 모두(MoDU) vs B world

The clearest difference is review sentiment: B world at 36% against 에스원 모두(MoDU)'s 14%. 에스원 모두(MoDU)'s advantage is iOS requirement (13.0 vs 15.6). On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Both ship on a similar rhythm, roughly monthly. The most recent releases landed on September 27, 2026 and September 29, 2026 respectively.

## The numbers

| Metric | 에스원 모두(MoDU) | B world |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 13.6% of reviews | **36.4% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Monthly | Monthly |
| Monetization | Free | Free |
| Size | 220 MB | 21 MB |
| Requires iOS | **13.0** | 15.6 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [S1 Corporation](https://appshunter.io/developer/352726008) | [SK Broadband CO.LTD](https://appshunter.io/developer/489725125) |

## What reviewers say

### 에스원 모두(MoDU)

[App page](https://appshunter.io/ios/app/modu/id6451223244)

Manage your S1 security service contracts, view video feeds, and remotely control security systems. This app allows direct application and setup for various software services.

**Highlights:** Contract information lookup, Remote security system control, Video feed viewing, Software service application, Service setup and configuration

**In-app purchases:** none


### B world

[App page](https://appshunter.io/ios/app/b-world/id6463710246)

Manage your SK Broadband services, including IPTV and internet, with this app. Access product recommendations, self-service options, and customer support. Enjoy seamless content viewing and direct purchasing of services.

**Highlights:** Service management, Product recommendations, Self-service troubleshooting, Content browsing and viewing, Direct service purchasing, Benefit and event information

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

**In-app purchases:** none


## Frequently asked questions

### Is 에스원 모두(MoDU) free?

에스원 모두(MoDU) is free to download, with no in-app purchases.

### Is B world free?

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

### Do 에스원 모두(MoDU) or B world have ads?

Neither 에스원 모두(MoDU) nor B world shows ads.

### Which is updated more often, 에스원 모두(MoDU) or B world?

에스원 모두(MoDU) ships an update monthly, and B world monthly. Most recently, 에스원 모두(MoDU) was updated on September 27, 2026 and B world on September 29, 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.*