# COMM.IN (컴인) 스탭용 vs Sungong

The clearest difference is ads: COMM.IN (컴인) 스탭용 at none against Sungong's shown. COMM.IN (컴인) 스탭용 also leads on device support (3 vs 1). Sungong's advantage is update cadence (every 11 days vs every 4 months). On price, in-app purchases and iOS requirement there is nothing between them.

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

COMM.IN (컴인) 스탭용 ships an update every 4 months, Sungong every 11 days. The most recent releases landed on September 13, 2026 and September 12, 2026 respectively.

## The numbers

| Metric | COMM.IN (컴인) 스탭용 | Sungong |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 4 months | **Every 11 days** |
| Size | 23 MB | 51 MB |
| Requires iOS | **16** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [MK Soft Co., Ltd.](https://appshunter.io/developer/1578990526) | [joonseo park](https://appshunter.io/developer/1265149051) |

## What reviewers say

### COMM.IN (컴인) 스탭용

[App page](https://appshunter.io/ios/app/commin/id6745119230)

**Features:** macOS Compatibility

**In-app purchases:** none


### Sungong

[App page](https://appshunter.io/ios/app/sungong-pomodoro-study-timer/id6776498059)

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

**In-app purchases:** none


## Frequently asked questions

### Is COMM.IN (컴인) 스탭용 free?

COMM.IN (컴인) 스탭용 is free to download, with no in-app purchases.

### Is Sungong free?

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

### Do COMM.IN (컴인) 스탭용 or Sungong have ads?

Sungong shows ads; COMM.IN (컴인) 스탭용 does not.

### Which is updated more often, COMM.IN (컴인) 스탭용 or Sungong?

COMM.IN (컴인) 스탭용 ships an update every 4 months, and Sungong every 11 days. Most recently, COMM.IN (컴인) 스탭용 was updated on September 13, 2026 and Sungong on September 12, 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.*