# 일기짱 vs SCM RED

The clearest difference is update cadence: SCM RED at every 10 days against 일기짱's every 3 months. 일기짱's advantage is iOS requirement (13.0 vs 18.0). On price, ads, in-app purchases and device support there is nothing between them.

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

일기짱 ships an update every 3 months, SCM RED every 10 days. The most recent releases landed on September 2, 2026 and September 13, 2026 respectively.

## The numbers

| Metric | 일기짱 | SCM RED |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 12.5% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 10 days** |
| Size | 11 MB | 23 MB |
| Requires iOS | **13.0** | 18.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [SUBEX Co., Ltd.](https://appshunter.io/developer/1503108363) | [CNFIT Co., Ltd.](https://appshunter.io/developer/1630621688) |

## What reviewers say

### 일기짱

[App page](https://appshunter.io/ios/app/id1503108364)

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

**In-app purchases:** none


### SCM RED

[App page](https://appshunter.io/ios/app/scm-red/id6447786419)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is 일기짱 free?

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

### Is SCM RED free?

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

### Do 일기짱 or SCM RED have ads?

Neither 일기짱 nor SCM RED shows ads.

### Which is updated more often, 일기짱 or SCM RED?

일기짱 ships an update every 3 months, and SCM RED every 10 days. Most recently, 일기짱 was updated on September 2, 2026 and SCM RED on September 13, 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.*