# 공책 vs 머머 다이어리

The clearest difference is in-app purchases: 공책 at none against 머머 다이어리's 4. 공책 also leads on ads (none vs shown). 머머 다이어리's advantage is update cadence (every 2 days vs every 10 days). On price, device support and iOS requirement there is nothing between them.

Both are free to download. 머머 다이어리 sells 4 in-app purchases, starting at $3.99 per month. 공책 asks for nothing beyond the download.

공책 ships an update every 10 days, 머머 다이어리 every 2 days. The most recent releases landed on October 6, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | 공책 | 머머 다이어리 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 10 days | **Every 2 days** |
| Size | 79 MB | 74 MB |
| Requires iOS | 15.1 | **15.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [SAHWI KIM](https://appshunter.io/developer/1806627483) | [주식회사 이코드](https://appshunter.io/developer/1895356148) |

## What reviewers say

### 공책

[App page](https://appshunter.io/ios/app/ai/id6759238144)

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

**In-app purchases:** none


### 머머 다이어리

[App page](https://appshunter.io/ios/app/ai/id6763523333)

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 플러스 월간 | $3.99 | per month |
| 프로 월간 | $9.99 | per month |
| Plus 연간 | $34.99 | per year |
| 프로 연간 | $99.99 | per year |


## Frequently asked questions

### Is 공책 free?

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

### Is 머머 다이어리 free?

머머 다이어리 is free to download, with in-app purchases available.

### Do 공책 or 머머 다이어리 have ads?

머머 다이어리 shows ads; 공책 does not.

### Which is updated more often, 공책 or 머머 다이어리?

공책 ships an update every 10 days, and 머머 다이어리 every 2 days. Most recently, 공책 was updated on October 6, 2026 and 머머 다이어리 on October 8, 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.*