# 아차차 vs sobolo

The clearest difference is in-app purchases: 아차차 at none against sobolo's 3. 아차차 also leads on update cadence (every 2 days vs every 10 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. sobolo sells 3 one-off in-app purchases. 아차차 asks for nothing beyond the download.

아차차 ships an update every 2 days, sobolo every 10 months. The most recent releases landed on October 5, 2026 and September 26, 2026 respectively.

## The numbers

| Metric | 아차차 | sobolo |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | **Every 2 days** | Every 10 months |
| Size | 12 MB | 59 MB |
| Requires iOS | **14.0** | 15.6 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 17+ | 4+ |
| Developer | [Chaehui Seo](https://appshunter.io/developer/1533035572) | [SEJIN PARK](https://appshunter.io/developer/1571443134) |

## What reviewers say

### 아차차

[App page](https://appshunter.io/ios/app/id6468587143)

**In-app purchases:** none


### sobolo

[App page](https://appshunter.io/ios/app/sobolo-note-and-diary/id6739229779)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| No Ads | $0.49 | one-time |
| Split Frames | $0.49 | one-time |
| No Limits | $0.49 | one-time |


## Frequently asked questions

### Is 아차차 free?

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

### Is sobolo free?

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

### Do 아차차 or sobolo have ads?

Both 아차차 and sobolo show ads.

### Which is updated more often, 아차차 or sobolo?

아차차 ships an update every 2 days, and sobolo every 10 months. Most recently, 아차차 was updated on October 5, 2026 and sobolo on September 26, 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.*