# 아차차 vs Amatdda

The clearest difference is in-app purchases: 아차차 at none against Amatdda's 2. 아차차 also leads on update cadence (every 2 days vs every 6 days) and iOS requirement (14.0 vs 16.0). On price, ads and device support there is nothing between them.

Both are free to download. Amatdda sells 2 in-app purchases, starting at $1.99 per month. 아차차 asks for nothing beyond the download.

아차차 ships an update every 2 days, Amatdda every 6 days. The most recent releases landed on October 27, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | 아차차 | Amatdda |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | **Every 2 days** | Every 6 days |
| Size | 12 MB | 97 MB |
| Requires iOS | **14.0** | 16.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 17+ | 4+ |
| Developer | [Chaehui Seo](https://appshunter.io/developer/1533035572) | [Bigseasons](https://appshunter.io/developer/1579271908) |

## What reviewers say

### 아차차

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

**In-app purchases:** none


### Amatdda

[App page](https://appshunter.io/ios/app/amatdda-countdown-and-reminders/id6751563264)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $1.99 | per month |
| Yearly | $14.99 | per year |


## Frequently asked questions

### Is 아차차 free?

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

### Is Amatdda free?

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

### Do 아차차 or Amatdda have ads?

Both 아차차 and Amatdda show ads.

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

아차차 ships an update every 2 days, and Amatdda every 6 days. Most recently, 아차차 was updated on October 27, 2026 and Amatdda on October 30, 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.*