# 코딩챌린지 vs DDAYO

The clearest difference is in-app purchases: DDAYO at none against 코딩챌린지's 3. DDAYO also leads on update cadence (daily vs every 6 days). 코딩챌린지's advantage is device support (3 vs 1) and iOS requirement (11.0 vs 18.0). On price and ads there is nothing between them.

Both are free to download. 코딩챌린지 sells 3 in-app purchases, starting at $1.99 per month. DDAYO asks for nothing beyond the download.

코딩챌린지 ships an update every 6 days, DDAYO daily. The most recent releases landed on October 27, 2026 and October 23, 2026 respectively.

## The numbers

| Metric | 코딩챌린지 | DDAYO |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 6 days | **Daily** |
| Size | 52 MB | 46 MB |
| Requires iOS | **11.0** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [YOUNGKYUN KANG](https://appshunter.io/developer/1362410195) | [JinGyun Jeong](https://appshunter.io/developer/1535411435) |

## What reviewers say

### 코딩챌린지

[App page](https://appshunter.io/ios/app/id1625309702)

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1개월 광고제거 | $1.99 | per month |
| 3개월 광고제거 | $2.99 | per 3 months |
| 1년 광고제거 | $7.99 | per year |


### DDAYO

[App page](https://appshunter.io/ios/app/ddayo/id6743990712)

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

**In-app purchases:** none


## Frequently asked questions

### Is 코딩챌린지 free?

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

### Is DDAYO free?

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

### Do 코딩챌린지 or DDAYO have ads?

Neither 코딩챌린지 nor DDAYO shows ads.

### Which is updated more often, 코딩챌린지 or DDAYO?

코딩챌린지 ships an update every 6 days, and DDAYO daily. Most recently, 코딩챌린지 was updated on October 27, 2026 and DDAYO on October 23, 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.*