# 블루닥 vs KOA 2025

The clearest difference is update cadence: KOA 2025 at every 5 days against 블루닥's every 2 weeks. 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.

블루닥 ships an update every 2 weeks, KOA 2025 every 5 days. The most recent releases landed on October 7, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | 블루닥 | KOA 2025 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 weeks | **Every 5 days** |
| Size | 34 MB | 80 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 12+ |
| Developer | [(주)블루엠텍](https://appshunter.io/developer/1598078675) | [대한정형외과학회](https://appshunter.io/developer/1458330220) |

## What reviewers say

### 블루닥

[App page](https://appshunter.io/ios/app/id6484506612)

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

**In-app purchases:** none


### KOA 2025

[App page](https://appshunter.io/ios/app/koa-2025/id6751926646)

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

**In-app purchases:** none


## Frequently asked questions

### Is 블루닥 free?

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

### Is KOA 2025 free?

KOA 2025 is free to download, with no in-app purchases.

### Do 블루닥 or KOA 2025 have ads?

Neither 블루닥 nor KOA 2025 shows ads.

### Which is updated more often, 블루닥 or KOA 2025?

블루닥 ships an update every 2 weeks, and KOA 2025 every 5 days. Most recently, 블루닥 was updated on October 7, 2026 and KOA 2025 on October 8, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*