# K vs KOA 2025

The clearest difference is iOS requirement: K at 11.0 against KOA 2025's 13.0. 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.

## The numbers

| Metric | K | KOA 2025 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | — | Every 5 days |
| Size | 14 MB | 80 MB |
| Requires iOS | **11.0** | 13.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 12+ | 12+ |
| Developer | [Thepowerbrains.co.ltd.,](https://appshunter.io/developer/539385663) | [대한정형외과학회](https://appshunter.io/developer/1458330220) |

## What reviewers say

### K

[App page](https://appshunter.io/ios/app/k-app/id1459729683)

**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 K free?

K 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 K or KOA 2025 have ads?

Neither K nor KOA 2025 shows ads.

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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.*