# KOR.TJ vs OS one SM

The clearest difference is device support: OS one SM at 3 against KOR.TJ's —. KOR.TJ's advantage is iOS requirement (12.0 vs 17.0). On price and in-app purchases 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 | KOR.TJ | OS one SM |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | — | No |
| Update frequency | — | Every 9 days |
| Size | 30 MB | 48 MB |
| Requires iOS | **12.0** | 17.0 |
| Devices | — | **iPhone, iPad, Mac** |
| Age rating | 17+ | 4+ |
| Developer | [Mirqurbon Naimov](https://appshunter.io/developer/1710778117) | [Olimjon Sharipov](https://appshunter.io/developer/6792006248) |

## What reviewers say

### KOR.TJ

[App page](https://appshunter.io/ios/app/kortj/id6478083890)

**In-app purchases:** none


### OS one SM

[App page](https://appshunter.io/ios/app/os-one-sm/id6792013294)

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is KOR.TJ free?

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

### Is OS one SM free?

OS one SM is free to download, with no in-app purchases.

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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.*