# TheLostKOSM vs 제주미션투어

The clearest difference is update cadence: TheLostKOSM at weekly against 제주미션투어's every 3 months. 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.

TheLostKOSM ships an update weekly, 제주미션투어 every 3 months. The most recent releases landed on September 19, 2026 and September 17, 2026 respectively.

## The numbers

| Metric | TheLostKOSM | 제주미션투어 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Weekly** | Every 3 months |
| Size | 172 MB | 295 MB |
| Requires iOS | **12.0** | 13.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Korea National Ocean Science Museum](https://appshunter.io/developer/1625817672) | [Bonghyun Seo](https://appshunter.io/developer/621242124) |

## What reviewers say

### TheLostKOSM

[App page](https://appshunter.io/ios/app/thelostkosm/id1626500208)

**Features:** macOS Compatibility

**In-app purchases:** none


### 제주미션투어

[App page](https://appshunter.io/ios/app/id6444251749)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is TheLostKOSM free?

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

### Is 제주미션투어 free?

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

### Do TheLostKOSM or 제주미션투어 have ads?

Neither TheLostKOSM nor 제주미션투어 shows ads.

### Which is updated more often, TheLostKOSM or 제주미션투어?

TheLostKOSM ships an update weekly, and 제주미션투어 every 3 months. Most recently, TheLostKOSM was updated on September 19, 2026 and 제주미션투어 on September 17, 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.*