# Wonder World System vs KOGS 2026

The clearest difference is ads: Wonder World System at none against KOGS 2026's shown. Wonder World System also leads on iOS requirement (13.0 vs 16.0). On price, 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 | Wonder World System | KOGS 2026 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 3 weeks | — |
| Size | 17 MB | 140 MB |
| Requires iOS | **13.0** | 16.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 17+ |
| Developer | [Merak Tech Company For Integrated Solutions](https://appshunter.io/developer/1550580733) | [Society of Petroleum Engineers](https://appshunter.io/developer/462296248) |

## What reviewers say

### Wonder World System

[App page](https://appshunter.io/ios/app/wonder-world-system/id1643652978)

**Features:** macOS Compatibility

**In-app purchases:** none


### KOGS 2026

[App page](https://appshunter.io/ios/app/kogs-2026/id6756704724)

**Features:** macOS Compatibility, Apple Wallet

**In-app purchases:** none


## Frequently asked questions

### Is Wonder World System free?

Wonder World System is free to download, with no in-app purchases.

### Is KOGS 2026 free?

KOGS 2026 is free to download, with no in-app purchases.

### Do Wonder World System or KOGS 2026 have ads?

KOGS 2026 shows ads; Wonder World System does not.

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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.*