# World Flags Challenges vs Sudo

The clearest difference is ads: Sudo at none against World Flags Challenges's shown. World Flags Challenges's advantage is iOS requirement (13.0 vs 15.1). 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 | World Flags Challenges | Sudo |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 2 days | — |
| Size | 25 MB | 37 MB |
| Requires iOS | **13.0** | 15.1 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Vinicius Fortes](https://appshunter.io/developer/1726213069) | [Sooho Yu](https://appshunter.io/developer/1468243577) |

## What reviewers say

### World Flags Challenges

[App page](https://appshunter.io/ios/app/world-flags-challenges/id6503302130)

**Features:** macOS Compatibility

**In-app purchases:** none


### Sudo

[App page](https://appshunter.io/ios/app/sudo-capital-quiz/id6746423367)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is World Flags Challenges free?

World Flags Challenges is free to download, with no in-app purchases.

### Is Sudo free?

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

### Do World Flags Challenges or Sudo have ads?

World Flags Challenges shows ads; Sudo 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.*