# Flag Quiz Time Attack vs Simple Concentration Game

The clearest difference is ads: Flag Quiz Time Attack at none against Simple Concentration Game's shown. Flag Quiz Time Attack also leads on update cadence (every 4 days vs every 48 months). Simple Concentration Game's advantage is iOS requirement (13.0 vs 18.0). 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.

Flag Quiz Time Attack ships an update every 4 days, Simple Concentration Game every 48 months. Both last shipped on November 7, 2026.

## The numbers

| Metric | Flag Quiz Time Attack | Simple Concentration Game |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | **Every 4 days** | Every 48 months |
| Size | 44 MB | 101 MB |
| Requires iOS | 18.0 | **13.0** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Naoya Sato](https://appshunter.io/developer/1629194164) | [hideaki fukumura](https://appshunter.io/developer/1629984757) |

## What reviewers say

### Flag Quiz Time Attack

[App page](https://appshunter.io/ios/app/flag-quiz-time-attack/id1629322097)

**Features:** macOS Compatibility

**In-app purchases:** none


### Simple Concentration Game

[App page](https://appshunter.io/ios/app/simple-concentration-game/id6444276614)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Flag Quiz Time Attack free?

Flag Quiz Time Attack is free to download, with no in-app purchases.

### Is Simple Concentration Game free?

Simple Concentration Game is free to download, with no in-app purchases.

### Do Flag Quiz Time Attack or Simple Concentration Game have ads?

Simple Concentration Game shows ads; Flag Quiz Time Attack does not.

### Which is updated more often, Flag Quiz Time Attack or Simple Concentration Game?

Flag Quiz Time Attack ships an update every 4 days, and Simple Concentration Game every 48 months. Most recently, Flag Quiz Time Attack was updated on November 7, 2026 and Simple Concentration Game on November 7, 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.*