# CONCENTRATION(神経衰弱ゲーム) vs Concentration

The clearest difference is ads: CONCENTRATION(神経衰弱ゲーム) at none against Concentration's shown. CONCENTRATION(神経衰弱ゲーム) also leads on iOS requirement (9.0 vs 15.6). 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 | CONCENTRATION(神経衰弱ゲーム) | Concentration |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.0 (1 ratings)](https://appshunter.io/ios/app/concentration/id1447839201/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | — | Every 8 months |
| Monetization | Free | — |
| Size | 145 MB | 117 MB |
| Requires iOS | **9.0** | 15.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Koichi Iwasaki](https://appshunter.io/developer/1308795626) | [Mitsuaki Tanabe](https://appshunter.io/developer/987215117) |

## What reviewers say

### CONCENTRATION(神経衰弱ゲーム)

[App page](https://appshunter.io/ios/app/concentration/id1447839201)

A simple card matching game where players flip pairs of identical cards to collect them. Track your results and enjoy a quiet, ad-free gaming experience.

**Highlights:** Simple card matching gameplay, Track game results, Quiet, no sound experience, Ad-free gameplay, Suitable for all ages

**Features:** macOS Compatibility

**In-app purchases:** none


### Concentration

[App page](https://appshunter.io/ios/app/concentration-card-game/id6670733657)

**In-app purchases:** none


## Frequently asked questions

### Is CONCENTRATION(神経衰弱ゲーム) free?

CONCENTRATION(神経衰弱ゲーム) is free to download, with no in-app purchases.

### Is Concentration free?

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

### Do CONCENTRATION(神経衰弱ゲーム) or Concentration have ads?

Concentration shows ads; CONCENTRATION(神経衰弱ゲーム) 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.*