# Concentration Sushi vs 神経衰弱

The clearest difference is rating: 神経衰弱 at 5.0 against Concentration Sushi's 4.0. 神経衰弱 also leads on update cadence (weekly vs every 3 months) and monetization model (ad-supported vs free with in-app purchases). On price, ratings volume, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

神経衰弱 holds the better App Store score, 5.0 against 4.0. Both are backed by a comparable volume of ratings — 2 and 3 respectively.

Concentration Sushi ships an update every 3 months, 神経衰弱 weekly. The most recent releases landed on November 10, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | Concentration Sushi | 神経衰弱 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.0 (2 ratings)](https://appshunter.io/ios/app/concentration-sushi/id458072561/reviews) | **[5.0 (3 ratings)](https://appshunter.io/ios/app/id1594062095/reviews)** |
| Number of ratings | 2 | **3** |
| Positive reviews | 95.0% of reviews | — |
| In-app purchases | No | No |
| Ads | Yes | Yes |
| Update frequency | Every 3 months | **Weekly** |
| Monetization | Free with in-app purchases | **Ad-supported** |
| Size | 132 MB | 49 MB |
| Requires iOS | 12.0 | 12.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Qualia Systems Inc.](https://appshunter.io/developer/388873648) | [Hideyuki Aono](https://appshunter.io/developer/1458194648) |

## What reviewers say

### Concentration Sushi

[App page](https://appshunter.io/ios/app/concentration-sushi/id458072561)

Enhance your focus with this memory-based game. Test your recall by matching sushi cards with varying storage times across multiple difficulty levels. Compete with friends via Game Center.

**Highlights:** Memory card matching, Multiple game modes, Adjustable card storage times, Game Center integration, Infinite mode

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### 神経衰弱

[App page](https://appshunter.io/ios/app/id1594062095)

A classic brain-training card game where players match numbers and colors to earn coins. Use collected coins to try your luck with the gacha feature. Enjoy a simple yet engaging memory challenge.

**Highlights:** Match numbers and colors, Earn coins, Gacha feature with collected coins, Brain training, Card game

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Concentration Sushi free?

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

### Is 神経衰弱 free?

神経衰弱 is free to download, with no in-app purchases.

### Which has better reviews, Concentration Sushi or 神経衰弱?

神経衰弱 is rated higher. Concentration Sushi averages 4.0 out of 5 from 2 ratings, while 神経衰弱 averages 5.0 from 3 ratings.

### Do Concentration Sushi or 神経衰弱 have ads?

Both Concentration Sushi and 神経衰弱 show ads.

### Which is updated more often, Concentration Sushi or 神経衰弱?

Concentration Sushi ships an update every 3 months, and 神経衰弱 weekly. Most recently, Concentration Sushi was updated on November 10, 2026 and 神経衰弱 on November 3, 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.*