# Concentration Sushi vs Numbers Solitaire 2

The clearest difference is ads: Numbers Solitaire 2 at none against Concentration Sushi's shown. Numbers Solitaire 2 also leads on rating (4.2 vs 4.0) and iOS requirement (7.1 vs 12.0). On price, review sentiment, ratings volume and update cadence there is nothing between them.

Both are free to download. Concentration Sushi sells 2 one-off in-app purchases and Numbers Solitaire 2 sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Numbers Solitaire 2 holds the better App Store score, 4.2 against 4.0. Both are backed by a comparable volume of ratings — 2 and 5 respectively. Written reviews complicate that: 95% of Concentration Sushi's written reviews are positive against 93% of Numbers Solitaire 2's, so the app with the better star average is not the one people write more warmly about.

Both ship on a similar rhythm, roughly every 3 months. The most recent releases landed on October 4, 2026 and October 20, 2026 respectively.

## The numbers

| Metric | Concentration Sushi | Numbers Solitaire 2 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.0 (2 ratings)](https://appshunter.io/ios/app/concentration-sushi/id458072561/reviews) | **[4.2 (5 ratings)](https://appshunter.io/ios/app/numbers-solitaire-2/id665681190/reviews)** |
| Number of ratings | 2 | **5** |
| Positive reviews | **95.0% of reviews** | 92.6% of reviews |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 3 months | Every 3 months |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 132 MB | 18 MB |
| Requires iOS | 12.0 | **7.1** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Qualia Systems Inc.](https://appshunter.io/developer/388873648) | [Comgate](https://appshunter.io/developer/412681789) |

## 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 (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| V.S.Mode | $0.99 | one-time |
| No Ads | $3.99 | one-time |


### Numbers Solitaire 2

[App page](https://appshunter.io/ios/app/numbers-solitaire-2/id665681190)

A free, number-based card puzzle game designed for brain training. It features simple rules where players remove cards by connecting them numerically. Offers multiple game modes for varied challenges.

**Highlights:** Number-based card removal, Brain-training puzzle, Simple rules, Four game modes, Special card feature

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $1.99 | one-time |


## Frequently asked questions

### Is Concentration Sushi free?

Concentration Sushi is free to download, with in-app purchases available.

### Is Numbers Solitaire 2 free?

Numbers Solitaire 2 is free to download, with in-app purchases available.

### Which has better reviews, Concentration Sushi or Numbers Solitaire 2?

Numbers Solitaire 2 is rated higher. Concentration Sushi averages 4.0 out of 5 from 2 ratings, while Numbers Solitaire 2 averages 4.2 from 5 ratings.

### Do Concentration Sushi or Numbers Solitaire 2 have ads?

Concentration Sushi shows ads; Numbers Solitaire 2 does not.

### Which is updated more often, Concentration Sushi or Numbers Solitaire 2?

Concentration Sushi ships an update every 3 months, and Numbers Solitaire 2 every 3 months. Most recently, Concentration Sushi was updated on October 4, 2026 and Numbers Solitaire 2 on October 20, 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.*