# iRevolution vs zMahjong 2 Concentration

The clearest difference is review sentiment: iRevolution at 100% against zMahjong 2 Concentration's 53%. iRevolution also leads on rating (4.0 vs 3.4) and in-app purchases (none vs 3). On price, ratings volume, update cadence and ads there is nothing between them.

iRevolution costs $0.99 and zMahjong 2 Concentration $0.99 up front. zMahjong 2 Concentration sells 3 one-off in-app purchases. iRevolution asks for nothing beyond the download.

iRevolution holds the better App Store score, 4.0 against 3.4. Both are backed by a comparable volume of ratings — 4 and 5 respectively. Written reviews point the same way: 100% of iRevolution's written reviews are positive against 53% of zMahjong 2 Concentration's.

iRevolution ships an update every 3 months, zMahjong 2 Concentration every 4 months. The most recent releases landed on October 8, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | iRevolution | zMahjong 2 Concentration |
| --- | --- | --- |
| Price | $0.99 | $0.99 |
| Rating | **[4.0 (4 ratings)](https://appshunter.io/ios/app/irevolution/id322644836/reviews)** | [3.4 (5 ratings)](https://appshunter.io/ios/app/zmahjong-2-concentration/id452517188/reviews) |
| Number of ratings | 4 | **5** |
| Positive reviews | **100.0% of reviews** | 52.9% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 3 months** | Every 4 months |
| Monetization | Paid | Paid |
| Size | 5 MB | 25 MB |
| Requires iOS | **9.0** | 15.0 |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, iPod, Apple TV** |
| Age rating | 4+ | 4+ |
| Developer | [RUCKYGAMES CO., LTD.](https://appshunter.io/developer/315948909) | [Shen Zhongyuan](https://appshunter.io/developer/385090494) |

## What reviewers say

### iRevolution

[App page](https://appshunter.io/ios/app/irevolution/id322644836)

A digital card game popular in Japan, known as "Multi millionaire." This game offers a strategic experience that can be beneficial for individuals seeking mental stimulation. It features GameCenter integration for competitive play.

**Highlights:** Digital card game, Popular in Japan, GameCenter integration, Strategic gameplay, Suitable for anxious individuals

**Features:** Vision Pro support

**In-app purchases:** none


### zMahjong 2 Concentration

[App page](https://appshunter.io/ios/app/zmahjong-2-concentration/id452517188)

This game tests your focus by requiring you to find and remove matching tiles based on a randomly selected reference tile. It offers a challenging experience that is harder than it initially appears, with multiple language options and leaderboards.

**Highlights:** Match identical tiles to the reference tile, Remove all matching tiles before removing the reference, Randomly selected reference tile each round, Supports multiple languages, Game Center leaderboards, Landscape mode for larger display

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 100 | $0.99 | one-time |
| 200 | $1.99 | one-time |
| 300 | $2.99 | one-time |


## Frequently asked questions

### Is iRevolution free?

iRevolution costs $0.99, with no in-app purchases.

### Is zMahjong 2 Concentration free?

zMahjong 2 Concentration costs $0.99, and also offers in-app purchases.

### Which has better reviews, iRevolution or zMahjong 2 Concentration?

iRevolution is rated higher. iRevolution averages 4.0 out of 5 from 4 ratings, while zMahjong 2 Concentration averages 3.4 from 5 ratings.

### Do iRevolution or zMahjong 2 Concentration have ads?

Neither iRevolution nor zMahjong 2 Concentration shows ads.

### Which is updated more often, iRevolution or zMahjong 2 Concentration?

iRevolution ships an update every 3 months, and zMahjong 2 Concentration every 4 months. Most recently, iRevolution was updated on October 8, 2026 and zMahjong 2 Concentration on October 2, 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.*