# zMahjong 2 Concentration vs Stack & Blast

The clearest difference is price: Stack & Blast at Free against zMahjong 2 Concentration's $0.99. Stack & Blast also leads on update cadence (every 3 days vs every 4 months). zMahjong 2 Concentration's advantage is ads (none vs shown) and device support (4 vs 1). On in-app purchases there is nothing between them.

Stack & Blast is free to download; zMahjong 2 Concentration costs $0.99 up front. zMahjong 2 Concentration sells 3 one-off in-app purchases and Stack & Blast sells 5 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

zMahjong 2 Concentration ships an update every 4 months, Stack & Blast every 3 days. The most recent releases landed on October 30, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | zMahjong 2 Concentration | Stack & Blast |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | **[3.4 (5 ratings)](https://appshunter.io/ios/app/zmahjong-2-concentration/id452517188/reviews)** | — |
| Number of ratings | **5** | — |
| Positive reviews | 52.9% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 4 months | **Every 3 days** |
| Monetization | Paid | — |
| Size | 30 MB | 7 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPad, iPod, Apple TV** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Shen Zhongyuan](https://appshunter.io/developer/385090494) | [Piotr Gebski](https://appshunter.io/developer/1860417249) |

## What reviewers say

### 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 |


### Stack & Blast

[App page](https://appshunter.io/ios/app/stack-and-blast-block-puzzle/id6759009763)

**Features:** macOS Compatibility

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 500 Coins | $0.99 | one-time |
| Neon Skin Bundle | $1.99 | one-time |
| Remove Ads | $2.99 | one-time |
| 3,000 Coins | $3.99 | one-time |
| Starter Bundle | $4.99 | one-time |


## Frequently asked questions

### Is zMahjong 2 Concentration free?

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

### Is Stack & Blast free?

Stack & Blast is free to download, with in-app purchases available.

### Do zMahjong 2 Concentration or Stack & Blast have ads?

Stack & Blast shows ads; zMahjong 2 Concentration does not.

### Which is updated more often, zMahjong 2 Concentration or Stack & Blast?

zMahjong 2 Concentration ships an update every 4 months, and Stack & Blast every 3 days. Most recently, zMahjong 2 Concentration was updated on October 30, 2026 and Stack & Blast on October 25, 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.*