# Merge Puzzle Game vs Stack Attack

The clearest difference is in-app purchases: Stack Attack at none against Merge Puzzle Game's 12. Stack Attack also leads on ads (none vs shown). On price, update cadence, device support and iOS requirement there is nothing between them.

Both are free to download. Merge Puzzle Game sells 12 in-app purchases, starting at $4.99 per 7 days. Stack Attack asks for nothing beyond the download.

Merge Puzzle Game ships an update monthly, Stack Attack every 4 weeks. The most recent releases landed on September 24, 2026 and May 16, 2026 respectively.

## The numbers

| Metric | Merge Puzzle Game | Stack Attack |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.9 (16K ratings)](https://appshunter.io/ios/app/merge-puzzle-game-m2-blocks/id1620319602/reviews)** | — |
| Number of ratings | **16K** | — |
| Positive reviews | 51.3% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Monthly | **Every 4 weeks** |
| Monetization | Free with in-app purchases | — |
| Size | 172 MB | 39 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Guru Smart Holding Limited](https://appshunter.io/developer/1499790773) | [Mikhail Razin](https://appshunter.io/developer/1460485493) |

## What reviewers say

### Merge Puzzle Game

[App page](https://appshunter.io/ios/app/merge-puzzle-game-m2-blocks/id1620319602)

This is a relaxing puzzle game where you merge numbered blocks to create higher numbers. Train your brain with addictive gameplay and a simple, beautiful design. Enjoy an infinite mode with no time limits and helpful boosters.

**Highlights:** Merge numbered blocks, Train your brain, Infinite mode, No timer, Amazing boosters, Simple, beautiful design

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

**In-app purchases (12)**

| Purchase | Price | Billing |
| --- | --- | --- |
| M2 Blocks Weekly Premium | $4.99 | per 7 days |
| XS GEM PACK | $0.99 | one-time |
| M GEM SALE | $1.99 | one-time |
| Beginner Package | $1.99 | one-time |
| S GEM PACK | $2.99 | one-time |
| L GEM SALE | $3.99 | one-time |
| M GEM PACK | $4.99 | one-time |
| Remove Ads | $6.99 | one-time |
| Gem Boost | $7.99 | one-time |
| L GEM PACK | $9.99 | one-time |
| XL GEM PACK | $24.99 | one-time |
| XXL GEM PACK | $49.99 | one-time |

**What reviewers like**

- 👍 Fun and addictive gameplay
- 💡 Challenging and engaging
- 🧠 Helps improve math skills

**What reviewers complain about**

- 🚧 Excessive and intrusive ads
- 🤯 Ads disrupt gameplay and flow
- 🔋 Ads drain battery life

**Reported bugs**

- Ads cause game to crash or freeze
- Ads randomly interrupt Spotify music playback

**Requested features**

- Reduce frequency and duration of ads
- Offer ad-free premium version
- Add option to track high scores


### Stack Attack

[App page](https://appshunter.io/ios/app/stack-attack-block-puzzle/id6449266462)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Merge Puzzle Game free?

Merge Puzzle Game is free to download, with in-app purchases available.

### Is Stack Attack free?

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

### Do Merge Puzzle Game or Stack Attack have ads?

Merge Puzzle Game shows ads; Stack Attack does not.

### Which is updated more often, Merge Puzzle Game or Stack Attack?

Merge Puzzle Game ships an update monthly, and Stack Attack every 4 weeks. Most recently, Merge Puzzle Game was updated on September 24, 2026 and Stack Attack on May 16, 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.*