# Stack 8 vs Merge'n Defense

The clearest difference is review sentiment: Stack 8 at 80% against Merge'n Defense's 0%. Stack 8 also leads on rating (4.3 vs 1.0) and ads (none vs shown). Merge'n Defense's advantage is in-app purchases (none vs 2) and update cadence (every 9 days vs every 5 months). On price and device support there is nothing between them.

Both are free to download. Stack 8 sells 2 one-off in-app purchases. Merge'n Defense asks for nothing beyond the download.

Stack 8 holds the better App Store score, 4.3 against 1.0. Both are backed by a comparable volume of ratings — 6 and 2 respectively. Written reviews point the same way: 80% of Stack 8's written reviews are positive against 0% of Merge'n Defense's.

Stack 8 ships an update every 5 months, Merge'n Defense every 9 days. The most recent releases landed on October 7, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | Stack 8 | Merge'n Defense |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.3 (6 ratings)](https://appshunter.io/ios/app/stack-8/id1093455092/reviews)** | [1.0 (2 ratings)](https://appshunter.io/ios/app/mergen-defense/id6446840533/reviews) |
| Number of ratings | **6** | 2 |
| Positive reviews | **80.0% of reviews** | 0.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | Every 5 months | **Every 9 days** |
| Monetization | Free with in-app purchases | **Ad-supported** |
| Size | 2 MB | 140 MB |
| Requires iOS | 16.0 | **12.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 12+ |
| Developer | [THE RISE COLLECTION](https://appshunter.io/developer/1000072797) | [Ali Said Yuksel](https://appshunter.io/developer/1481717311) |

## What reviewers say

### Stack 8

[App page](https://appshunter.io/ios/app/stack-8/id1093455092)

Tap to perfectly stack pixels in this endless challenge. One mistake means losing a pixel. Test your reflexes and precision to keep stacking.

**Highlights:** Endless gameplay, Precise tapping mechanics, Pixel stacking challenge, Reflex and precision testing, Simple one-tap controls

**Features:** macOS Compatibility

**In-app purchases (2)**

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


### Merge'n Defense

[App page](https://appshunter.io/ios/app/mergen-defense/id6446840533)

Engage in a strategic tower defense experience that combines merge mechanics with action. Defend your castle by merging obstacles to enhance their power and unlock abilities. Explore new levels and strategies in this visually appealing game.

**Highlights:** Merge mechanics for stronger defenses, Strategic obstacle placement, Action-packed tower defense gameplay, Unlock special abilities, Evolving game with new levels, Stunning graphics

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Stack 8 free?

Stack 8 is free to download, with in-app purchases available.

### Is Merge'n Defense free?

Merge'n Defense is free to download, with no in-app purchases.

### Which has better reviews, Stack 8 or Merge'n Defense?

Stack 8 is rated higher. Stack 8 averages 4.3 out of 5 from 6 ratings, while Merge'n Defense averages 1.0 from 2 ratings.

### Do Stack 8 or Merge'n Defense have ads?

Merge'n Defense shows ads; Stack 8 does not.

### Which is updated more often, Stack 8 or Merge'n Defense?

Stack 8 ships an update every 5 months, and Merge'n Defense every 9 days. Most recently, Stack 8 was updated on October 7, 2026 and Merge'n Defense on October 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.*