# Merge HD vs Math Vs Undead

The clearest difference is in-app purchases: Merge HD at none against Math Vs Undead's 1. Merge HD also leads on ads (none vs shown) and review sentiment (74% vs 48%). Math Vs Undead's advantage is update cadence (every 6 months vs every 40 months) and device support (3 vs 1). On price, rating and ratings volume there is nothing between them.

Both are free to download. Math Vs Undead sells 1 one-off in-app purchase. Merge HD asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 4.3 for Merge HD against 4.3 for Math Vs Undead. Both are backed by a comparable volume of ratings — 124 and 148 respectively. Written reviews are what separate them: 74% of Merge HD's written reviews are positive against 48% of Math Vs Undead's.

Merge HD ships an update every 40 months, Math Vs Undead every 6 months. The most recent releases landed on October 21, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | Merge HD | Math Vs Undead |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.3 (124 ratings)](https://appshunter.io/ios/app/merge-hd/id547089892/reviews)** | [4.3 (148 ratings)](https://appshunter.io/ios/app/math-vs-undead-math-game/id687283022/reviews) |
| Number of ratings | 124 | **148** |
| Positive reviews | **73.6% of reviews** | 48.1% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 40 months | **Every 6 months** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 32 MB | 133 MB |
| Requires iOS | **6.0** | 13.0 |
| Devices | iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 9+ |
| Developer | [Funiza](https://appshunter.io/developer/1078093806) | [Peaksel](https://appshunter.io/developer/618105376) |

## What reviewers say

### Merge HD

[App page](https://appshunter.io/ios/app/merge-hd/id547089892)

Clear the digital mess by merging items and eliminating viruses within a time limit. Navigate through numerous levels and bonus stages, competing with others globally.

**Highlights:** Clear digital mess, Eliminate viruses, 72 levels, 12 bonus levels, Game Center support, Global and Facebook leaderboards

**Features:** macOS Compatibility

**In-app purchases:** none

**What reviewers like**

- 👍 Fun and addictive gameplay
- 🎨 Cute and nice graphics
- 💡 Original and interesting concept
- 🧠 Challenging and requires thought
- 😌 Relaxing and enjoyable

**What reviewers complain about**

- 🐛 Frequent crashes after levels
- 🐛 Game crashes on startup
- 🐛 Glitches and bugs
- ⚠️ Difficulty spikes
- 🔄 Outdated feel

**Reported bugs**

- Crashes after every level
- Crashes on level loading
- Game not appearing after download
- Microbes stuck in walls on level 3-6
- Last level not recognizing completed merges

**Requested features**

- More levels
- Bug fixes
- Improved difficulty balancing
- Turkish language support
- Universal app support


### Math Vs Undead

[App page](https://appshunter.io/ios/app/math-vs-undead-math-game/id687283022)

Engage in a thrilling math-based zombie shooter where solving arithmetic problems is your weapon. This game combines educational challenges with fun graphics to boost calculation speed and cognitive skills for all ages.

**Highlights:** Zombie shooter gameplay, Basic math operations (addition, subtraction, multiplication, division), 30 challenging levels, Improves calculation speed, Enhances cognitive functions, Eye-catching graphics

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock all levels | $4.99 | one-time |


## Frequently asked questions

### Is Merge HD free?

Merge HD is free to download, with no in-app purchases.

### Is Math Vs Undead free?

Math Vs Undead is free to download, with in-app purchases available.

### Which has better reviews, Merge HD or Math Vs Undead?

Merge HD is rated higher. Merge HD averages 4.3 out of 5 from 124 ratings, while Math Vs Undead averages 4.3 from 148 ratings.

### Do Merge HD or Math Vs Undead have ads?

Math Vs Undead shows ads; Merge HD does not.

### Which is updated more often, Merge HD or Math Vs Undead?

Merge HD ships an update every 40 months, and Math Vs Undead every 6 months. Most recently, Merge HD was updated on October 21, 2026 and Math Vs Undead on October 12, 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.*