# Alien Robot Defender vs The Math Zombie

The clearest difference is price: Alien Robot Defender at Free against The Math Zombie's $0.99. Alien Robot Defender also leads on update cadence (every 2 months vs every 66 months) and rating (5.0 vs 4.8). The Math Zombie's advantage is ratings volume (4 vs 1). On review sentiment, ads, in-app purchases and device support there is nothing between them.

Alien Robot Defender is free to download; The Math Zombie costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Alien Robot Defender holds the better App Store score, 5.0 against 4.8. Both are backed by a comparable volume of ratings — 1 and 4 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

Alien Robot Defender ships an update every 2 months, The Math Zombie every 66 months. The most recent releases landed on October 7, 2026 and September 29, 2026 respectively.

## The numbers

| Metric | Alien Robot Defender | The Math Zombie |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/alien-robot-defender/id460633266/reviews)** | [4.8 (4 ratings)](https://appshunter.io/ios/app/the-math-zombie/id1513661978/reviews) |
| Number of ratings | 1 | **4** |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 66 months |
| Monetization | **Free** | Paid |
| Size | 11 MB | 47 MB |
| Requires iOS | **6.0** | 13.2 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Mike Hempfling](https://appshunter.io/developer/422781074) | [MM&F Software LLC](https://appshunter.io/developer/1498948648) |

## What reviewers say

### Alien Robot Defender

[App page](https://appshunter.io/ios/app/alien-robot-defender/id460633266)

Engage in a classic side-scrolling shooter experience, battling waves of alien robots. Your mission is to eliminate invaders, unlock progressively challenging levels, and achieve a high score. Master diverse robot movement patterns to succeed.

**Highlights:** Side-scrolling gameplay, Battle alien robots, Unlock new levels, High score challenges, Easy controls, 40 challenging levels

**Features:** macOS Compatibility

**In-app purchases:** none


### The Math Zombie

[App page](https://appshunter.io/ios/app/the-math-zombie/id1513661978)

Engage your brain with a fun math game where you defeat zombies by merging number blocks to create target sums. Improve your math skills and memory in just a few minutes a day.

**Highlights:** Merge number blocks, Solve math problems, Improve math skills, Increase memory ability, Brain training game, Timed challenges

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Alien Robot Defender free?

Alien Robot Defender is free to download, with no in-app purchases.

### Is The Math Zombie free?

The Math Zombie costs $0.99, with no in-app purchases.

### Which has better reviews, Alien Robot Defender or The Math Zombie?

Alien Robot Defender is rated higher. Alien Robot Defender averages 5.0 out of 5 from 1 ratings, while The Math Zombie averages 4.8 from 4 ratings.

### Do Alien Robot Defender or The Math Zombie have ads?

Neither Alien Robot Defender nor The Math Zombie shows ads.

### Which is updated more often, Alien Robot Defender or The Math Zombie?

Alien Robot Defender ships an update every 2 months, and The Math Zombie every 66 months. Most recently, Alien Robot Defender was updated on October 7, 2026 and The Math Zombie on September 29, 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.*