# Math Vs Undead vs Brain Drain

The clearest difference is review sentiment: Brain Drain at 100% against Math Vs Undead's 48%. Brain Drain also leads on rating (5.0 vs 4.3) and in-app purchases (none vs 1). Math Vs Undead's advantage is ratings volume (148 vs 2) and update cadence (every 6 months vs every 28 months). On price, ads and device support there is nothing between them.

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

Brain Drain holds the better App Store score, 5.0 against 4.3. That said, the two scores are not equally well evidenced: Math Vs Undead has 148 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 48% of Math Vs Undead's written reviews are positive against 100% of Brain Drain's.

Math Vs Undead ships an update every 6 months, Brain Drain every 28 months. The most recent releases landed on August 28, 2026 and September 24, 2026 respectively.

## The numbers

| Metric | Math Vs Undead | Brain Drain |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.3 (148 ratings)](https://appshunter.io/ios/app/math-vs-undead-math-game/id687283022/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/brain-drain-a-quick-math-game/id1477237865/reviews)** |
| Number of ratings | **148** | 2 |
| Positive reviews | 48.1% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Update frequency | **Every 6 months** | Every 28 months |
| Monetization | Free with in-app purchases | **Ad-supported** |
| Size | 133 MB | 92 MB |
| Requires iOS | 13.0 | **10.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 9+ | 4+ |
| Developer | [Peaksel](https://appshunter.io/developer/618105376) | [Back Alley Technology](https://appshunter.io/developer/1477237864) |

## What reviewers say

### 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 |


### Brain Drain

[App page](https://appshunter.io/ios/app/brain-drain-a-quick-math-game/id1477237865)

Test your reflexes and quick math skills in this addictive brain game. Compete against friends and players worldwide on the leaderboard with challenging puzzles that boost IQ and memory.

**Highlights:** Quick calculations, Varied math sums (addition, subtraction, multiplication), Competitive global leaderboard, Fast reaction-based gameplay, Nuke power-up for challenging sums, Brain training for IQ and memory

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Math Vs Undead free?

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

### Is Brain Drain free?

Brain Drain is free to download, with no in-app purchases.

### Which has better reviews, Math Vs Undead or Brain Drain?

Brain Drain is rated higher. Math Vs Undead averages 4.3 out of 5 from 148 ratings, while Brain Drain averages 5.0 from 2 ratings.

### Do Math Vs Undead or Brain Drain have ads?

Both Math Vs Undead and Brain Drain show ads.

### Which is updated more often, Math Vs Undead or Brain Drain?

Math Vs Undead ships an update every 6 months, and Brain Drain every 28 months. Most recently, Math Vs Undead was updated on August 28, 2026 and Brain Drain on September 24, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*