# Math Vs Undead vs RichEnglish

The clearest difference is review sentiment: RichEnglish at 100% against Math Vs Undead's 48%. RichEnglish also leads on ads (none vs shown). Math Vs Undead's advantage is update cadence (every 6 months vs every 15 months) and iOS requirement (13.0 vs 17.2). On price, in-app purchases, monetization model and device support there is nothing between them.

Both are free to download. Math Vs Undead sells 1 one-off in-app purchase and RichEnglish sells 4 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

Math Vs Undead ships an update every 6 months, RichEnglish every 15 months. The most recent releases landed on October 23, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | Math Vs Undead | RichEnglish |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.3 (148 ratings)](https://appshunter.io/ios/app/math-vs-undead-math-game/id687283022/reviews)** | — |
| Number of ratings | **148** | — |
| Positive reviews | 48.1% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | **Every 6 months** | Every 15 months |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 133 MB | 4 MB |
| Requires iOS | **13.0** | 17.2 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 9+ | 9+ |
| Developer | [Peaksel](https://appshunter.io/developer/618105376) | [Galina Tereshchenko](https://appshunter.io/developer/1286571004) |

## 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 |


### RichEnglish

[App page](https://appshunter.io/ios/app/richenglish/id1286571005)

Expand your English vocabulary by playing fun word games. This app generates an unlimited number of crosswords based on synonyms and definitions. Hints are available to help you discover new words and phrases.

**Highlights:** Unlimited crossword generation, Vocabulary expansion, Synonym-based word finding, Word definitions and explanations, Hint system with gold coins, New puzzle generation

**Features:** macOS Compatibility

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 15 hints | $0.99 | one-time |
| RichEnglish Premium | $1.99 | one-time |
| 35 hints | $1.99 | one-time |
| 60 hints | $2.99 | one-time |


## Frequently asked questions

### Is Math Vs Undead free?

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

### Is RichEnglish free?

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

### Do Math Vs Undead or RichEnglish have ads?

Math Vs Undead shows ads; RichEnglish does not.

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

Math Vs Undead ships an update every 6 months, and RichEnglish every 15 months. Most recently, Math Vs Undead was updated on October 23, 2026 and RichEnglish on October 6, 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.*