# The Math Zombie vs Letterfull

The clearest difference is review sentiment: The Math Zombie at 100% against Letterfull's 50%. The Math Zombie also leads on price ($0.99 vs $2.99) and ratings volume (4 vs 1). Letterfull's advantage is update cadence (every 6 months vs every 66 months) and rating (5.0 vs 4.8). On ads, in-app purchases, monetization model and device support there is nothing between them.

The Math Zombie costs $0.99 and Letterfull $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Letterfull holds the better App Store score, 5.0 against 4.8. Both are backed by a comparable volume of ratings — 4 and 1 respectively. Written reviews complicate that: 100% of The Math Zombie's written reviews are positive against 50% of Letterfull's, so the app with the better star average is not the one people write more warmly about.

The Math Zombie ships an update every 66 months, Letterfull every 6 months. The most recent releases landed on October 24, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | The Math Zombie | Letterfull |
| --- | --- | --- |
| Price | **$0.99** | $2.99 |
| Rating | [4.8 (4 ratings)](https://appshunter.io/ios/app/the-math-zombie/id1513661978/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/letterfull/id1639843494/reviews)** |
| Number of ratings | **4** | 1 |
| Positive reviews | **100.0% of reviews** | 50.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 66 months | **Every 6 months** |
| Monetization | Paid | Paid |
| Best chart rank | — | **#181** |
| Size | 47 MB | 10 MB |
| Requires iOS | **13.2** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [MM&F Software LLC](https://appshunter.io/developer/1498948648) | [Oriol Gomez](https://appshunter.io/developer/1528856183) |

## What reviewers say

### 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


### Letterfull

[App page](https://appshunter.io/ios/app/letterfull/id1639843494)

**Currently charting:** #181 Top Paid · Word (US App Store)

A word puzzle game where you form words by touching letters on a grid. Avoid filling the board as letters appear faster with each level. Supports multiple languages and offers accessibility options.

**Highlights:** Form words by touching letters, Avoid filling the game grid, Letters appear faster each level, Supports English, Spanish, Catalan, Italian, Accessibility options for VoiceOver, Minimum 3-letter words required

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is The Math Zombie free?

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

### Is Letterfull free?

Letterfull costs $2.99, with no in-app purchases.

### Which has better reviews, The Math Zombie or Letterfull?

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

### Do The Math Zombie or Letterfull have ads?

Neither The Math Zombie nor Letterfull shows ads.

### Which is updated more often, The Math Zombie or Letterfull?

The Math Zombie ships an update every 66 months, and Letterfull every 6 months. Most recently, The Math Zombie was updated on October 24, 2026 and Letterfull on October 30, 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.*