The Math Zombie vs Letterfull
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
The Math Zombie
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.
- Merge number blocks
- Solve math problems
- Improve math skills
- Increase memory ability
- Brain training game
- Timed challenges
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Are you ready to defeat the Math Zombies? Think fast, challenge yourself and exercise your brain with this game for people of all ages. Improve math skills and increase your memory ability. Tune-up your brain with this fun, engaging game by playing only a few minutes a day. Math Zombie is a huge success, a lot of people are having fun while improving their Math skills. Math Zombie was selected as Apple Staff's Favorite during the week of Christmas 2008. The goal of this math game is simple: You need to defeat the Math Zombies by creating the numbers they are asking. To create numbers, drag two number blocks to merge their values. If you get the right number, you will attack the zombie. You will must be quick, because if the timer goes out, the Zombie will attack you. Suggestions, reviews, and ratings are greatly appreciated.
Letterfull
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.
- 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
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Have you always wanted to play a game where you wish you could make up your own words but you can't? welcome to Letterfull! The game where you must manage to form words without filling the five by five game grid. The mechanic of the game is quite simple. The game board consists of five rows of five columns, which may contain letters that appear faster every level. With the letters that appear, you must form words by touching the letters with your finger. When you touch a letter, it will move to the bottom of the board, after the separator, i.e. the word you are trying to form. To submit the word and check if it is correct, (must have at least 3 letters and be in the dictionary of the chosen language -more on that later), you can tap the submit button (or double-tap with 2 fingers if you use VoiceOver). If you want to send all the letters back to the end of the game board, either because you made a mistake or because you saw another letter that can form a better word, you can tap the move all button or, if you use VoiceOver, do the back gesture (2 finger scrub). You can also tap one letter of the letters you have in your word to send it back to the end of the game board. The game is available in English, Spanish, Catalan and Italian, and changing the language does not involve any change in the game interface, only in the dictionary used to check if the words are correct. For people learning English, Catalan or another language available in the game, it can be very useful.
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | The Math Zombie | Letterfull |
|---|---|---|
| Price | $0.99 — better | $2.99 |
| Rating | 4.8 (4 ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 100.0% of reviews — better | 50.0% of reviews |
| Number of ratings | 4 — better | 1 |
| Update frequency | Every 66 months | Every 6 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Best chart rank | — | #183 — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 13.2 — better | 15.0 |
| Further details — not scored | ||
| Size | 47 MB | 10 MB |
| Age rating | 4+ | 4+ |
| Developer | MM&F Software LLC | Oriol Gomez |
Customer experience
The Math Zombie
Letterfull
In-app purchases
The Math Zombie
No in-app purchases
Letterfull
No in-app purchases









