# Math Vs Undead vs Flip Jacks

The clearest difference is in-app purchases: Flip Jacks at none against Math Vs Undead's 1. Flip Jacks also leads on ads (none vs shown). Math Vs Undead's advantage is update cadence (every 6 months vs every 18 months). On price, device support and iOS requirement there is nothing between them.

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

Math Vs Undead ships an update every 6 months, Flip Jacks every 18 months. The most recent releases landed on October 12, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | Math Vs Undead | Flip Jacks |
| --- | --- | --- |
| 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 | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Every 6 months** | Every 18 months |
| Monetization | Free with in-app purchases | — |
| Size | 133 MB | 47 MB |
| Requires iOS | 13.0 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 9+ | 4+ |
| Developer | [Peaksel](https://appshunter.io/developer/618105376) | [Scott Doxey](https://appshunter.io/developer/1742471388) |

## 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 |


### Flip Jacks

[App page](https://appshunter.io/ios/app/flip-jacks/id6499108375)

**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 Flip Jacks free?

Flip Jacks is free to download, with no in-app purchases.

### Do Math Vs Undead or Flip Jacks have ads?

Math Vs Undead shows ads; Flip Jacks does not.

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

Math Vs Undead ships an update every 6 months, and Flip Jacks every 18 months. Most recently, Math Vs Undead was updated on October 12, 2026 and Flip Jacks on October 2, 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.*