# Zombie Attack vs GapTap

The clearest difference is in-app purchases: GapTap at none against Zombie Attack's 3. GapTap also leads on update cadence (every 9 days vs every 3 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Zombie Attack sells 3 one-off in-app purchases. GapTap asks for nothing beyond the download.

Zombie Attack ships an update every 3 months, GapTap every 9 days. The most recent releases landed on October 24, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Zombie Attack | GapTap |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/zombie-attack-train-simulator/id6450736319/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Update frequency | Every 3 months | **Every 9 days** |
| Size | 380 MB | 7 MB |
| Requires iOS | **15.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [TERRANOVA INTERACTIVE LLC](https://appshunter.io/developer/6799684947) | [NEBIL TOLGA UZUNOGLU](https://appshunter.io/developer/1863181139) |

## What reviewers say

### Zombie Attack

[App page](https://appshunter.io/ios/app/zombie-attack-train-simulator/id6450736319)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock All trains | $59.99 | one-time |
| Unlock All Levels | $59.99 | one-time |
| Unlock Full Game | $99.99 | one-time |


### GapTap

[App page](https://appshunter.io/ios/app/gaptap-oh-snap/id6758920722)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Zombie Attack free?

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

### Is GapTap free?

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

### Do Zombie Attack or GapTap have ads?

Both Zombie Attack and GapTap show ads.

### Which is updated more often, Zombie Attack or GapTap?

Zombie Attack ships an update every 3 months, and GapTap every 9 days. Most recently, Zombie Attack was updated on October 24, 2026 and GapTap on October 25, 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.*