# Perimeter Zero vs World War X

Perimeter Zero and World War X are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Both are free to download. Perimeter Zero sells 1 one-off in-app purchase and World War X sells 10 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

Both ship on a similar rhythm, roughly every 2 days. The most recent releases landed on October 28, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Perimeter Zero | World War X |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 2 days | Every 2 days |
| Size | 11 MB | 258 MB |
| Requires iOS | 16.0 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 9+ | 12+ |
| Developer | [Hyacinthe Loua](https://appshunter.io/developer/6777148473) | [Daniel Chao](https://appshunter.io/developer/6793347632) |

## What reviewers say

### Perimeter Zero

[App page](https://appshunter.io/ios/app/perimeter-zero/id6786819667)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| PerimeterZero Premium | $2.99 | one-time |


### World War X

[App page](https://appshunter.io/ios/app/world-war-x/id6793347630)

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

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Epic Level-Up (Lv 6) | $4.99 | one-time |
| Monthly Pass | $4.99 | one-time |
| Legendary Path | $7.99 | one-time |
| Epic Level-Up (Lv 8) | $8.99 | one-time |
| 5 Guaranteed Epics | $9.99 | one-time |
| Legendary Level-Up (Lv 10) | $14.99 | one-time |
| Guaranteed Legendary | $17.99 | one-time |
| Legendary Level-Up (Lv 11) | $19.99 | one-time |
| Legendary Level-Up (Lv 12) | $29.99 | one-time |
| Legendary Level-Up (Lv 13) | $39.99 | one-time |


## Frequently asked questions

### Is Perimeter Zero free?

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

### Is World War X free?

World War X is free to download, with in-app purchases available.

### Do Perimeter Zero or World War X have ads?

Both Perimeter Zero and World War X show ads.

### Which is updated more often, Perimeter Zero or World War X?

Perimeter Zero ships an update every 2 days, and World War X every 2 days. Most recently, Perimeter Zero was updated on October 28, 2026 and World War X 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.*