# Survival Kingdom TD vs Perimeter Zero

The clearest difference is in-app purchases: Survival Kingdom TD at none against Perimeter Zero's 1. Perimeter Zero's advantage is update cadence (every 2 days vs every 5 days). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Perimeter Zero sells 1 one-off in-app purchase. Survival Kingdom TD asks for nothing beyond the download.

Survival Kingdom TD ships an update every 5 days, Perimeter Zero every 2 days. The most recent releases landed on October 23, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | Survival Kingdom TD | Perimeter Zero |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.7 (6 ratings)](https://appshunter.io/ios/app/survival-kingdom-td/id6760402026/reviews)** | — |
| Number of ratings | **6** | — |
| Positive reviews | 33.3% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 5 days | **Every 2 days** |
| Monetization | Ad-supported | — |
| Size | 281 MB | 11 MB |
| Requires iOS | **15.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 9+ |
| Developer | [Hook Games Limited](https://appshunter.io/developer/1807275484) | [Hyacinthe Loua](https://appshunter.io/developer/6777148473) |

## What reviewers say

### Survival Kingdom TD

[App page](https://appshunter.io/ios/app/survival-kingdom-td/id6760402026)

Defend your castle in this endless tower defense game. Strategically build your base, train units, and upgrade defenses to survive increasingly challenging enemy waves. Manage resources to strengthen your kingdom and overcome bosses.

**Highlights:** Endless tower defense gameplay, Build and upgrade kingdom, Train ranged units, Unlock magic defenses, Manage coin and crystal resources, Fight bosses

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

**In-app purchases:** none


### 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 |


## Frequently asked questions

### Is Survival Kingdom TD free?

Survival Kingdom TD is free to download, with no in-app purchases.

### Is Perimeter Zero free?

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

### Do Survival Kingdom TD or Perimeter Zero have ads?

Both Survival Kingdom TD and Perimeter Zero show ads.

### Which is updated more often, Survival Kingdom TD or Perimeter Zero?

Survival Kingdom TD ships an update every 5 days, and Perimeter Zero every 2 days. Most recently, Survival Kingdom TD was updated on October 23, 2026 and Perimeter Zero on October 28, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*