# Zombie Tower Idle vs Cats Merge Evolution

The clearest difference is in-app purchases: Cats Merge Evolution at none against Zombie Tower Idle's 1. Zombie Tower Idle's advantage is update cadence (every 9 days vs every 13 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Zombie Tower Idle sells 1 one-off in-app purchase. Cats Merge Evolution asks for nothing beyond the download.

Zombie Tower Idle ships an update every 9 days, Cats Merge Evolution every 13 months. The most recent releases landed on October 24, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | Zombie Tower Idle | Cats Merge Evolution |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (205 ratings)](https://appshunter.io/ios/app/zombie-tower-idle/id1477027235/reviews)** | — |
| Number of ratings | **205** | — |
| Positive reviews | 12.5% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Update frequency | **Every 9 days** | Every 13 months |
| Monetization | Free with in-app purchases | — |
| Size | 59 MB | 76 MB |
| Requires iOS | 13.0 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | 4+ |
| Developer | [洁 任](https://appshunter.io/developer/368923700) | [Atta Mohi Ud Din](https://appshunter.io/developer/1653234972) |

## What reviewers say

### Zombie Tower Idle

[App page](https://appshunter.io/ios/app/zombie-tower-idle/id1477027235)

Engage in a zombie-fighting adventure where you tap to shoot and earn money to upgrade weapons. Build the strongest defenses to withstand endless zombie waves. This idle game offers constant action and strategic upgrades.

**Highlights:** Tap to shoot zombies, Earn money to buy weapons, Upgrade defenses, Resist zombie army, Play anywhere, anytime

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove banner ads | $2.99 | one-time |


### Cats Merge Evolution

[App page](https://appshunter.io/ios/app/cats-merge-evolution/id6444314086)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Zombie Tower Idle free?

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

### Is Cats Merge Evolution free?

Cats Merge Evolution is free to download, with no in-app purchases.

### Do Zombie Tower Idle or Cats Merge Evolution have ads?

Both Zombie Tower Idle and Cats Merge Evolution show ads.

### Which is updated more often, Zombie Tower Idle or Cats Merge Evolution?

Zombie Tower Idle ships an update every 9 days, and Cats Merge Evolution every 13 months. Most recently, Zombie Tower Idle was updated on October 24, 2026 and Cats Merge Evolution on October 14, 2026.

---

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