# Tower Chase vs Idle Alien

The clearest difference is ads: Tower Chase at none against Idle Alien's shown. Tower Chase also leads on update cadence (every 2 days vs every 11 days) and iOS requirement (11.0 vs 15.6). On price, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Tower Chase ships an update every 2 days, Idle Alien every 11 days. The most recent releases landed on September 12, 2026 and July 4, 2026 respectively.

## The numbers

| Metric | Tower Chase | Idle Alien |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.5 (123 ratings)](https://appshunter.io/ios/app/idle-alien/id1374126355/reviews)** |
| Number of ratings | — | **123** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | **Every 2 days** | Every 11 days |
| Monetization | — | Ad-supported |
| Size | 23 MB | 295 MB |
| Requires iOS | **11.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Icey AB](https://appshunter.io/developer/842679407) | [Viet Game Development Corporation](https://appshunter.io/developer/945300832) |

## What reviewers say

### Tower Chase

[App page](https://appshunter.io/ios/app/tower-chase/id1161125392)

**Features:** macOS Compatibility

**In-app purchases:** none


### Idle Alien

[App page](https://appshunter.io/ios/app/idle-alien/id1374126355)

Engage in a hyper-casual space war by tapping to destroy hostile spaceships. Upgrade your alien heroes to increase damage and unlock new abilities. Enjoy a stress-relieving, offline gaming experience.

**Highlights:** Tap to attack spaceships, Upgrade alien heroes, Boost damage and gold, Offline gameplay, Stress-relieving mechanics, Unlock new aliens

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Tower Chase free?

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

### Is Idle Alien free?

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

### Do Tower Chase or Idle Alien have ads?

Idle Alien shows ads; Tower Chase does not.

### Which is updated more often, Tower Chase or Idle Alien?

Tower Chase ships an update every 2 days, and Idle Alien every 11 days. Most recently, Tower Chase was updated on September 12, 2026 and Idle Alien on July 4, 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.*