# Idle Alien vs US Tractor 3D Simulator Games

The clearest difference is in-app purchases: Idle Alien at none against US Tractor 3D Simulator Games's 6. Idle Alien also leads on update cadence (every 11 days vs every 76 months). US Tractor 3D Simulator Games's advantage is ads (none vs shown) and iOS requirement (13.0 vs 15.6). On price and device support there is nothing between them.

Both are free to download. US Tractor 3D Simulator Games sells 6 one-off in-app purchases. Idle Alien asks for nothing beyond the download.

Idle Alien ships an update every 11 days, US Tractor 3D Simulator Games every 76 months. The most recent releases landed on October 24, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | Idle Alien | US Tractor 3D Simulator Games |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (124 ratings)](https://appshunter.io/ios/app/idle-alien/id1374126355/reviews)** | — |
| Number of ratings | **124** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | **Every 11 days** | Every 76 months |
| Monetization | Ad-supported | — |
| Size | 295 MB | 179 MB |
| Requires iOS | 15.6 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 17+ |
| Developer | [vmoga](https://appshunter.io/developer/945300832) | [Yasir Majeed](https://appshunter.io/developer/1326144589) |

## What reviewers say

### 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


### US Tractor 3D Simulator Games

[App page](https://appshunter.io/ios/app/us-tractor-3d-simulator-games/id1512350992)

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

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 300coin | $1.99 | one-time |
| 500coin | $2.99 | one-time |
| 1000coin | $4.99 | one-time |
| 3000coin | $7.99 | one-time |
| 5000coin | $9.99 | one-time |
| 10000coin | $14.99 | one-time |


## Frequently asked questions

### Is Idle Alien free?

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

### Is US Tractor 3D Simulator Games free?

US Tractor 3D Simulator Games is free to download, with in-app purchases available.

### Do Idle Alien or US Tractor 3D Simulator Games have ads?

Idle Alien shows ads; US Tractor 3D Simulator Games does not.

### Which is updated more often, Idle Alien or US Tractor 3D Simulator Games?

Idle Alien ships an update every 11 days, and US Tractor 3D Simulator Games every 76 months. Most recently, Idle Alien was updated on October 24, 2026 and US Tractor 3D Simulator Games on October 3, 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.*