# Idle Alien vs Slime Weapon Master

The clearest difference is review sentiment: Idle Alien at 100% against Slime Weapon Master's 55%. Idle Alien also leads on in-app purchases (none vs 11) and update cadence (every 11 days vs every 2 months). Slime Weapon Master's advantage is rating (4.8 vs 4.5) and ratings volume (5.5K vs 123). On price, ads and device support there is nothing between them.

Both are free to download. Slime Weapon Master sells 11 one-off in-app purchases. Idle Alien asks for nothing beyond the download.

Slime Weapon Master holds the better App Store score, 4.8 against 4.5. That said, the two scores are not equally well evidenced: Slime Weapon Master has 5.5K ratings behind it against 123, so its average is the more settled of the two. Written reviews complicate that: 100% of Idle Alien's written reviews are positive against 55% of Slime Weapon Master's, so the app with the better star average is not the one people write more warmly about.

Idle Alien ships an update every 11 days, Slime Weapon Master every 2 months. The most recent releases landed on July 4, 2026 and September 24, 2026 respectively.

## The numbers

| Metric | Idle Alien | Slime Weapon Master |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.5 (123 ratings)](https://appshunter.io/ios/app/idle-alien/id1374126355/reviews) | **[4.8 (5.5K ratings)](https://appshunter.io/ios/app/slime-weapon-master/id6464454560/reviews)** |
| Number of ratings | 123 | **5.5K** |
| Positive reviews | **100.0% of reviews** | 54.5% of reviews |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | **Every 11 days** | Every 2 months |
| Monetization | **Ad-supported** | Free with in-app purchases |
| Size | 295 MB | 172 MB |
| Requires iOS | 15.6 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 12+ |
| Developer | [Viet Game Development Corporation](https://appshunter.io/developer/945300832) | [Solid Games](https://appshunter.io/developer/1625798412) |

## 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


### Slime Weapon Master

[App page](https://appshunter.io/ios/app/slime-weapon-master/id6464454560)

Build and sell weapons in your own factory. Upgrade your production lines to forge higher-grade weapons faster and earn more gold. Expand your operations to maximize profits and fill your treasure chests.

**Highlights:** Build weapons, Sell weapons, Upgrade production lines, Earn gold coins, Open new production lines, Increase weapon grade

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

**In-app purchases (11)**

| Purchase | Price | Billing |
| --- | --- | --- |
| gem1 | $1.99 | one-time |
| store_prop3 | $2.99 | one-time |
| store_prop4 | $2.99 | one-time |
| gem2 | $4.99 | one-time |
| noads1 | $4.99 | one-time |
| store_bundle1 | $4.99 | one-time |
| gem3 | $9.99 | one-time |
| noad2 | $9.99 | one-time |
| gem4 | $19.99 | one-time |
| gem5 | $49.99 | one-time |
| gem6 | $99.99 | one-time |

**What reviewers like**

- 👍 Fun and addictive gameplay
- 🚀 No WiFi required
- 🎨 Great graphics and animations

**What reviewers complain about**

- 🔍 Excessive and intrusive ads
- 💰 Monetization issues (forced ads, expensive ad removal)
- 🐛 Bugs and glitches (e.g., battlefield mode not working)

**Reported bugs**

- Game crashes and freezes
- Battlefield mode not functioning properly
- Issues with ad playback and rewards

**Requested features**

- More events and content updates
- Faster slime and weapon crafting
- Improved progression system


## Frequently asked questions

### Is Idle Alien free?

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

### Is Slime Weapon Master free?

Slime Weapon Master is free to download, with in-app purchases available.

### Which has better reviews, Idle Alien or Slime Weapon Master?

Slime Weapon Master is rated higher. Idle Alien averages 4.5 out of 5 from 123 ratings, while Slime Weapon Master averages 4.8 from 5.5K ratings.

### Do Idle Alien or Slime Weapon Master have ads?

Both Idle Alien and Slime Weapon Master show ads.

### Which is updated more often, Idle Alien or Slime Weapon Master?

Idle Alien ships an update every 11 days, and Slime Weapon Master every 2 months. Most recently, Idle Alien was updated on July 4, 2026 and Slime Weapon Master on September 24, 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.*