# Idle Anomaly vs Alien Raid

The clearest difference is rating: Idle Anomaly at 4.7 against Alien Raid's 3.6. Idle Anomaly also leads on review sentiment (38% vs 22%) and ratings volume (364 vs 30). Alien Raid's advantage is in-app purchases (none vs 15). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Idle Anomaly sells 15 one-off in-app purchases. Alien Raid asks for nothing beyond the download.

Idle Anomaly holds the better App Store score, 4.7 against 3.6. That said, the two scores are not equally well evidenced: Idle Anomaly has 364 ratings behind it against 30, so its average is the more settled of the two. Written reviews point the same way: 38% of Idle Anomaly's written reviews are positive against 22% of Alien Raid's.

Idle Anomaly ships an update every 5 weeks, Alien Raid every 2 months. The most recent releases landed on September 16, 2026 and September 21, 2026 respectively.

## The numbers

| Metric | Idle Anomaly | Alien Raid |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (364 ratings)](https://appshunter.io/ios/app/idle-anomaly-alien-control/id1630927796/reviews)** | [3.6 (30 ratings)](https://appshunter.io/ios/app/alien-raid-monster-evolution/id6446621231/reviews) |
| Number of ratings | **364** | 30 |
| Positive reviews | **37.9% of reviews** | 22.2% of reviews |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Update frequency | **Every 5 weeks** | Every 2 months |
| Monetization | Free with in-app purchases | **Ad-supported** |
| Size | 249 MB | 270 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 9+ | 12+ |
| Developer | [Hot Siberians](https://appshunter.io/developer/1582606391) | [MAD PIXEL](https://appshunter.io/developer/1581972745) |

## What reviewers say

### Idle Anomaly

[App page](https://appshunter.io/ios/app/idle-anomaly-alien-control/id1630927796)

Build a research station to uncover the secrets of a mysterious alien Obelisk. Manage employees, defend your base from alien invaders, and upgrade heroes. Progress continues even when you're offline.

**Highlights:** Build and upgrade research station, Manage employees and monitor health, Defend base from alien attacks, Upgrade space heroes, Study UFOs and collect resources, Offline progress and idle earnings

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

**In-app purchases (15)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 80 Gems | $0.99 | one-time |
| Helicopter. | $4.99 | one-time |
| 500 Gems | $4.99 | one-time |
| Researcher | $4.99 | one-time |
| Johnny Goldhand | $4.99 | one-time |
| Beginner's Pack | $6.99 | one-time |
| Starter pack | $9.99 | one-time |
| Researcher | $9.99 | one-time |
| 1200 Gems | $9.99 | one-time |
| Dr. Massachusetts | $10.99 | one-time |
| No ads | $13.99 | one-time |
| Professional's Pack | $13.99 | one-time |
| Neat Pack | $19.99 | one-time |
| 2500 Gems | $24.99 | one-time |
| All Inclusive Pack | $35.99 | one-time |

**What reviewers like**

- 👍 Good game overall
- 🎨 Great design scheme
- ✨ Items change looks
- 🧘 Calming gameplay
- 💡 Interesting and fun gameplay

**What reviewers complain about**

- 📉 New update makes it dip
- 💸 Hero upgrades too expensive
- 🐛 Ads still present after purchase
- 💸 In-game purchases not received
- ⏳ Purchases don't take effect

**Reported bugs**

- Reset all data
- No ads upgrade not working
- Beginner pack not received
- In-app purchases not credited
- Game keeps locking up

**Requested features**

- Fix game issues or refund
- Add more content to the game
- Improve developer communication for future plans


### Alien Raid

[App page](https://appshunter.io/ios/app/alien-raid-monster-evolution/id6446621231)

Lead an alien invasion to conquer Earth by building and evolving a monster army. Raid human bases, gather resources, and upgrade your lab and creatures for ultimate domination in this sci-fi strategy game.

**Highlights:** Create and upgrade monsters, Tower defense meets alien strategy, Upgrade lab and workers, Arcade action and idle gameplay, Conquer iconic locations, Epic boss battles

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

**In-app purchases:** none


## Frequently asked questions

### Is Idle Anomaly free?

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

### Is Alien Raid free?

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

### Which has better reviews, Idle Anomaly or Alien Raid?

Idle Anomaly is rated higher. Idle Anomaly averages 4.7 out of 5 from 364 ratings, while Alien Raid averages 3.6 from 30 ratings.

### Do Idle Anomaly or Alien Raid have ads?

Both Idle Anomaly and Alien Raid show ads.

### Which is updated more often, Idle Anomaly or Alien Raid?

Idle Anomaly ships an update every 5 weeks, and Alien Raid every 2 months. Most recently, Idle Anomaly was updated on September 16, 2026 and Alien Raid on September 21, 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.*