# Alien Sort vs Under Crush

The clearest difference is review sentiment: Under Crush at 100% against Alien Sort's 50%. Under Crush also leads on rating (5.0 vs 3.0) and ratings volume (6 vs 1). Alien Sort's advantage is in-app purchases (none vs 9). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Under Crush sells 9 one-off in-app purchases. Alien Sort asks for nothing beyond the download.

Under Crush holds the better App Store score, 5.0 against 3.0. That said, the two scores are not equally well evidenced: Under Crush has 6 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 50% of Alien Sort's written reviews are positive against 100% of Under Crush's.

Alien Sort ships an update every 9 days, Under Crush every 2 weeks. The most recent releases landed on June 6, 2026 and June 9, 2026 respectively.

## The numbers

| Metric | Alien Sort | Under Crush |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.0 (1 ratings)](https://appshunter.io/ios/app/alien-sort/id6749637560/reviews) | **[5.0 (6 ratings)](https://appshunter.io/ios/app/under-crush/id6749669156/reviews)** |
| Number of ratings | 1 | **6** |
| Positive reviews | 50.0% of reviews | **100.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | **Every 9 days** | Every 2 weeks |
| Monetization | **Ad-supported** | Free with in-app purchases |
| Size | 117 MB | 134 MB |
| Requires iOS | **12.0** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | 4+ |
| Developer | [Fiedosieiev Nikita](https://appshunter.io/developer/1744576878) | [Evocentron LLC](https://appshunter.io/developer/1820074067) |

## What reviewers say

### Alien Sort

[App page](https://appshunter.io/ios/app/alien-sort/id6749637560)

Guide UFOs to sort aliens into their correct destinations. Avoid overfilling the central dock to prevent losing. Enjoy diverse levels and engaging gameplay with numerous features.

**Highlights:** UFO-based alien sorting, Avoid overfilling dock mechanic, Variety of levels, Numerous features, Interesting gameplay

**Features:** macOS Compatibility

**In-app purchases:** none


### Under Crush

[App page](https://appshunter.io/ios/app/under-crush/id6749669156)

A physics-based crane game that challenges your timing and strategy. Swing, drop, and smash obstacles to collect keys and earn gems. Unlock powerful abilities and compete on global leaderboards.

**Highlights:** Physics-based crane gameplay, Strategic obstacle smashing, Key collection for progression, Unlockable abilities (Thunderstorm, Extra Time, Super Load), Dynamic level challenges (e.g., earthquakes), Global leaderboard competition

**Features:** macOS Compatibility

**In-app purchases (9)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 100 Gems | $1.99 | one-time |
| 200 Gems | $2.99 | one-time |
| Gem No Ads | $4.99 | one-time |
| 400 Gems | $5.99 | one-time |
| 800 Gems | $9.99 | one-time |
| 1000 Gems | $12.99 | one-time |
| 1500 Gems | $15.99 | one-time |
| 2000 Gems | $19.99 | one-time |
| 5000 Gems | $39.99 | one-time |


## Frequently asked questions

### Is Alien Sort free?

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

### Is Under Crush free?

Under Crush is free to download, with in-app purchases available.

### Which has better reviews, Alien Sort or Under Crush?

Under Crush is rated higher. Alien Sort averages 3.0 out of 5 from 1 ratings, while Under Crush averages 5.0 from 6 ratings.

### Do Alien Sort or Under Crush have ads?

Both Alien Sort and Under Crush show ads.

### Which is updated more often, Alien Sort or Under Crush?

Alien Sort ships an update every 9 days, and Under Crush every 2 weeks. Most recently, Alien Sort was updated on June 6, 2026 and Under Crush on June 9, 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.*