# Stretch Robot vs X

The clearest difference is in-app purchases: X at none against Stretch Robot's 1. X also leads on update cadence (every 2 weeks vs every 4 months) and rating (5.0 vs 4.7). Stretch Robot's advantage is ratings volume (124 vs 3). On price, ads and device support there is nothing between them.

Both are free to download. Stretch Robot sells 1 one-off in-app purchase. X asks for nothing beyond the download.

X holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: Stretch Robot has 124 ratings behind it against 3, so its average is the more settled of the two.

Stretch Robot ships an update every 4 months, X every 2 weeks. The most recent releases landed on September 21, 2026 and July 31, 2026 respectively.

## The numbers

| Metric | Stretch Robot | X |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.7 (124 ratings)](https://appshunter.io/ios/app/stretch-robot-physics-puzzle/id6473294292/reviews) | **[5.0 (3 ratings)](https://appshunter.io/ios/app/x-out-alien-outbreak/id6503699630/reviews)** |
| Number of ratings | **124** | 3 |
| Positive reviews | 57.1% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Update frequency | Every 4 months | **Every 2 weeks** |
| Monetization | Free with in-app purchases | **Ad-supported** |
| Size | 185 MB | 149 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 9+ | 9+ |
| Developer | [Lunapp, TOO](https://appshunter.io/developer/1669287025) | [PSYCRAFT GmbH](https://appshunter.io/developer/1441576670) |

## What reviewers say

### Stretch Robot

[App page](https://appshunter.io/ios/app/stretch-robot-physics-puzzle/id6473294292)

Control a robot with extendable arms to solve physics-based puzzles. Stretch, grab, and swing to overcome obstacles like spikes and gaps using smart thinking and elastic mechanics. Enjoy handcrafted levels with a casual pace, perfect for quick, engaging brain teasers.

**Highlights:** Physics-based puzzle gameplay, Stretch mechanics, Handcrafted levels, Logic challenges, Casual pace, Intuitive physics

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $0.99 | one-time |


### X

[App page](https://appshunter.io/ios/app/x-out-alien-outbreak/id6503699630)

Escape a secret laboratory as a powerful alien in this fast-paced jump'n'run game. Unleash supernatural upgrades and race against time to reach the top. Can you break free before the humans recapture you?

**Highlights:** Continuous 1-100 level challenge, Supernatural alien upgrades, Escape the laboratory, Tilt controls for movement, Tap to jump or grab

**In-app purchases:** none


## Frequently asked questions

### Is Stretch Robot free?

Stretch Robot is free to download, with in-app purchases available.

### Is X free?

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

### Which has better reviews, Stretch Robot or X?

X is rated higher. Stretch Robot averages 4.7 out of 5 from 124 ratings, while X averages 5.0 from 3 ratings.

### Do Stretch Robot or X have ads?

Both Stretch Robot and X show ads.

### Which is updated more often, Stretch Robot or X?

Stretch Robot ships an update every 4 months, and X every 2 weeks. Most recently, Stretch Robot was updated on September 21, 2026 and X on July 31, 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.*