# Alien UFO vs Sticky Bubble.io

The clearest difference is rating: Alien UFO at 3.0 against Sticky Bubble.io's 2.0. Sticky Bubble.io's advantage is ads (none vs shown) and update cadence (every 2 weeks vs every 6 months). On price, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Alien UFO holds the better App Store score, 3.0 against 2.0. That said, the two scores are not equally well evidenced: Sticky Bubble.io has 27 ratings behind it against 2, so its average is the more settled of the two.

Alien UFO ships an update every 6 months, Sticky Bubble.io every 2 weeks. The most recent releases landed on October 4, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | Alien UFO | Sticky Bubble.io |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.0 (2 ratings)](https://appshunter.io/ios/app/alien-ufo/id1405010335/reviews)** | [2.0 (27 ratings)](https://appshunter.io/ios/app/sticky-bubbleio/id1415658426/reviews) |
| Number of ratings | 2 | **27** |
| Positive reviews | — | 28.6% of reviews |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 6 months | **Every 2 weeks** |
| Monetization | Ad-supported | **Free** |
| Size | 164 MB | 104 MB |
| Requires iOS | 12.0 | **7.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 9+ | 4+ |
| Developer | [Henrique Silva](https://appshunter.io/developer/492945915) | [Aurelien Venard](https://appshunter.io/developer/735154799) |

## What reviewers say

### Alien UFO

[App page](https://appshunter.io/ios/app/alien-ufo/id1405010335)

Pilot a UFO to abduct humans for fun and profit. Upgrade your ship's weapons and defenses to overcome obstacles and increase your abduction capacity. Enjoy a unique gameplay experience focused on strategic maneuvering and resource management.

**Highlights:** Tap and hold to steer UFO, Release to ascend, Upgrade weapons and defense, Neutralize hostile forces, Increase abduction capacity, Improve profits

**In-app purchases:** none


### Sticky Bubble.io

[App page](https://appshunter.io/ios/app/sticky-bubbleio/id1415658426)

Control a rolling ball, growing larger as you collect objects. Navigate through levels, avoid obstacles, and aim for the highest score. A simple yet engaging arcade experience.

**Highlights:** Roll and grow mechanics, Collect objects, Avoid obstacles, Score-based gameplay, Simple controls

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Alien UFO free?

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

### Is Sticky Bubble.io free?

Sticky Bubble.io is free to download, with no in-app purchases.

### Which has better reviews, Alien UFO or Sticky Bubble.io?

Alien UFO is rated higher. Alien UFO averages 3.0 out of 5 from 2 ratings, while Sticky Bubble.io averages 2.0 from 27 ratings.

### Do Alien UFO or Sticky Bubble.io have ads?

Alien UFO shows ads; Sticky Bubble.io does not.

### Which is updated more often, Alien UFO or Sticky Bubble.io?

Alien UFO ships an update every 6 months, and Sticky Bubble.io every 2 weeks. Most recently, Alien UFO was updated on October 4, 2026 and Sticky Bubble.io on October 10, 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.*