# Alien Robot vs Merge Universe

The clearest difference is review sentiment: Merge Universe at 47% against Alien Robot's 0%. Merge Universe also leads on rating (4.9 vs 1.5) and update cadence (every 5 weeks vs every 34 months). Alien Robot's advantage is in-app purchases (none vs 5) and ads (none vs shown). On price and device support there is nothing between them.

Both are free to download. Merge Universe sells 5 one-off in-app purchases. Alien Robot asks for nothing beyond the download.

Merge Universe holds the better App Store score, 4.9 against 1.5. That said, the two scores are not equally well evidenced: Merge Universe has 110 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 0% of Alien Robot's written reviews are positive against 47% of Merge Universe's.

Alien Robot ships an update every 34 months, Merge Universe every 5 weeks. The most recent releases landed on October 24, 2026 and October 29, 2026 respectively.

## The numbers

| Metric | Alien Robot | Merge Universe |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [1.5 (2 ratings)](https://appshunter.io/ios/app/alien-robot/id943794563/reviews) | **[4.9 (110 ratings)](https://appshunter.io/ios/app/merge-universe/id1453936993/reviews)** |
| Number of ratings | 2 | **110** |
| Positive reviews | 0.0% of reviews | **47.4% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 34 months | **Every 5 weeks** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 35 MB | 121 MB |
| Requires iOS | **10.0** | 12.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 12+ |
| Developer | [国财 胡](https://appshunter.io/developer/796061213) | [Metamoki Inc.](https://appshunter.io/developer/434433461) |

## What reviewers say

### Alien Robot

[App page](https://appshunter.io/ios/app/alien-robot/id943794563)

This is a fun, casual puzzle game with gorgeous graphics and themed levels. Players must solve challenges and pass hurdles to advance through levels as quickly as possible. It supports phones and tablets and is free to play.

**Highlights:** Casual puzzle gameplay, Themed levels, Gorgeous graphics, Challenging hurdles, Supports phones and tablets, Constantly updated levels

**Features:** macOS Compatibility

**In-app purchases:** none


### Merge Universe

[App page](https://appshunter.io/ios/app/merge-universe/id1453936993)

Embark on an epic journey from atoms to galaxies, merging objects to generate energy and unlock new creations. Utilize physics-based gameplay and strategic upgrades to expand your universe and maximize your energy production.

**Highlights:** Merge objects to create larger ones, Generate energy from bouncing objects, Create new objects from energy, Use photons to build physics Gizmos, Upgrade Skill Tree with Upgrade Coins

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

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Nano Gems Package | $1.99 | one-time |
| Micro Gems Package | $4.99 | one-time |
| Bucket of Gems | $9.99 | one-time |
| Planetary Gems Package | $24.99 | one-time |
| Stellar Gems Package | $49.99 | one-time |


## Frequently asked questions

### Is Alien Robot free?

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

### Is Merge Universe free?

Merge Universe is free to download, with in-app purchases available.

### Which has better reviews, Alien Robot or Merge Universe?

Merge Universe is rated higher. Alien Robot averages 1.5 out of 5 from 2 ratings, while Merge Universe averages 4.9 from 110 ratings.

### Do Alien Robot or Merge Universe have ads?

Merge Universe shows ads; Alien Robot does not.

### Which is updated more often, Alien Robot or Merge Universe?

Alien Robot ships an update every 34 months, and Merge Universe every 5 weeks. Most recently, Alien Robot was updated on October 24, 2026 and Merge Universe on October 29, 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.*