# uu vs STACX

The clearest difference is rating: uu at 3.7 against STACX's 3.0. uu also leads on ratings volume (202 vs 2). STACX's advantage is in-app purchases (none vs 8) and ads (none vs shown). On price and device support there is nothing between them.

Both are free to download. uu sells 8 in-app purchases, starting at $1.99 per month. STACX asks for nothing beyond the download.

uu holds the better App Store score, 3.7 against 3.0. That said, the two scores are not equally well evidenced: uu has 202 ratings behind it against 2, so its average is the more settled of the two.

## The numbers

| Metric | uu | STACX |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.7 (202 ratings)](https://appshunter.io/ios/app/uu/id927819165/reviews)** | [3.0 (2 ratings)](https://appshunter.io/ios/app/stacx/id1095219252/reviews) |
| Number of ratings | **202** | 2 |
| Positive reviews | 47.1% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 2 months | — |
| Monetization | Free with in-app purchases | **Free** |
| Size | 132 MB | 59 MB |
| Requires iOS | 15.0 | **6.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [General Adaptive Apps Pty Ltd](https://appshunter.io/developer/937589555) | [Eggyothin Pila](https://appshunter.io/developer/808692522) |

## What reviewers say

### uu

[App page](https://appshunter.io/ios/app/uu/id927819165)

This is a minimalist puzzle game with 200 challenging levels, offering a fun and intricate experience. It features a level selection system, the ability to replay past levels, and options to skip difficult stages or unlock all levels.

**Highlights:** 200 challenging levels, Leaderboards and medals, Replay past levels, Skip difficult levels, Unlock all levels

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

**In-app purchases (8)**

| Purchase | Price | Billing |
| --- | --- | --- |
| uu Legend | $1.99 | per month |
| uu Legend | $19.99 | per year |
| Skip uu Level | $0.49 | one-time |
| Skip 3 Levels | $1.29 | one-time |
| Skip 5 Levels | $1.99 | one-time |
| Remove uu Ads | $5.99 | one-time |
| Unlock All of uu | $7.99 | one-time |
| Unlock all + remove ads | $10.99 | one-time |

**What reviewers like**

- 🎮 Great offline time sink
- 👍 Addictive and challenging
- 🎯 Levels 1-4 passed with ease

**What reviewers complain about**

- 🔁 Level 5 impossible
- 🔁 Level 155 freezes
- 🐛 Occasional glitches and bugs

**Reported bugs**

- Dots spawn inside central circle on iPhone
- Center stops spinning before pins run out on level 155
- Dots migrate to inside of circle on level 142

**Requested features**

- Option to skip difficult levels
- More color and music
- Level progress indicators


### STACX

[App page](https://appshunter.io/ios/app/stacx/id1095219252)

A fun and relaxing game where players stack blocks as high as possible. Compete with friends for the best scores using simple, beautiful graphics.

**Highlights:** Stack blocks high, Relaxing gameplay, Simple graphics, Competitive scoring, Beat friends' scores

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is uu free?

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

### Is STACX free?

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

### Which has better reviews, uu or STACX?

uu is rated higher. uu averages 3.7 out of 5 from 202 ratings, while STACX averages 3.0 from 2 ratings.

### Do uu or STACX have ads?

uu shows ads; STACX does not.

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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.*