# uu vs circloO

The clearest difference is rating: circloO at 4.8 against uu's 3.7. circloO also leads on review sentiment (89% vs 47%) and ratings volume (2.4K vs 202). uu's advantage is ads (none vs shown) and iOS requirement (8.0 vs 10). On price, update cadence, in-app purchases and monetization model there is nothing between them.

Both are free to download. uu sells 3 one-off in-app purchases and circloO sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

circloO holds the better App Store score, 4.8 against 3.7. That said, the two scores are not equally well evidenced: circloO has 2.4K ratings behind it against 202, so its average is the more settled of the two. Written reviews point the same way: 47% of uu's written reviews are positive against 89% of circloO's.

uu ships an update every 5 weeks, circloO every 2 months. The most recent releases landed on August 30, 2026 and September 9, 2026 respectively.

## The numbers

| Metric | uu | circloO |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.7 (202 ratings)](https://appshunter.io/ios/app/uu/id927819165/reviews) | **[4.8 (2.4K ratings)](https://appshunter.io/ios/app/circloo-physics-platformer/id1612957699/reviews)** |
| Number of ratings | 202 | **2.4K** |
| Positive reviews | 47.1% of reviews | **89.5% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 5 weeks** | Every 2 months |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 13 MB | 63 MB |
| Requires iOS | **8.0** | 10 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [General Adaptive Apps Pty Ltd](https://appshunter.io/developer/937589555) | [Florian van Strien](https://appshunter.io/developer/1603079263) |

## 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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Skip uu Level | $0.99 | one-time |
| Remove uu Ads | $1.99 | one-time |
| Unlock All of uu | $3.99 | 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


### circloO

[App page](https://appshunter.io/ios/app/circloo-physics-platformer/id1612957699)

A colorful physics platformer where you guide a ball through growing circular levels. Collect circles to expand the play area, strategically using and avoiding obstacles. Discover unique physics mechanics and enjoy a vast collection of player-created levels.

**Highlights:** Circular physics puzzles, Level editor, Player-created levels, Unique physics mechanics, Growing levels, Hard Mode levels

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $2.99 | one-time |

**What reviewers like**

- 👍 Relaxing and enjoyable gameplay
- 🎨 Creative and unique levels
- 🎶 Calming background music
- 🧠 Challenging but not impossible
- 🕹️ Smooth and responsive controls

**What reviewers complain about**

- 🔍 Occasional performance issues
- 🕹️ Difficulty can be inconsistent
- 📺 Ads can be disruptive at times
- 🤑 Lack of free content/levels

**Reported bugs**

- Glitches with level progression
- Inconsistent touch/click registration

**Requested features**

- More levels and content updates
- Character customization options
- Improved level editor tools
- Difficulty settings or options


## Frequently asked questions

### Is uu free?

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

### Is circloO free?

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

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

circloO is rated higher. uu averages 3.7 out of 5 from 202 ratings, while circloO averages 4.8 from 2.4K ratings.

### Do uu or circloO have ads?

circloO shows ads; uu does not.

### Which is updated more often, uu or circloO?

uu ships an update every 5 weeks, and circloO every 2 months. Most recently, uu was updated on August 30, 2026 and circloO on September 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.*