# uu vs kubic

The clearest difference is rating: kubic at 4.4 against uu's 3.7. uu's advantage is ads (none vs shown) and review sentiment (47% vs 36%). On price, ratings volume, update cadence and in-app purchases there is nothing between them.

Both are free to download. uu sells 3 one-off in-app purchases and kubic sells 5 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

kubic holds the better App Store score, 4.4 against 3.7. Both are backed by a comparable volume of ratings — 202 and 245 respectively. Written reviews complicate that: 47% of uu's written reviews are positive against 36% of kubic's, so the app with the better star average is not the one people write more warmly about.

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

## The numbers

| Metric | uu | kubic |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.7 (202 ratings)](https://appshunter.io/ios/app/uu/id927819165/reviews) | **[4.4 (245 ratings)](https://appshunter.io/ios/app/kubic/id1062903406/reviews)** |
| Number of ratings | 202 | **245** |
| Positive reviews | **47.1% of reviews** | 36.4% 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 | 383 MB |
| Requires iOS | **8.0** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [General Adaptive Apps Pty Ltd](https://appshunter.io/developer/937589555) | [Pixel Envision Ltd.](https://appshunter.io/developer/444289214) |

## 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


### kubic

[App page](https://appshunter.io/ios/app/kubic/id1062903406)

This optical illusion puzzle game challenges players to construct impossible structures inspired by M.C. Escher's art. With a clean design and minimalistic graphics, it offers over 60 mind-bending puzzles across various geometric and spatial themes. Features include layer locking, zoom, and an in-game hint system to aid progression.

**Highlights:** Optical illusion puzzles, M.C. Escher inspired designs, Geometric and impossible objects, Layer locking and manipulation, Zoom and view controls, In-game hint system, Progress syncing via iCloud

**Features:** macOS Compatibility

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 10 Hints | $0.99 | one-time |
| No Ads | $1.99 | one-time |
| 25 Hints | $1.99 | one-time |
| 50 Hints | $2.99 | one-time |
| 100 Hints | $3.99 | one-time |

**What reviewers like**

- 💡 Original and clever puzzles
- 🧠 Mind-bending challenges
- 👍 Fun and engaging gameplay
- ✨ Well-realized game concept
- 🤔 Puzzles make you think

**What reviewers complain about**

- 😠 Frustrating tile placement
- 📉 Steep difficulty curve
- 💸 Excessive and intrusive ads
- 😩 Stressful user experience
- ⚠️ Ads interrupt gameplay

**Reported bugs**

- Tiles not sticking correctly
- App won't launch offline
- App won't load/crashes on launch
- In-app purchase attempts forced
- Bug with in-app purchase activation

**Requested features**

- Fix tile placement issues
- Improve difficulty curve
- Option to rotate puzzles
- Option to lock in pieces
- Dark mode for night play


## Frequently asked questions

### Is uu free?

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

### Is kubic free?

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

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

kubic is rated higher. uu averages 3.7 out of 5 from 202 ratings, while kubic averages 4.4 from 245 ratings.

### Do uu or kubic have ads?

kubic shows ads; uu does not.

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

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