# uu vs aa crazy

The clearest difference is in-app purchases: aa crazy at none against uu's 3. aa crazy also leads on rating (4.0 vs 3.7) and review sentiment (66% vs 47%). uu's advantage is ads (none vs shown) and iOS requirement (8.0 vs 12.0). On price, ratings volume, update cadence and monetization model there is nothing between them.

Both are free to download. uu sells 3 one-off in-app purchases. aa crazy asks for nothing beyond the download.

aa crazy holds the better App Store score, 4.0 against 3.7. Both are backed by a comparable volume of ratings — 202 and 289 respectively. Written reviews point the same way: 47% of uu's written reviews are positive against 66% of aa crazy's.

uu ships an update every 5 weeks, aa crazy every 2 months. The most recent releases landed on October 16, 2026 and October 19, 2026 respectively.

## The numbers

| Metric | uu | aa crazy |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.7 (202 ratings)](https://appshunter.io/ios/app/uu/id927819165/reviews) | **[4.0 (289 ratings)](https://appshunter.io/ios/app/aa-crazy-stack-and-merged-dots/id1086455701/reviews)** |
| Number of ratings | 202 | **289** |
| Positive reviews | 47.1% of reviews | **65.9% of reviews** |
| In-app purchases | Yes | **No** |
| 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 | 20 MB |
| Requires iOS | **8.0** | 12.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [General Adaptive Apps Pty Ltd](https://appshunter.io/developer/937589555) | [Tinh Nguyen](https://appshunter.io/developer/915451185) |

## 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


### aa crazy

[App page](https://appshunter.io/ios/app/aa-crazy-stack-and-merged-dots/id1086455701)

A challenging casual game where players tap to shoot a large ball, aiming to avoid smaller balls within a circle. With over 1000 levels and simple controls, it offers addictive gameplay for all ages. Play offline and test your skills against friends.

**Highlights:** Tap to shoot, Avoid small balls, 1005+ levels, Addictive gameplay, Simple controls, Offline play

**Features:** macOS Compatibility

**In-app purchases:** none

**What reviewers like**

- 🤩 Addictive gameplay
- 👍 Fun and entertaining
- ✨ Amazing sound effects
- 💯 Great for passing time
- 🚀 Good for when no WiFi

**What reviewers complain about**

- 😩 Too many ads
- 😠 Ads are annoying
- 😤 Ads make me not want to play
- 😵 Game gets boring at level five
- 🤯 Levels become impossible

**Reported bugs**

- App crashes on opening
- Died without reaching anything
- Lost without touching the line
- Ads crash the game

**Requested features**

- Remove ads
- Add infinite mode
- Spice up the game
- Add more levels
- Option to buy passes by watching ads or completing levels


## Frequently asked questions

### Is uu free?

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

### Is aa crazy free?

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

### Which has better reviews, uu or aa crazy?

aa crazy is rated higher. uu averages 3.7 out of 5 from 202 ratings, while aa crazy averages 4.0 from 289 ratings.

### Do uu or aa crazy have ads?

aa crazy shows ads; uu does not.

### Which is updated more often, uu or aa crazy?

uu ships an update every 5 weeks, and aa crazy every 2 months. Most recently, uu was updated on October 16, 2026 and aa crazy on October 19, 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.*