# Crazy Marbles vs O

The clearest difference is price: O at Free against Crazy Marbles's $0.99. O also leads on update cadence (weekly vs every 7 months) and ratings volume (191 vs 5). Crazy Marbles's advantage is in-app purchases (none vs 1) and ads (none vs shown). On review sentiment, device support and iOS requirement there is nothing between them.

O is free to download; Crazy Marbles costs $0.99 up front. O sells 1 one-off in-app purchase. Crazy Marbles asks for nothing beyond the download.

Crazy Marbles holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: O has 191 ratings behind it against 5, so its average is the more settled of the two. Written reviews point the same way: 78% of Crazy Marbles's written reviews are positive against 72% of O's.

Crazy Marbles ships an update every 7 months, O weekly. The most recent releases landed on September 27, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | Crazy Marbles | O |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | **[5.0 (5 ratings)](https://appshunter.io/ios/app/crazy-marbles/id406226862/reviews)** | [4.6 (191 ratings)](https://appshunter.io/ios/app/o-void/id6449623550/reviews) |
| Number of ratings | 5 | **191** |
| Positive reviews | **78.3% of reviews** | 72.4% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 7 months | **Weekly** |
| Monetization | Paid | **Free with in-app purchases** |
| Best chart rank | — | **#157** |
| Size | 101 MB | 43 MB |
| Requires iOS | **12.0** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Rost Solutions](https://appshunter.io/developer/307830710) | [Gearhead Games ApS](https://appshunter.io/developer/1163605497) |

## What reviewers say

### Crazy Marbles

[App page](https://appshunter.io/ios/app/crazy-marbles/id406226862)

A fast-paced puzzle game where players rotate wheels to guide marbles of the same color, triggering chain reactions. It offers increasingly challenging levels and global competition.

**Highlights:** Rotate wheels to guide marbles, Match same-colored marbles, Trigger explosive chain reactions, Innovative obstacles, Global competition and leaderboards, Optimized controls for iPhone and iPad

**Features:** macOS Compatibility

**In-app purchases:** none


### O

[App page](https://appshunter.io/ios/app/o-void/id6449623550)

**Currently charting:** #157 Top Grossing · Music (US App Store)

Navigate a spinning circle through challenging obstacles in this minimal action runner. Levels dynamically change direction and flip, testing your reflexes. Compete globally and unlock customizations.

**Highlights:** One-tap gameplay, Mind-bending geometry, Randomly generated levels, Chiptune soundtrack, Unlockable customizations, Global leaderboards

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| No Ads | $2.99 | one-time |

**What reviewers like**

- 🎶 Great music/soundtrack
- 🎮 Challenging and satisfying gameplay
- 💡 Innovative game mechanics
- 💯 High skill ceiling/mastery
- ✨ Simple yet addictive

**What reviewers complain about**

- 😵 Dizzying/makes users sick
- 🥵 Extremely difficult/too hard
- ⏳ Too short/lacks content
- 😵‍💫 Trippy and weird visuals
- 🤢 Makes users feel sick

**Reported bugs**

- Spinning makes users sick
- Obstacles in later levels require luck/insane reaction time
- Effect does not disappear properly in penultimate level
- Game is glitchy, laggy, and unresponsive
- Revive ad doesn't work/can't close ad

**Requested features**

- Add more levels
- New dimension/different gameplay principle
- User level creator
- More beats/music synchronization
- Option to turn down color brightness


## Frequently asked questions

### Is Crazy Marbles free?

Crazy Marbles costs $0.99, with no in-app purchases.

### Is O free?

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

### Which has better reviews, Crazy Marbles or O?

Crazy Marbles is rated higher. Crazy Marbles averages 5.0 out of 5 from 5 ratings, while O averages 4.6 from 191 ratings.

### Do Crazy Marbles or O have ads?

O shows ads; Crazy Marbles does not.

### Which is updated more often, Crazy Marbles or O?

Crazy Marbles ships an update every 7 months, and O weekly. Most recently, Crazy Marbles was updated on September 27, 2026 and O on October 13, 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.*