# OCO vs Project

The clearest difference is chart position: OCO at #161 against Project's unranked. Project's advantage is iOS requirement (12.0 vs 15.0). On price, rating, review sentiment and ratings volume there is nothing between them.

Both are free to download. OCO sells 8 one-off in-app purchases and Project sells 18 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 4.6 for OCO against 4.6 for Project. Both are backed by a comparable volume of ratings — 2.4K and 1.5K respectively. Written reviews split almost evenly too, at 73% and 72% positive.

OCO ships an update every 5 weeks, Project monthly. The most recent releases landed on September 23, 2026 and September 22, 2026 respectively.

## The numbers

| Metric | OCO | Project |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.6 (2.4K ratings)](https://appshunter.io/ios/app/oco/id1030437345/reviews) | [4.6 (1.5K ratings)](https://appshunter.io/ios/app/project-muse/id1094656747/reviews) |
| Number of ratings | **2.4K** | 1.5K |
| Positive reviews | **73.0% of reviews** | 72.4% of reviews |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 5 weeks | **Monthly** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Best chart rank | **#161** | — |
| Size | 113 MB | 1.2 GB |
| Requires iOS | 15.0 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 9+ |
| Developer | [SPECTRUM48 LIMITED](https://appshunter.io/developer/896496053) | [Rinzz Co. Ltd.](https://appshunter.io/developer/948116526) |

## What reviewers say

### OCO

[App page](https://appshunter.io/ios/app/oco/id1030437345)

**Currently charting:** #161 Top Grossing · Music, #183 Top Free · Music (US App Store)

Engage in a captivating one-touch puzzle-platformer with over 7000 levels. Master simple controls to navigate challenging environments, create your own levels, and enjoy a unique audio-visual experience. Compete in daily challenges and strive for perfect solutions.

**Highlights:** Simple one-touch controls, Over 7000 challenging puzzles, Level editor and sharing system, Daily challenges, Minimalist design, Procedurally-generated soundtrack

**Features:** Vision Pro support

**In-app purchases (8)**

| Purchase | Price | Billing |
| --- | --- | --- |
| NO ADS | Free | one-time |
| x 2000 bits | $0.99 | one-time |
| x 5000 bits | $0.99 | one-time |
| Remove ads | $1.99 | one-time |
| x 8000 bits | $2.99 | one-time |
| OCO pro | $2.99 | one-time |
| x 30000 bits | $4.99 | one-time |
| x 100000 bits | $9.99 | one-time |

**What reviewers like**

- 👍 Smooth gameplay
- 🎨 Visually appealing
- 🎵 Great music/sound design
- 🧠 Challenging puzzles
- 🔓 Minimal ads

**What reviewers complain about**

- 🐛 Frequent crashes/bugs
- 💰 Paywalls/in-app purchases
- 🤢 Can cause motion sickness
- 🔍 Restart level button hard to access
- 🕰️ Perfect time scores don't make sense

**Reported bugs**

- Game crashes on startup after updates
- Slow mode issue prevents level uploads
- Levels sometimes can't be opened
- Losing progress/data after updates

**Requested features**

- Add different beat/music options
- Allow liking levels without completing them
- Improve level saving/loading
- Add more block types (traps, flippers, etc.)
- Bring back online features


### Project

[App page](https://appshunter.io/ios/app/project-muse/id1094656747)

Experience an innovative music game where every tap triggers original electronic sounds. Engage in rhythm gameplay with unique multi-track challenges, diverse music styles, and customizable characters. Compete with friends and players worldwide in this visually rich experience.

**Highlights:** Rhythm gameplay with real-time pronunciation, Original independent electronic music, Multi-track music challenges, Diverse and updated music styles, Customizable characters and skins, Global player competition, Potential visual improvement for amblyopia

**In-app purchases (18)**

| Purchase | Price | Billing |
| --- | --- | --- |
| New Journey - Coins Pack | $0.99 | one-time |
| Green Light - Package A | $0.99 | one-time |
| New Player Bonus | $0.99 | one-time |
| Lucky Coin Package | $0.99 | one-time |
| Unlimited Energy | $1.99 | one-time |
| Skin package | $2.99 | one-time |
| Fall Harvest Day Anecdote | $2.99 | one-time |
| The Holy Night Expedition | $2.99 | one-time |
| Lucky Snowy Cloud Nation | $2.99 | one-time |
| Forest Rhapsody | $2.99 | one-time |
| Journey To Another World | $2.99 | one-time |
| Cherry Blossom Dreams | $2.99 | one-time |
| Time Gala: Mystery Tracker | $2.99 | one-time |
| Eve Ritual: King Project | $2.99 | one-time |
| Summer Escape Plan | $2.99 | one-time |
| On The Way - Coins Pack | $3.99 | one-time |
| VIP PACK | $5.99 | one-time |
| Sparks Fly - Coins Pack | $8.99 | one-time |

**What reviewers like**

- 🎨 Beautiful visuals and character designs
- 🎵 Catchy and enjoyable music
- 🕹️ Fun and challenging gameplay
- 👍 Addictive and engaging experience

**What reviewers complain about**

- 🐛 Bugs and glitches (note sync issues, crashes, freezes)
- 💰 Excessive in-app purchases and paywalls
- 🔇 Sound issues (music cutting out)
- 🤯 Difficulty spike for newer players

**Reported bugs**

- Levels/songs getting locked after updates
- Inconsistent note registration on 4-lane sections
- SOS feature not working as intended
- Progress/data loss after reinstalling the app

**Requested features**

- Practice mode for individual song sections
- More frequent content updates
- Ability to restore previously purchased content
- Improved calibration and note detection


## Frequently asked questions

### Is OCO free?

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

### Is Project free?

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

### Which has better reviews, OCO or Project?

OCO and Project are both rated 4.6 out of 5 on the App Store, from 2.4K and 1.5K ratings respectively.

### Do OCO or Project have ads?

Both OCO and Project show ads.

### Which is updated more often, OCO or Project?

OCO ships an update every 5 weeks, and Project monthly. Most recently, OCO was updated on September 23, 2026 and Project on September 22, 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.*