# OCO vs Rytmos

The clearest difference is rating: OCO at 4.6 against Rytmos's 3.6. OCO also leads on review sentiment (73% vs 48%) and ratings volume (2.4K vs 62). Rytmos's advantage is ads (none vs shown) and iOS requirement (11.0 vs 15.0). On price, update cadence, in-app purchases and monetization model there is nothing between them.

Both are free to download. OCO sells 8 one-off in-app purchases and Rytmos sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

OCO holds the better App Store score, 4.6 against 3.6. That said, the two scores are not equally well evidenced: OCO has 2.4K ratings behind it against 62, so its average is the more settled of the two. Written reviews point the same way: 73% of OCO's written reviews are positive against 48% of Rytmos's.

OCO ships an update every 5 weeks, Rytmos every 2 months. Both last shipped on September 23, 2026.

## The numbers

| Metric | OCO | Rytmos |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (2.4K ratings)](https://appshunter.io/ios/app/oco/id1030437345/reviews)** | [3.6 (62 ratings)](https://appshunter.io/ios/app/rytmos/id1673697954/reviews) |
| Number of ratings | **2.4K** | 62 |
| Positive reviews | **73.0% of reviews** | 47.7% of reviews |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | **Every 5 weeks** | Every 2 months |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Best chart rank | **#165** | — |
| Size | 113 MB | 730 MB |
| Requires iOS | 15.0 | **11.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [SPECTRUM48 LIMITED](https://appshunter.io/developer/896496053) | [Floppy Club](https://appshunter.io/developer/1673697956) |

## What reviewers say

### OCO

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

**Currently charting:** #165 Top Grossing · 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


### Rytmos

[App page](https://appshunter.io/ios/app/rytmos/id1673697954)

Solve maze puzzles to create evolving musical compositions. Explore planets, discover new sounds, and unlock musical toys. This relaxing game also offers insights into music history.

**Highlights:** Maze puzzle gameplay, Music creation, Planet exploration, Unlockable musical toys, Music history facts, Expansion pack included

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock the galaxy | $4.99 | one-time |

**What reviewers like**

- ✨ Beautiful design and graphics
- 🎶 Engaging music and sound design
- 🧠 Interesting and addictive puzzles
- 💡 Informative about music history and instruments
- 😌 Relaxing and enjoyable gameplay

**What reviewers complain about**

- 💥 Frequent crashes and unresponsiveness
- ⚫ Black screen on launch
- 💰 Expensive for full version/expansions
- 🚫 Paywall after demo
- 📶 Requires internet connection

**Reported bugs**

- App crashes on startup
- Black screen on launch
- Game freezes during purchase process
- Purchases not syncing across devices
- No sound issues

**Requested features**

- Add multi-touch functionality for instruments
- Improve jam section responsiveness
- Allow viewing instrument history after unlock
- Port to VR
- Add more free levels or planets


## Frequently asked questions

### Is OCO free?

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

### Is Rytmos free?

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

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

OCO is rated higher. OCO averages 4.6 out of 5 from 2.4K ratings, while Rytmos averages 3.6 from 62 ratings.

### Do OCO or Rytmos have ads?

OCO shows ads; Rytmos does not.

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

OCO ships an update every 5 weeks, and Rytmos every 2 months. Most recently, OCO was updated on September 23, 2026 and Rytmos on September 23, 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.*