OCO vs Rytmos
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
OCO
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.
- Simple one-touch controls
- Over 7000 challenging puzzles
- Level editor and sharing system
- Daily challenges
- Minimalist design
- Procedurally-generated soundtrack
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“OCO is an exceptionally clever one-touch puzzle-platformer” 8/10 Pocket Gamer “Gloriously addictive and intelligent puzzles” 8/10 Touch Arcade Immerse yourself in the beautiful audio-visual world of OCO Use simple one-touch controls to launch, rush, crash, glide, warp, and hang as you solve over 7000 fast-paced platforming puzzles FEATURES • Simple one-touch controls • Complex challenging puzzles • Precision platforming • 7000 hand-selected player-created levels • Create and share levels using OCO jpg levels system • Beautiful minimal design • Procedurally-generated soundtrack for every level • Built-in editor • Daily challenges • 'Discord' community • ‘Perfect solution’ challenges for all levels • 46 achievements AWARDS • Finalist 'Pocket Gamer People’s Choice Award', 2020 • Runner-up ‘Big Indie Pitch’, Develop, Brighton, 2018 • Finalist ‘Very Big Indie Pitch’ Pocket Gamer Connects, London, 2017
Rytmos
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.
- Maze puzzle gameplay
- Music creation
- Planet exploration
- Unlockable musical toys
- Music history facts
- Expansion pack included
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Rytmos is a relaxing puzzle game, where you create music by solving maze puzzles. Travel from planet to planet and discover new music. Solve the puzzles on each side of the cubic planets and create small musical loops that slowly evolves into full music compositions. Unlock 20+ musical toys and jam on top of the planet music. Learn a bit of rare music history while playing the game. This version of the game now includes a large expansion pack.
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | OCO | Rytmos |
|---|---|---|
| Price | Free | Free |
| Rating | 4.6 (2.4K ratings) — better | 3.6 (62 ratings) |
| Positive reviews | 73.0% of reviews — better | 47.7% of reviews |
| Number of ratings | 2.4K — better | 62 |
| Update frequency | Every 5 weeks — better | Every 2 months |
| Ads | Yes | No — better |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Best chart rank | #163 — better | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.0 | 11.0 — better |
| Further details — not scored | ||
| Size | 113 MB | 730 MB |
| Age rating | 4+ | 4+ |
| Developer | SPECTRUM48 LIMITED | Floppy Club |
Customer experience
OCO
Rytmos
User reviews
OCO
From 2.4K App Store ratingsWhat we love
- 👍 Smooth gameplay
- 🎨 Visually appealing
- 🎵 Great music/sound design
- 🧠 Challenging puzzles
- 🔓 Minimal ads
Room to improve
- 🐛 Frequent crashes/bugs
- 💰 Paywalls/in-app purchases
- 🤢 Can cause motion sickness
- 🔍 Restart level button hard to access
- 🕰️ Perfect time scores don't make sense
Rytmos
From 62 App Store ratingsWhat we love
- ✨ Beautiful design and graphics
- 🎶 Engaging music and sound design
- 🧠 Interesting and addictive puzzles
- 💡 Informative about music history and instruments
- 😌 Relaxing and enjoyable gameplay
Room to improve
- 💥 Frequent crashes and unresponsiveness
- ⚫ Black screen on launch
- 💰 Expensive for full version/expansions
- 🚫 Paywall after demo
- 📶 Requires internet connection
Bugs and requests
OCO
Reported bugs
4 issues- 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
5 requests- 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
Reported bugs
15 issues- App crashes on startup
- Black screen on launch
- Game freezes during purchase process
- Purchases not syncing across devices
- No sound issues
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- Levels not clickable after completion
- Graphical clipping issues
- Unintended solutions in puzzles
- Input latency in jam section
- Slider cube off-screen on certain devices/planets
- Words/text not displaying correctly
- Game not loading on older iPhones
- App closes unexpectedly
- Purchase verification issues
- Demo version not unlocking full game after purchase
Requested features
10 requests- 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
Show 5 moreShow fewer
- Fix display issues with button text
- Improve clarity on how sounds overlap
- Make the game more accessible to non-musicians
- Add challenges to extend playtime
- Consider a full game with ads instead of a high upfront cost
In-app purchases
OCO
- NO ADSFree
- x 2000 bits$0.99
- x 5000 bits$0.99
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- Remove ads$1.99
- x 8000 bits$2.99
- OCO pro$2.99
- x 30000 bits$4.99
- x 100000 bits$9.99
Rytmos
- Unlock the galaxy$4.99
