Rytmos vs O
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
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.
O
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.
- One-tap gameplay
- Mind-bending geometry
- Randomly generated levels
- Chiptune soundtrack
- Unlockable customizations
- Global leaderboards
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Jump into the spinning circle of O-VOID! In this super minimal action runner, you’ll be jumping over obstacles with the tap of a finger. But this is not a regular platformer! The entire level can change direction or flip upside down to throw you off. Are you skilled enough to survive every challenge? Features: • Simple one-tap gameplay inside mind-bending geometry • 7 randomly generated levels for endless replayability • Unique and pumping chiptune soundtrack • Near impossible challenges to unlock player customizations • Global leaderboards to compete with the world on
Screenshots
Verdict
The clearest difference is rating: O at 4.6 against Rytmos's 3.6. O also leads on update cadence (weekly vs every 2 months) and review sentiment (72% vs 48%). Rytmos's advantage is ads (none vs shown) and chart position (#137 vs unranked). On price, in-app purchases, monetization model and device support 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. Rytmos sells 1 one-off in-app purchase and O sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.
O holds the better App Store score, 4.6 against 3.6. Both are backed by a comparable volume of ratings — 62 and 191 respectively. Written reviews point the same way: 48% of Rytmos's written reviews are positive against 72% of O's.
Rytmos ships an update every 2 months, O weekly. The most recent releases landed on September 28, 2026 and September 26, 2026 respectively.
| Parameter | Rytmos | O |
|---|---|---|
| Price | Free | Free |
| Rating | 3.6 (62 ratings) | 4.6 (191 ratings) — better |
| Positive reviews | 47.7% of reviews | 72.4% of reviews — better |
| Number of ratings | 62 | 191 — better |
| Update frequency | Every 2 months | Weekly — better |
| Ads | No — better | Yes |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Best chart rank | #137 — better | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 11.0 — better | 13.0 |
| Further details — not scored | ||
| Size | 730 MB | 43 MB |
| Age rating | 4+ | 4+ |
| Developer | Floppy Club | Gearhead Games ApS |
Customer experience
Rytmos
O
User reviews
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
O
From 191 App Store ratingsWhat we love
- 🎶 Great music/soundtrack
- 🎮 Challenging and satisfying gameplay
- 💡 Innovative game mechanics
- 💯 High skill ceiling/mastery
- ✨ Simple yet addictive
Room to improve
- 😵 Dizzying/makes users sick
- 🥵 Extremely difficult/too hard
- ⏳ Too short/lacks content
- 😵💫 Trippy and weird visuals
- 🤢 Makes users feel sick
Bugs and requests
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
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- 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
O
Reported bugs
9 issues- 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
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- Ads during gameplay cause freezes
- Level 6 is impossible
- Ads are annoying and unsolicited
- Forced ads when choosing to restart
Requested features
6 requests- Add more levels
- New dimension/different gameplay principle
- User level creator
- More beats/music synchronization
- Option to turn down color brightness
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- More publicity for leaderboards
In-app purchases
Rytmos
- Unlock the galaxy$4.99
O
- No Ads$2.99
