O vs Shape Rhythm
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
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
Shape Rhythm
Experience a unique co-op musical bullet hell game. Dance through chaotic scenarios, avoiding dynamic shapes while grooving to catchy beats. Play solo or team up with friends for an exhilarating rhythm and mayhem fusion.
- Cooperative musical bullet hell
- Rhythm game fusion
- Intense and accessible gameplay
- Cooperative story mode
- Challenge runs
- Mesmerizing soundtrack and visuals
- Online and split-screen co-op
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Immerse yourself in the pulsating world of Shape Rhythm, a revolutionary co-op musical experience where chaos meets collaboration. Dance through bullet hell scenarios, avoiding dynamic Shapes while grooving to kick-ass Beats in a symphony of rhythm and mayhem. Whether braving the challenge alone or uniting with friends, Shape Rhythm introduces a unique spin to the SHMUP genre, merging the intensity of bullet hell with the magic of cooperative gameplay. Shape Rhythm is not just a game; it's a symphony of shapes, beats, and collaboration that delivers an exhilarating and accessible musical bullet hell experience. Game Features: Chaotic Co-op Musical Bullet Hell: Navigate a mesmerizing world where Shapes and Beats collide in a chaotic dance. Rhythm Game Fusion: Experience the fusion of a bullet hell shoot-'em-up with the exhilaration of a rhythm game. Intense and Accessible Gameplay: Escape alive, feel the growing desire for survival, and immerse yourself in the catchy soundtrack that accompanies the action. In-App Features: Cooperative Story Mode and Challenge Runs: Take on Challenge Runs for an extra layer of difficulty and compete for high scores with friends or players worldwide. Mesmerizing Soundtrack and Visuals: Delight in clear and pleasant visuals, finding the perfect balance between challenge and accessibility. Dynamic Difficulty with Nice Tunes: Revel in nice tunes as you progress through levels, creating an immersive and enjoyable gaming experience. Player Modes: Single-player; Online PvP; Shared/Split Screen PvP; Online Co-op; Shared/Split Screen Co-op. Dance to the rhythm, avoid the shapes, and immerse yourself in the harmonious chaos of Shape Rhythm.
Screenshots
Verdict
The clearest difference is update cadence: O at weekly against Shape Rhythm's every 7 months. O also leads on rating (4.6 vs 4.2) and review sentiment (72% vs 48%). On price, ratings volume, ads and in-app purchases 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. O sells 1 one-off in-app purchase and Shape Rhythm 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 4.2. Both are backed by a comparable volume of ratings — 191 and 195 respectively. Written reviews point the same way: 72% of O's written reviews are positive against 48% of Shape Rhythm's.
O ships an update weekly, Shape Rhythm every 7 months. The most recent releases landed on September 26, 2026 and September 30, 2026 respectively.
| Parameter | O | Shape Rhythm |
|---|---|---|
| Price | Free | Free |
| Rating | 4.6 (191 ratings) — better | 4.2 (195 ratings) |
| Positive reviews | 72.4% of reviews — better | 48.4% of reviews |
| Number of ratings | 191 | 195 — better |
| Update frequency | Weekly — better | Every 7 months |
| Ads | Yes | Yes |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 13.0 | 12.0 — better |
| Further details — not scored | ||
| Size | 43 MB | 206 MB |
| Age rating | 4+ | 9+ |
| Developer | Gearhead Games ApS | Lam Dao Thi Thanh |
Customer experience
O
Shape Rhythm
User reviews
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
Shape Rhythm
From 195 App Store ratingsWhat we love
- 🎶 Great music and beats
- 🎮 Fun gameplay
- 📱 Good mobile port of JSAB
- 👍 Well-made and entertaining
- ✨ Cool graphics
Room to improve
- 광고 Excessive ads
- 📉 Poorly made
- ⚠️ Unpredictable attacks
- 😵 Annoying ads during gameplay
- 🗑️ Bootleg/Rip-off game
Bugs and requests
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
Shape Rhythm
Reported bugs
8 issues- Keeps crashing
- Game crashes occasionally
- Game freezes after ad
- Ad turns off all sounds
- Game bugs and doesn't let you play
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- Attacks are unpredictable
- Game lags or crashes
- No audio
Requested features
10 requests- Add more songs
- Add story mode and bosses
- Extend 'together forever'
- Make it a bit easier
- Show which is the boss and which is normal
Show 5 moreShow fewer
- Add more levels and updates
- Improve indications for obstacles
- Make ads less frequent or optional
- Add more stages
- Make it less difficult
In-app purchases
O
- No Ads$2.99
Shape Rhythm
- Remove Ads$1.99









