Kotoro vs Quantum Fusion
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
Kotoro
An atmospheric puzzle game where you mix colors to achieve target hues. Explore 8 chapters and 96 unique challenges based on fundamental color theory principles. Enjoy a relaxing experience with a beautiful soundtrack and minimalist design.
- Color mixing puzzles
- 8 chapters with unique mechanics
- 96 challenging levels
- Atmospheric soundtrack
- Minimalist and dreamy visuals
- iCloud progress sync
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"The visuals in Kotoro are simply beautiful." - AppAdvice "Based on a simple but effective principle." - MacGeneration "Something different to do at every turn." - 148Apps Featured by Apple as one of the Best New Games Kotoro is the first atmospheric puzzle game about color mixing based on the rules we all learn as children. Your objective is simple: Become a certain color by mixing with others. - 8 Chapters, 96 puzzles: Each chapter explores a new idea such as subtraction, replication or time - No Ads. No In-App Purchases. - Atmospheric soundtrack powered by 7 talented musicians from around the world - Fully localized for French, Chinese, Japanese and Spanish - Sync your game progress with iCloud - Minimalist, dreamy and beautiful - Ambient and relaxing experience
Quantum Fusion
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Fuse the universe, one particle at a time. Quantum Fusion is a physics-themed twist on the classic merge puzzle. Slide to combine subatomic particles and cosmic objects — from humble Quarks up through Protons, Atoms, Molecules, and Stars, all the way to a Black Hole. Every tile is drawn in real time by a single custom shader: glowing orbs, orbiting electrons, comet tails, pulsar beams, and an event-horizon photon ring. But this is more than 2048 in space. Original mechanics change how you play: • Quantum Superposition — tiles exist in two states at once until observed • Electron Capture — Protons quietly evolve by absorbing electrons • Quantum Tunneling — particles fuse straight through barriers Simple to pick up, deep to master. Chase the leaderboard, plan your merges, and see how far up the cosmic ladder you can climb.
Screenshots
Verdict
The clearest difference is price: Quantum Fusion at Free against Kotoro's $0.99. Kotoro's advantage is in-app purchases (none vs 1) and device support (3 vs 1). On ads 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
Quantum Fusion is free to download; Kotoro costs $0.99 up front. Quantum Fusion sells 1 one-off in-app purchase. Kotoro asks for nothing beyond the download.
| Parameter | Kotoro | Quantum Fusion |
|---|---|---|
| Price | $0.99 | Free — better |
| Rating | 4.7 (118 ratings) — better | — |
| Positive reviews | 90.6% of reviews | — |
| Number of ratings | 118 — better | — |
| Update frequency | Every 6 weeks | — |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Paid | — |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 13.0 — better | 16.0 |
| Further details — not scored | ||
| Size | 108 MB | 66 MB |
| Age rating | 4+ | 4+ |
| Developer | Semidome Inc. | Andrei Poriadin |
Bugs and requests
Kotoro
Reported bugs
4 issues- Music doesn't play on iPhone (works on iPad)
- App crashes frequently
- Incompatible with iOS 11 and newer (32-bit limitation)
- App compatibility warning on newer iOS versions
Requested features
10 requests- More levels and content
- Sound toggle/mute option
- Colorblind mode with textures or symbols
- Additive color (RGB) mixing levels
- On-demand tutorial system
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- Automatic progression to next level upon completion
- Visual feedback for level completion
- iOS 11+ and 64-bit app update
- Better chapter/progress indicators
- Increased spatial puzzle complexity
Quantum Fusion
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Kotoro
No in-app purchases
Quantum Fusion
- Unlock unlimited undo$3.99









