Quantum vs Grainfall
Price, ratings, monetisation and update history for both games, side by side โ with what reviewers say about each.
Quantum
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Unlock the Mysteries of the Quantum Realm! Dive into Quantum Cat, a unique 2D puzzle platformer that blends challenging physics-based gameplay with real quantum mechanics concepts. Take control of a cat with the extraordinary ability to exist in multiple states at once! The Observer Effect In this world, being seen changes everything. Navigate through 5 handcrafted levels where "Observers" (cameras and sensors) lock your state. Use your wits to stay hidden, or manipulate their gaze to your advantage. Superposition Mechanic Stuck at a wall? Need to be in two places at once? Activate your Superposition ability! Split your reality to interact with special quantum platforms, dodge traps, and phase through obstacles. But be carefulโyour quantum stability is draining fast! Key Features: -Unique Quantum Gameplay: A fresh take on platforming where you control probability, not just movement. -5 Mind-Bending Levels: Progressively difficult puzzles that will test your logic and reflexes. -Stability Management: Collect Quantum Orbs to restore your coherence and aim for the perfect run. -Dynamic Physics: Precise controls and interaction with a world that reacts to your presence. -Clean & Modern Art: A polished aesthetic inspired by the strange beauty of the subatomic world. Are you ready to challenge reality? Download Quantum Cat now and find out if the cat is alive, dead, or winning!
Grainfall
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Grainfall is a color-sorting puzzle that knows the perfect score. Every level runs through a real solver, so the game knows the exact fewest moves โ the par โ before your first pour. Match par for 3 stars and see exactly how close to perfect you played. Pour liquid between tubes until every color lands in its own tube. Simple to learn, hard to perfect. FEATURES - 500+ levels across 7 difficulty tiers, Easy to Grandmaster - A solver-computed par and star rating on every puzzle - Daily & Weekly challenges with streaks and iCloud sync - Hardcore Mode โ a countdown clock and only 3 undos - Deep Sort โ an endless 12โ13 color campaign for experts - Mini Games โ Shell Game, Void Memory, and a 50-level Rush Campaign - Customize tubes, fills, and backgrounds with tokens you earn by playing - 37 Game Center achievements - Colorblind mode and Reduce Motion support No subscriptions and no third-party ads. A one-time purchase unlocks every mode โ optional token packs are there if you want a boost, but you can earn everything just by playing.
Screenshots
Verdict
The clearest difference is in-app purchases: Quantum at none against Grainfall's 6. Quantum also leads on update cadence (every 4 days vs fortnightly). On price, ads, device support and iOS requirement there is nothing between them.
Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS
Both are free to download. Grainfall sells 6 one-off in-app purchases. Quantum asks for nothing beyond the download.
Quantum ships an update every 4 days, Grainfall fortnightly. The most recent releases landed on October 4, 2026 and September 30, 2026 respectively.
| Parameter | Quantum | Grainfall |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 4 days โ better | Fortnightly |
| Ads | No | No |
| In-app purchases | No โ better | Yes |
| Devices | iPhone | iPhone |
| Requires iOS | 17.6 | 17.0 โ better |
| Further details โ not scored | ||
| Size | 1 MB | 17 MB |
| Age rating | 4+ | 4+ |
| Developer | Celal Can Sagnak | Hrdlicka Apps LLC |
In-app purchases
Quantum
No in-app purchases
Grainfall
- 25 Coins$0.99
- Starter Pack โ 120 Coins$1.99
- 90 Coins$2.99
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- Premium Unlock$3.99
- 175 Coins$4.99
- 400 Coins$9.99









