Comparison

Decodoku vs Quantum

Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.

Head to head
About

Decodoku

Engage in a unique puzzle game that doubles as a tool for scientific research in quantum error correction. Solve complex challenges to help advance the development of real-life quantum computers. Explore the science behind the game on the developer's website.

Highlights
  • Quantum puzzle gameplay
  • Scientific research tool
  • Quantum error correction
  • Advance quantum computing
  • Educational science content
Read full description

This is not just any puzzle game. This is a quantum puzzle game! You can just play it for fun, or you can use it to conduct scientific research in the field of quantum error correction. These are the puzzles that need to be solved to keep quantum computers free of errors. We need to work out the best way to do it. By becoming a master at this game, you could help build a real-life quantum computer. Check out our website for more details on the science behind the game. This app was developed by Dr James Wootton, a quantum error correction researcher at the University of Basel. It is supported by the NCCR QSIT.

About

Quantum

Features
Read full description

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 careful—your 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!

Screenshots

Decodoku1 screens
Quantum4 screens

Verdict

The call

The clearest difference is update cadence: Quantum at every 4 days against Decodoku's every 3 months. Decodoku's advantage is device support (3 vs 1) and iOS requirement (8.0 vs 17.6). On price, 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Decodoku ships an update every 3 months, Quantum every 4 days. The most recent releases landed on October 24, 2026 and October 25, 2026 respectively.

Scorecard3 real differences · 7 level
Decodoku versus Quantum: the parameters behind the verdict, then further details
ParameterDecodokuQuantum
PriceFreeFree
Rating5.0 (3 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings3 — better—
Update frequencyEvery 3 monthsEvery 4 days — better
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS8.0 — better17.6
Further details — not scored
Size52 MB1 MB
Age rating4+4+
DeveloperJames Robin WoottonCelal Can Sagnak

In-app purchases

None

Decodoku

No in-app purchases

None

Quantum

No in-app purchases

Questions

Is Decodoku free?
Decodoku is free to download, with no in-app purchases.
Is Quantum free?
Quantum is free to download, with no in-app purchases.
Do Decodoku or Quantum have ads?
Neither Decodoku nor Quantum shows ads.
Which is updated more often, Decodoku or Quantum?
Decodoku ships an update every 3 months, and Quantum every 4 days. Most recently, Decodoku was updated on October 24, 2026 and Quantum on October 25, 2026.

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