Comparison

MARVLS vs Quantum Bob

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

Head to head
About

MARVLS

Explore quantum computing concepts through interactive augmented reality models. Requires a Merge Cube to visualize and manipulate topics like superposition and entanglement. Navigate through various educational modules to deepen your understanding.

Highlights
  • Augmented reality visualization
  • Interactive quantum concepts
  • Merge Cube integration
  • Topics: superposition, entanglement, qubits
  • Logic gates visualization
  • Nuclear and electron spin models
Features
Read full description

View augmented reality models of quantum computing concepts through your phone. You'll need a Merge Cube (link included to download). Click on different button to navigate to different topics. Tap the camera icon and point your camera towards the Merge Cube to visualize and interact with our MARVLS. Topics include observer dependency, superposition, entanglement, bits, qubits, nuclear and electron spin, logic gates, and trapped ions. Developer support provided by Leo Vanderlofske.

About

Quantum Bob

Engage with real quantum physics experiments by predicting measurement outcomes from actual quantum computer data. Compete against an AI leveraging quantum entanglement and discover the quantum advantage through interactive gameplay and lessons.

Highlights
  • Real quantum measurement data
  • Compete against quantum AI
  • Local multiplayer
  • Interactive lessons
  • Progress tracking
  • Statistical proof tests
Features
Read full description

QuantumBob puts real quantum physics in your hands. Compete against Alice, an AI that uses actual entanglement data from IBM's quantum processor, by guessing measurement outcomes. Can you beat the quantum advantage? PLAY REAL QUANTUM DATA Every round, a real quantum computer has already measured an entangled particle pair. You guess the result — 0 or 1. Alice reads her linked particle and makes the same prediction. The quantum correlations give her an edge that no classical strategy can match. THE QUANTUM ADVANTAGE Without quantum physics, the best any strategy can achieve is 75% accuracy. But Alice's entangled particles push her to about 85%. That 10% gap is physically impossible without quantum mechanics. You'll see it happen in real time as you play. FEATURES - Real quantum measurement data from IBM's Marrakesh quantum processor - Compete against Alice's quantum-powered AI in 10-round ranked games - Challenge friends with local pass-and-play multiplayer - Learn quantum concepts as you play with contextual tips - Track perfect rounds, win average, and Alice's accuracy over time - Explore interactive lessons on entanglement, Bell's theorem, and the Tsirelson bound - Compare real quantum data against classical fakes side by side - Run built-in statistical proof tests that verify the quantum advantage - Game Center leaderboards to compete globally NO PHYSICS DEGREE REQUIRED QuantumBob starts from zero. The interactive tutorial walks you through everything — from "what is 0 and 1?" to "why can't I beat 75%?" to "what makes quantum special?" You'll understand entanglement through playing, not studying. THE SCIENCE BEHIND THE GAME QuantumBob is built on the CHSH Bell experiment, one of the most important experiments in quantum physics. In 2022, the Nobel Prize in Physics was awarded for work proving that quantum entanglement violates Bell inequalities — exactly what you experience every time you play. All quantum data comes from real IBM quantum hardware. No simulations, no random number generators — actual measurements of entangled qubit pairs. Download QuantumBob and discover why quantum physics breaks the rules.

Screenshots

MARVLS4 screens
Quantum Bob4 screens

Verdict

The call

The clearest difference is rating: Quantum Bob at 5.0 against MARVLS's 1.0. Quantum Bob also leads on review sentiment (100% vs 67%) and update cadence (every 2 days vs every 4 weeks). MARVLS's advantage is iOS requirement (18.0 vs 26.2). On price, ads, in-app purchases and monetization model 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.

ReceptionRating · Positive reviews · Number of ratings

Quantum Bob holds the better App Store score, 5.0 against 1.0. That said, the two scores are not equally well evidenced: Quantum Bob has 5 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 67% of MARVLS's written reviews are positive against 100% of Quantum Bob's.

UpkeepUpdate frequency

MARVLS ships an update every 4 weeks, Quantum Bob every 2 days. The most recent releases landed on September 27, 2026 and October 4, 2026 respectively.

Scorecard5 real differences · 5 level
MARVLS versus Quantum Bob: the parameters behind the verdict, then further details
ParameterMARVLSQuantum Bob
PriceFreeFree
Rating1.0 (1 ratings)5.0 (5 ratings) — better
Positive reviews66.7% of reviews100.0% of reviews — better
Number of ratings15 — better
Update frequencyEvery 4 weeksEvery 2 days — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhoneiPhone, iPad — better
Requires iOS18.0 — better26.2
Further details — not scored
Size168 MB13 MB
Age rating4+4+
DeveloperMichele McColganSquatchCraft LLC

Customer experience

MARVLS

All ratings1 ratings
Positive0.0%
Neutral0.0%
Negative100.0%
Written reviews3 reviews
Positive66.7%
Neutral0.0%
Negative33.3%

Quantum Bob

All ratings5 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews2 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

MARVLS

No in-app purchases

None

Quantum Bob

No in-app purchases

Questions

Is MARVLS free?
MARVLS is free to download, with no in-app purchases.
Is Quantum Bob free?
Quantum Bob is free to download, with no in-app purchases.
Which has better reviews, MARVLS or Quantum Bob?
Quantum Bob is rated higher. MARVLS averages 1.0 out of 5 from 1 ratings, while Quantum Bob averages 5.0 from 5 ratings.
Do MARVLS or Quantum Bob have ads?
Neither MARVLS nor Quantum Bob shows ads.
Which is updated more often, MARVLS or Quantum Bob?
MARVLS ships an update every 4 weeks, and Quantum Bob every 2 days. Most recently, MARVLS was updated on September 27, 2026 and Quantum Bob on October 4, 2026.

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