MARVLS vs Quantum Bob
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- Augmented reality visualization
- Interactive quantum concepts
- Merge Cube integration
- Topics: superposition, entanglement, qubits
- Logic gates visualization
- Nuclear and electron spin models
Read full descriptionHide 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.
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.
- Real quantum measurement data
- Compete against quantum AI
- Local multiplayer
- Interactive lessons
- Progress tracking
- Statistical proof tests
Read full descriptionHide 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
Verdict
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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
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.
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.
| Parameter | MARVLS | Quantum Bob |
|---|---|---|
| Price | Free | Free |
| Rating | 1.0 (1 ratings) | 5.0 (5 ratings) — better |
| Positive reviews | 66.7% of reviews | 100.0% of reviews — better |
| Number of ratings | 1 | 5 — better |
| Update frequency | Every 4 weeks | Every 2 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone | iPhone, iPad — better |
| Requires iOS | 18.0 — better | 26.2 |
| Further details — not scored | ||
| Size | 168 MB | 13 MB |
| Age rating | 4+ | 4+ |
| Developer | Michele McColgan | SquatchCraft LLC |
Customer experience
MARVLS
Quantum Bob
In-app purchases
MARVLS
No in-app purchases
Quantum Bob
No in-app purchases
Questions
Is MARVLS free?
Is Quantum Bob free?
Which has better reviews, MARVLS or Quantum Bob?
Do MARVLS or Quantum Bob have ads?
Which is updated more often, MARVLS or Quantum Bob?
Other comparisons















