qTel vs Quantum
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
qTel
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This app shows how quantum teleportation works. The state of the first qubit is determined by five operators: X, Y, Z, H, U. This state is transferred to the third qubit at the end of all operations on the circuit. The state of three qubits at each step is shown in the box.
Quantum
Explore the hidden world of particles with a real-time simulator. Model up to 10,000 particles and experiment with natural phenomena like crystallization and orbital mechanics. Customize interactions and visualize results dynamically.
- Real-time particle simulation
- Model up to 10,000 particles
- Simulate natural phenomena
- Four distinct particle classes
- Customizable rules editor
- Dynamic visualizations
- Interactive control
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Experience the hidden world of particles Quantum is a real-time particle life sandbox for exploring emergent motion, artificial physics, and complex systems. Build fields with up to 10,000 particles, tune how classes attract or repel each other, and watch simple rules turn into flowing structures, swarms, or chaotic patterns. Why Quantum stands out: - Real-time particle simulation with four interacting particle classes. - Seamless 2D fields and perspective 3D volumes with touch rotation. - Rule editor for custom attraction and repulsion matrices. - Temperature, viscosity, solid/fluid edge behavior, and force tools. - Black hole and white hole tools for live interaction. - Save and load fields, rule sets, and color schemes. - P3 color support and vivid visual presets for generative art. Use Quantum as a physics toy, creative sandbox, teaching aid, or generative art lab. It is built for people who enjoy science, cellular automata, n-body systems, chaos, and beautiful simulations.
Screenshots
Verdict
The clearest difference is in-app purchases: qTel at none against Quantum's 6. qTel also leads on iOS requirement (16.0 vs 26.0). On price, ads and device support 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. Quantum sells 3 one-off in-app purchases. qTel asks for nothing beyond the download.
| Parameter | qTel | Quantum |
|---|---|---|
| Price | Free | Free |
| Rating | — | 4.8 (150 ratings) — better |
| Positive reviews | — | 81.3% of reviews |
| Number of ratings | — | 150 — better |
| Update frequency | — | Every 5 weeks |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | — | Free with in-app purchases |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 16.0 — better | 26.0 |
| Further details — not scored | ||
| Size | 6 MB | 32 MB |
| Age rating | 4+ | 4+ |
| Developer | Sungjun Kim | GEORGY OSTROBROD |
In-app purchases
qTel
No in-app purchases
Quantum
- Developer tip2 variants$1.99
- Developer tip2 variants$3.99
- Developer tip2 variants$5.99








