Map Projections vs Quantum Horizon
Price, ratings, monetisation and update history for both apps, side by side β with what reviewers say about each.
Map Projections
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Map Projections allows you to see how the choice of map projections affects how we view the world around us
Quantum Horizon
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Quantum Horizon is a cinematic observatory for relativity and quantum physics β built so you can feel spacetime, not only read about it. Fall toward a black hole and watch minutes become years. Drag masses across the Milky Way and catch Einstein rings. Prepare a wave function, then collapse it. Entangle two particles and run a real Bell test. Leave near light speed and return younger than the world that waited. WHERE SPACETIME BENDS β’ Black Hole Time Warp β Schwarzschild gravitational time dilation outside a horizon. Slide closer and watch Earth race ahead while your clock crawls. β’ Lensing Observatory β Interactive gravitational lensing across a Milky Way sky. Bend light, hunt rings, add companions that can fall into the well. β’ Relativistic Journey β Special relativity with live Ξ³. Feel the twin paradox as two ages, not a textbook footnote. β’ You vs Others β Two ages. One voyage. See who aged less after a near-light trip. QUANTUM MEASUREMENT β’ Wave Function Collapse β Write two futures, set amplitudes, measure with the Born rule. One path becomes real. β’ Branching Histories β Parallel stories, optional relativistic aging, one collapse that chooses a history. β’ Entanglement Lab β Bell states (Φ± / Ψ±), Alice & Bob detector angles, running correlations, and a CHSH test that can beat the classical limit β’ Live quantum link β collapse and entanglement sampling can reach a real-time quantum device β so the decisive moment is tied to genuine quantum hardware. MADE TO FEEL REAL Textbook formulas power the tools: Lorentz Ξ³, Schwarzschild dilation, thin-lens geometry, Born-rule probabilities, and Bell correlators from quantum mechanics. Beautiful, playable, and built for curious minds.
Screenshots
Verdict
The clearest difference is ads: Map Projections at none against Quantum Horizon's shown. Quantum Horizon's advantage is iOS requirement (15.0 vs 17.0). On price, in-app purchases and device support there is nothing between them.
Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
| Parameter | Map Projections | Quantum Horizon |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 6 months | β |
| Ads | No β better | Yes |
| In-app purchases | No | No |
| Devices | iPhone, iPad | iPhone, iPad, iPod β better |
| Requires iOS | 17.0 | 15.0 β better |
| Further details β not scored | ||
| Size | 11 MB | 104 MB |
| Age rating | 4+ | 4+ |
| Developer | Hans Harck Toenning17404998032 | Abdulrazaq Alonazi |
In-app purchases
Map Projections
No in-app purchases
Quantum Horizon
No in-app purchases





