What do you want to simulate?

Describe a real-world situation in plain language. RealitySim reconstructs the entities, selects a scientific model, computes the physics step by step and animates exactly what it calculated.

⌘ + Enter to run

Ready-made simulations

🚙Vehicle jump from a 35° incline 📱iPhone 15 dropped from 15 ft onto concrete 🛑Car braking hard from 80 km/h ⚾Ball thrown at 30 m/s and 45°🌎High-level hazard zones near a city

Deterministic engine

Every number comes from an explicit model integrated in SI units — input → model → calculation → result.

Traceable data

Real-world specifications are labelled official, reported, inferred or estimated, with sources.

Honest uncertainty

Confidence, assumptions, validity ranges and limitations are shown for every result.