Newtonic

Physics that finally clicks.

59 simulations you can push around, from a thrown ball to an electron tunneling through a wall. Each one comes with its formulas, a plain-language explanation and a quiz.

Get Newtonic on the App Store

For iPhone and iPad. Free to download.

Projectile motion, the first simulation in the app. Drag across the field to aim, then let go.

Range R
40.8m
Max height H
10.2m
Flight time T
2.88s

Every topic, three ways in

Play with it until you have a hunch, read why it happens, then check that you really got it.

Change it and watch it answer

Drag a pendulum, strengthen a field, tilt a ramp. Every control has real units, and every readout comes from the actual equations, solved live on your device.

59 simulations across 11 fields

From Newton's laws to the atomic nucleus, in the order you meet them in class. A green dot marks the 18 that are free, and new simulations keep arriving.

Classical physics 8 fields, 41 simulations

Classical Mechanics 7

  • Projectile Motion (free)
  • Forces on an Incline (free)
  • Uniform Circular Motion
  • Momentum & Collisions
  • Energy Conservation (Skate Park)
  • Rotational Dynamics: Rolling Race
  • Conservation of Angular Momentum

Gravity & Orbits 3

  • Kepler's Laws (free)
  • Newton's Cannon & Escape Velocity
  • Gravity Sandbox (N-body)

Fluids 3

  • Buoyancy & Archimedes' Principle (free)
  • Bernoulli's Principle & Continuity
  • Drag & Terminal Velocity

Oscillations 4

  • Simple Pendulum (free)
  • Mass on a Spring: Damped & Driven
  • Double Pendulum & Chaos
  • Coupled Oscillators & Normal Modes

Waves & Sound 4

  • Standing Waves on a String (free)
  • Two-Source Interference (Ripple Tank)
  • Doppler Effect & Sonic Booms
  • Fourier Synthesis & Beats

Thermodynamics 6

  • Ideal Gas Law (free)
  • Maxwell–Boltzmann Distribution (free)
  • Brownian Motion & Diffusion
  • Heat Conduction (Fourier's Law)
  • Heat Engines & the Carnot Cycle
  • Entropy & the Second Law

Electricity & Magnetism 8

  • Coulomb's Law (free)
  • Electric Fields & Potential (free)
  • Ohm's Law & DC Circuits
  • RC Circuit: Charging & Discharging
  • Lorentz Force: Charges in E & B Fields
  • Magnetic Fields of Currents
  • Faraday's & Lenz's Law
  • LC & RLC Circuits

Optics & Light 6

  • Refraction, Snell's Law & Total Internal Reflection (free)
  • Lenses & Mirrors: Image Formation (free)
  • Diffraction & Interference (Young's Slits)
  • Polarization & Malus's Law
  • Dispersion: Prisms & Rainbows
  • Electromagnetic Waves

Modern physics 3 fields, 18 simulations

Relativity 6

  • Time Dilation: The Light Clock (free)
  • Length Contraction (free)
  • Spacetime Diagrams & Lorentz Transformations
  • Relativistic Velocity Addition
  • Mass–Energy & Relativistic Momentum
  • Gravitational Lensing

Quantum Mechanics 6

  • Particle in a Box (free)
  • Quantum Tunneling (free)
  • Heisenberg Uncertainty Principle
  • Quantum Harmonic Oscillator
  • Wave–Particle Duality: Single Electrons
  • Hydrogen Atom Orbitals

Atomic & Nuclear 6

  • The Photoelectric Effect (free)
  • Blackbody Radiation (free)
  • Bohr Model & Atomic Spectra
  • Compton Scattering
  • Radioactive Decay & Half-Life
  • Binding Energy, Fission & Fusion
Newtonic on iPad: the gravitational lensing simulation, with an Einstein ring around a galaxy, readouts and controls beside it, and the list of fields in the sidebar.

Room to experiment on iPad

On the big screen the controls sit right next to the simulation and every field stays one tap away in the sidebar. Bend light around a galaxy, then pull the source off-center and watch the ring break apart.

Start free, unlock everything when you're ready

Free

No account, no ads

  • 18 complete simulations, at least one in every field
  • Formulas, theory, experiments and a quiz for each
  • Works offline

Newtonic Pro

Yearly with a free week, monthly, or once for life. Prices in your currency in the app.

  • All 59 simulations, and every new one as it arrives
  • Share with up to five people through Family Sharing
  • Cancel anytime in your Apple account settings
Get Newtonic on the App Store

Make the next topic click

18 simulations are free. Download Newtonic and start with the one your class is on right now.

Get Newtonic on the App Store