A real piston
engine,
simulated.

Build it, tune it, rev it. Rigid-body physics down to the crank degree, on Mac, iPhone and iPad.

UNDER THE HOOD

Not a toy. A simulator.

01

Procedural 3D geometry

Block, head and crank modelled from spec. One cylinder to V12, plus the weird stuff.

02

Full engine builder

Eleven sections of real engineering knobs. Set them once and the engine derives the rest.

03

ECU tuner

Brush ignition and fuel cells across load by RPM. Cells flood red when you push past safe.

04

Live dyno

Real torque and power curves with peak callouts. Tune, run, retune until it pulls clean.

05

OBD-II diagnostics

Live wireframe scan. Real fault codes. Break it, then one tap to repair.

06

On-device AI builder

Describe the engine you want. The model drafts the full spec, ready to fine-tune.

NATIVE PERFORMANCE

Built for Apple Silicon.

A native Mac, iPhone and iPad app, built for Apple Silicon. The entire engine simulation runs in real time, right on your device.

  • M1
  • M2
  • M3
  • M4
  • A‑series

Native on every M‑series Mac, plus A‑series iPhone and iPad. The chips shown are a sample of the lineup.

UNIVERSAL

On iPhone and iPad too.

The same simulator, the same physics, tuned for touch.

Track dashboard on iPhone
Engine geometry on iPhone
ECU fuel map on iPhone
Dyno power curve on iPhone
Camshaft valve events on iPhone
Global leaderboard on iPhone
Cylinder parameters on iPhone
V-engine geometry on iPhone
Firing order on iPhone
Diagnostic wireframe on iPhone
Track and transmission on iPhone
Engine builder on iPhone
ECU map and dyno on iPhone
Builder gauges on iPhone
Engine spec sheet on iPhone
Builder breakdown on iPhone
Inline engine geometry on iPhone
AI engine builder on iPhone
Builder sliders on iPhone
Fault diagnostics on iPhone
GET NOTIFIED

Be first in line.

Free to download on Mac, iPhone and iPad. Drop your email and we'll let you know the moment it launches.