Setup Creation and Engineering Suite
Build

Setup Developer

Create a complete baseline setup from scratch. Answer simple questions about your car and driving style. Get a personalized starting point engineered specifically to your needs.

Tune

Setup Engineer

Log your lap. Describe what the car is doing. Get specific, ranked recommendations with the reasoning behind every change. Adjust. Measure. Improve lap by lap.

Integrate

SimReader

Real-time data capture from seven simulators. Tire temps. Lap times. Sector data. Captured with a single hotkey. No alt-tabbing. No manual entry. Pure engineering.

Execute

Transparent Overlay

Everything runs on top of your sim. Read recommendations while making changes. Never leave the sim. Complete workflow. Zero friction.

Prefer Itch.io? Try the demo or get the full app.

Launching July 22, 2026

What You Get

Built for Real Setup Engineers

Everything you need to develop and refine race car setups with confidence and precision.

onRails SimReader capturing live tire temps and lap times from a simulator

SimReader Data

Real-time data capture from Assetto Corsa, iRacing, Automobilista 2, and more. Data appears instantly with a keypress.

onRails Setup Engineer showing ranked setup change recommendations

Targeted Coaching

20+ years of setup methodology built into every recommendation. Learn the reasoning, not just the numbers.

onRails transparent overlay running on top of a racing sim

Zero Friction

Overlay interface. Hotkey controls. All the tools you need without ever leaving your sim.

onRails lap analysis tracking lap-time improvement across a session

Measurable Progress

Track improvement across laps. See exactly how each change affects your performance.

onRails setup subjects list including camber, caster, springs, dampers, and aero

Every Setup Subject

Camber, caster, toe, springs, dampers, brakes, differential, aero. Complete coverage for every car type.

onRails car type selection for sports, touring, open-wheel, stock, sprint, and kart

Six Car Categories

Sports cars, touring cars, open-wheel, stock cars, sprint cars, and karts. Road courses and ovals.

Community

What Racers Say

“It doesn’t just solve your problems. It lets you learn and understand”

— DrivingItalia.net

“Effective and powerful, yet at the same time very simple and intuitive to use… We’ve done countless tests, with truly astonishing results on the track”

— DrivingItalia.net

Stay Updated

Get launch updates and tips for setup engineering.

We respect your inbox. Unsubscribe anytime.

All Products · Support

© 2026 Monkey Face Software LLC. All rights reserved.