by Red Rat in Hat
Import a track image, plan, sketch, or satellite view and calculate the racing line, speed profile, braking points, acceleration, and lap time directly on your device.
Screenshots
RaceLineCalc turns your track image into a measurable 2D track and calculates its racing line.
Use it for karting circuits, permanent tracks, private layouts, or lesser-known venues when you have an image but no ready-made digital track model.
Workflow
Store availability
The Android app is available now on Google Play by direct link or QR code. Availability on other platforms has not been announced.
Google Play
App Store
If the QR code does not open, use the direct store link.
Racing calculations
RaceLineCalc focuses on the track calculations drivers and motorsport enthusiasts can inspect before validating the result in practice.
Turn a plan, sketch, or satellite view into a calibrated 2D track and calculate its racing line.
Inspect the calculated lap time and speed profile for the selected geometry, physical model, and parameters.
Review braking points and longitudinal and lateral acceleration along the calculated line.
Compare two runs on the same track geometry and see how model or setup changes affect the result.
Start with a compact model that focuses on track geometry and a configurable acceleration envelope.
Explore presets and parameters for mass, power, braking, grip, dimensions, drivetrain, and aerodynamics.
Calculate a motorcycle racing line with bike-specific presets, acceleration limits, and lean-angle results.
Review the racing line, lap time, speed, longitudinal and lateral acceleration, braking points, run history, and a two-run comparison on the same track geometry.
Core project editing and calculation run on the device without a mandatory account or project upload. Store purchases, advertising, and external links may require network access.
RaceLineCalc is a motorsport calculator for track geometry, racing lines, speed, acceleration, braking, and lap times. It does not calculate fuel consumption, pit strategy, race odds, or betting returns.
Yes. It calculates the racing line for the track geometry, physical model, and parameters you provide. The current calculation uses a calibrated flat 2D track model.
Yes. Import indoor, outdoor, rental-kart, or custom circuit images, calibrate the scale, trace the track, and calculate the racing line.
Yes. The motorcycle model has bike-specific presets and parameters and calculates speed, acceleration, braking, and lean angle.
Yes. Completed runs include calculated lap time, speed, acceleration, and braking. The values come from the selected physical model and track geometry.
Core project editing and local calculation do not require an account or project upload. Store purchases, advertising, and external links may require internet access.
The current flat 2D model covers track geometry and selected vehicle parameters. Elevation, jumps, camber, changing grip, surface condition, weather, traffic, and driver choices remain outside its scope.