A lightweight sim racing telemetry overlay. Displays pedal inputs, steering angle, gear, and speed in real time as a transparent overlay on top of your game.
A demo of SimTrace in action showing the (toggleable) braking x steering phase plot on the left and brake/throttle traces on the right.
- Pedal trace graph — scrolling throttle, brake, and clutch history
- Pedal bars — live clutch, brake, and throttle with ABS indication
- Steering wheel — visual angle indicator with gear and speed readout
- Transparent overlay — drag to position, drag the corner to resize
- Configurable — opacity, speed unit, colours, and trace window length
- Trail braking help — Useful utilities to help with trail braking
- Brake trace colouring - Configurable colouring showing braking and ABS activation during cornering
- Braking x steering phase plot - Live indicator to monitor corner entry/exit in real time
| Game | Notes |
|---|---|
| Assetto Corsa Competizione | |
| Automobilista 2 | Enable shared memory |
| iRacing | Support is currently experimental |
| EA SPORTS F1 25 | UDP 2025 and 2026 Season Pack |
Download the latest .exe from the Releases page. No installer required — just run it.
- Start SimTrace before or after launching your game.
- Select your game from the ⚙ config panel (top-right of the overlay).
- Drag the title bar to reposition; drag the bottom-right corner to resize.
- Click Save to persist your settings between sessions.
The overlay fades out when your cursor leaves it and reappears on hover.
Enable shared memory: (from the main menu) Options (top right) > System > Shared Memory and setting it to Project CARS 2
SimTrace accepts native UDP from both F1 25 and the 2026 Season Pack. The listen address and port are saved with the other settings. See the F1 UDP setup guide for direct and forwarded configurations.
Requires Rust (stable).
cargo build --releaseThe binary will be at target/release/simtrace.exe (Windows) or target/release/simtrace (other platforms).
Settings are saved to:
- Windows:
%APPDATA%\simtrace\settings.toml - macOS:
~/Library/Application Support/simtrace/settings.toml - Linux:
~/.config/simtrace/settings.toml