Local-first racing telemetry

Find the lap time
hiding in your data.

TRACE records your driving, aligns every lap by distance, and shows where time was gained or lost—in a workspace made for drivers, not data engineers.

Download for Windows View source

Windows 10/11Assetto Corsa supportedNo account requiredMIT licensed

TRACE // COMPARELOCAL SESSION

LIVE DELTA−0.422sahead

01CAPTUREDrive or AC playback

02COMPAREDistance-aligned laps

03UNDERSTANDInputs, line, and corners

04SHAREPortable .trace sessions

THE QUICK ANSWER

See what changed.
Know what to try next.

TRACE turns raw simulator telemetry into synchronized, approachable evidence. It does not pretend a heuristic is a coach—and it never hides the underlying data.

01 / RECORD

Capture the whole drive

Record live driving or telemetry while Assetto Corsa plays a replay. Available laps, sectors, inputs, tyres, fuel, and native source data stay together locally.

Replay files must be played through AC

02 / COMPARE

Compare on one axis

Speed, throttle, brake, gear, steering, line, and cumulative delta remain synchronized as you seek or zoom through the lap.

Reference vs. analysed lap

03 / ANALYSE

Focus on the corners

Deterministic heuristics highlight measured differences in braking, minimum speed, and throttle so you can inspect the underlying telemetry yourself.

May be incorrect · not coaching advice

04 / SHARE

Bring another driver's session

Compact TRACE packages preserve attribution, laps, telemetry, and an explicitly confirmed setup for inspection and comparison on another machine.

One file · no separate database or Arrow file

A SESSION, NOT A SPREADSHEET

Everything from the run,
kept in context.

Review a long race without turning the session page into a wall of rows. Open any lap for its recorded telemetry and the fuel, tyre, validity, or sector evidence the simulator made available.

✓ Searchable sessions, names, tags, and driver attribution
✓ Fastest laps, saved comparisons, and theoretical best
✓ Compatible setup matching and readable AC setup differences
✓ Missing or uncertain simulator data stays explicit

FROM TRACK TO ANSWER

Three steps. No telemetry degree required.

Record

Open TRACE, start Assetto Corsa, then drive or play a replay at normal speed. TRACE stores completed sessions locally.

Choose a reference

Use your fastest lap, a lap from an imported friend's session, or one of TRACE's compatible suggestions.

Follow the difference

Scrub once across every graph and the track map. Zoom from the full lap down to a sector or corner.

OPEN BY DESIGN

Your laps belong
to you.

TRACE is local-first, simulator-agnostic at its core, and released under the MIT licence. Recording and analysis work without an account or cloud dependency.

git clone https://github.com/keystroke-tools/TRACE.git

Explore the repository ↗

LOCAL FIRST: Your complete archive stays on your machine.
EVIDENCE BASED: Measured facts stay separate from heuristics.
SIM AGNOSTIC: Simulator-specific data ends at the adapter boundary.
PORTABLE: Share useful telemetry without sharing your database.

TRACE v0.3.1

There is time
in the lap.

Download the latest Windows build and start recording. Assetto Corsa is the supported simulator today; more independent simulator adapters are planned.

Download latest release ↘Read the documentation

Windows 10/11 · x86-64 portable executable · No installer yet