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RaceCapture telemetry analysis — free, in your browser

LapLift reads RaceCapture sessions and plots exactly the channels you configured — GPS, accelerometer and gyro, and any CAN or OBD-II channels your unit logged. Upload a CSV/LOG or a .rcz and start comparing laps.

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Files LapLift accepts

CSV / LOG export
The RaceCapture app's data export — a Name|Unit|min|max header, then the data. Carries every channel your unit was configured to log.
.rcz session
The RaceCapture mobile app's compressed session file (a zipped export). Upload it as-is; LapLift reads the session structure directly.

What gets parsed

Speed (GPS)GPS positionHeadingLateral GLongitudinal GVertical GYawPitchRollThrottleBrakeRPMWheel speedsSteering %

RaceCapture is fully configurable, so LapLift plots exactly the channels your file contains. GPS speed and position are always there; the accelerometer/gyro channels and any CAN or OBD-II channels (throttle, RPM, wheel speeds, temperatures) appear when your unit logged them. Steering comes through as a percentage of lock. A phone-GPS .rcz session typically carries just speed, position and heading.

What you can do

Overlay a faster driver
Stack your lap on top of any lap shared with you. A time-delta trace shows exactly where you gain and lose, corner by corner.
See your line and corner speeds
Your GPS trace becomes a track map with the speed you carried through every corner, so you can see where the time really goes.
Auto-sync your video
One click lines GoPro or DJI footage up with your data. Scrub the trace and the video follows, frame-accurate — no nudging footage by hand.
Build a Theoretical Best lap
LapLift stitches your fastest sectors into one ideal lap, so you know what the session was actually worth.
See how you stack up
Compare against other drivers on the same track with crowd percentiles — where you rank overall and corner by corner.

Questions

What's the difference between the CSV and the .rcz?

The CSV/LOG is the data export with every configured channel; the .rcz is the mobile app's compressed session bundle. Upload whichever you have — both work.

Will my CAN channels (throttle, RPM, wheel speeds) show up?

Yes, if your RaceCapture was logging them. Because the unit is configurable, LapLift plots exactly the channels your file contains — GPS always, plus accelerometer, gyro and any CAN/OBD-II channels you set up.

My .rcz only shows speed and the map — why?

A .rcz recorded on phone GPS alone carries speed, position and heading. For G-forces and engine channels, log them on the RaceCapture unit and export the CSV/LOG.

Is it free?

Yes. Create an account, upload your RaceCapture session, and analyze it in your browser at no cost.

Free, in your browser. Nothing to install.

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