YouMetry by Youlook
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Supported sources · OBD-II

The engine has something to say too.

Your car’s OBD-II port delivers RPM, load, pedal position, temperatures. YouMetry logs them through a small Bluetooth adapter, and lays them on the video next to speed and lap time.

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What YouMetry reads

  • An ELM327-type Bluetooth Low Energy (BLE) OBD-II adapter, live — from the YouMetry mobile app or the desktop app’s Live mode.
  • .MF4 / .MDF logs (ASAM MDF 4 format) from data loggers.
  • OBD channels inside a RaceChrono export.
  • RPM, speed, gear, throttle, pedal, load, coolant, oil and intake temperatures, boost pressure, airflow, lambda, timing, fuel, battery voltage, torque.

How to do it

  1. Plug a BLE adapter into the OBD port (under the steering wheel). Models that work: Vgate iCar Pro, OBDLink CX, Veepeak BLE+.
  2. Open the YouMetry app on the phone, let it find the adapter, then tap REC — or START to run the lap timer as well.
  3. When you stop, the app writes a session file; send it to the computer next to your camera’s video.
  4. In YouMetry, open the video and the file: the app’s sync flash lines the two up automatically.

What you get

  • Rev counter, pedals, gear, temperature dials, boost pressure, battery voltage.
  • Sound alerts in the mobile app: a sound when RPM, coolant temperature or speed crosses your threshold.
  • All combined with position: OBD gives the engine, GPS gives the trajectory, YouMetry joins the two.

Good to know

  • Cheap old classic Bluetooth adapters stay invisible: you need a BLE model.
  • OBD-II gives no brake pressure or clutch on most cars: the brake shown is estimated from deceleration, and the app says so.
  • The number of channels and their rate depend on the car: the more you request, the slower each one gets.

Questions

Which OBD adapter should I choose?

A Bluetooth LE (BLE) adapter: Vgate iCar Pro, OBDLink CX or Veepeak BLE+. Classic Bluetooth models are not detected.

Does it work on a motorcycle?

Only if it has an OBD-II compatible diagnostic port, which is still rare. On a motorcycle, YouMetry relies instead on GPS and on the lean angle measured by the phone or camera.

See also

DJI drones and camerasSRT file or embedded telemetry: speed, altitude, flight in 3D. FPV: Walksnail Avatar and blackboxThe goggles’ OSD and the Betaflight/INAV log: battery, sticks, true horizon. GoProThe GPS and sensors already inside your MP4. Insta360The remote’s GPS and the gyroscope inside the .insv file. RaceChronoLaps, sectors, G-forces and OBD from your session, on the video. Lap Legend (Dauntless)Laps, G-forces and DauntlessOBD data, on the video. Paragliding (free flight)Your vario’s IGC flight: vario, glide ratio, wing in 3D. IGC fileFree flight’s own format: two altitudes, wind, air speed. Dragy, VBOX and GarminThe .vbo, CSV and FIT files of performance meters. Bike and e-bike (Bosch eBike Flow)Speed, power and cadence from the Bosch FIT; heart rate from a Garmin watch. GPX trackWatch, phone, bike computer: any GPS track. CarSpeed, G-force, OBD, lap timer and corner table. MotorcycleLean angle, cornering speed, lap timer. DroneAltitude, speed, battery and the flight replayed in 3D. Bike and e-bikePower, cadence, heart rate and ride summary. Hiking and runningHeart rate, pace, climb, figure over the 3D terrain. Ski and snowboardSpeed, gradient, detected runs, skier in 3D. SailingKnots, wind, point of sail, heeling sailboat in 3D. The mobile app: lap timer, OBD, Android Auto RaceRender alternative DashWare alternative Garmin VIRB Edit alternative

Several files can be combined in one project: position from one, engine data from another. See the comparison with other software.