YouMetry by Youlook App Store
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. 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. Dragy and VBOXThe .vbo and CSV files of performance meters. GPX trackWatch, phone, bike computer: any GPS track. 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.