Open telemetry for track days.
Lap timing, live delta and post-session analysis on the phone you already carry. It works with no signal at the track, and it is free to download.
Starts on your phone’s GNSS. Pair a LapFlux Node for 20–25 Hz.
Glance while driving. Dig in after.
On track the screen shows where the lap stands, where it is heading and which sectors you have won or lost — big enough to read at 140 km/h, in gloves, in full sun. In the paddock every lap is there to take apart.
Find the time in your own laps.
Coach names the corners where the time goes — braking too early, late back on the throttle, carrying too little speed — and shows the traces behind every claim.
No track day needed.
Arm the timer, launch, come to a stop. Timing starts when the car actually moves — there is no button at the line — and every figure is measured in the same run.
Imperial preset too: 0–60, 0–100, 60–130 and 60–0 mph.
Build the Node yourself.
The Node gives the phone faster, steadier GNSS and motion data. Its measurement core is open — schematics, reference wiring and firmware — so you can build one on your own bench.
- u-blox NEO-M9N
- ESP32-S3
- Onboard IMU
- Bluetooth LE
- Battery management
No Node yet? LapFlux times laps on the phone’s own GNSS.
Firmware and hardware on GitHubNo Node yet? LapFlux times laps on the phone’s own GNSS.
Bring it to your next track day.
Free on iOS and Android.