Track-day telemetry, forged simple

Forge
faster laps.

LapSmith turns your phone into a race engineer. Live timing on track, corner-by-corner audio coaching against your own best lap, and broadcast-style video overlays — synced automatically from GPS, engine and camera data.

  • 25HzGPS telemetry
  • ±0.01spredictive lap timing
  • 4+devices, one app
9:41● REC
1:19.24
−0.38
Predicted1:18.86
Lap4
Speed118 mph
GPSStrong

What's in the toolbox

Everything between you
and your next personal best

Live telemetry & predictive timing

Lap time, delta to your best, predicted lap and speed — live on your phone, big enough to read at 120 mph.

Session analysis & lap compare

Scrub through every lap, overlay speed and braking traces against your best, and see exactly where the time went.

Video overlays, auto-synced

LapSmith matches your GoPro footage to GPS and engine data automatically, then exports broadcast-style overlay videos ready to share.

Corner-by-corner audio coaching

A voice in your helmet that knows your best lap. Brake later, turn in earlier, carry more speed — cued before the corner, not after.

Your whole rig, one app

RaceBox GPS, OBD engine data, GoPro and heart-rate sensors connect side by side — with clear status for every device before you roll out.

CarPlay on the dash

Lap time, delta and session status on your car's own screen — phone mounted or pocketed, eyes where they belong.

Race procedure

Three steps to the grid

  1. 01

    Connect your gear

    Pair your RaceBox, OBD adapter and GoPro once. LapSmith remembers your rig and checks it's ready before every session.

  2. 02

    Drive

    Laps detect automatically at the start-finish line. Live timing on screen, coaching in your ears, everything recorded.

  3. 03

    Review, coach, share

    Compare laps corner by corner, find the time, and export overlay videos that look like they came off a race broadcast.

On the dash

Timing where your
eyes already are

With CarPlay, LapSmith puts lap time, predicted lap, delta and data quality on your car's built-in display. No suction mounts, no glancing down — just the numbers that matter, at a glance.

LapSmith live session on a CarPlay display showing lap time, predicted lap, delta and speed

Ready to find time?

LapSmith is in the final shakedown laps. Leave your email and be first on the grid.

No spam. Just the green flag.