Karting, track days, motorbikes
See where you lose time.
Drop the file from your data logger, lap timer app or GoPro: your laps, your lines and a 3D replay, in your browser. Free, nothing to install.
Create a free account →A real session, open to everyone
Best lap, ideal lap, every corner and the gain plan, then the lap in 3D against its ghost. No account needed.
Everything you need to go faster
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Your phone is a lap timer
Coming soon: the free LapViz app finds the circuit, times every lap and sector, shows a live predictive delta against your best lap and says your time at the line.
Discover the app → -
Every laptimer, one place
AiM MyChron, Alfano, Unipro, GoPro, GPX, RaceRender, CSV and the LapViz apps: send your files as they are, LapViz recognizes the format.
Supported formats → -
Understand every lap
Ideal lap, mini-sectors, corners, braking points, speed and G-force traces: see where the time is lost and what to change at the next session. Ask your questions in ChatGPT or Claude too, free with the LapViz connector.
Ask in ChatGPT or Claude → -
Circuit leaderboards
Lap records per category, corner guides and the progress of the drivers on each karting and racing circuit.
Browse the circuits → -
3D replay and video overlay
Replay your session in 3D on the satellite view of the circuit, or add telemetry gauges to your on-board video.
Try it with your file → -
Teams, coaches and competitions
Share your sessions with your coach, follow your team-mates and run time attack competitions on any circuit.
Who is it for?
Also available: try our free LapViz Stopwatch
for collaborative live timing
Every shared session has its live timing page on Open Live Timing: the pits, the family and the fans follow it in any browser. See an example of live timing →