RaceChrono analysis

RaceChrono data analysis on your computer

RaceChrono times your laps on the phone. To analyse them on a computer, export the session as a .rcz file (or in VBO) and open it in LapViz Studio: the laps of RaceChrono are kept, overlay them, read your channels, then replay the session in 3D on the satellite view of the circuit.

Open a file in Studio Replay it in 3D

Lap comparison software: telemetry, delta time and racing line on the map

3D replay on the satellite view, with the ghost of the best lap

What LapViz reads

The .rcz session file of RaceChrono, read by your browser.

Laps of RaceChrono, kept as they are
GPS position, speed, heading and altitude
Sessions with external devices or OBD: not read from the .rcz yet, export them in VBO

Laps on the known circuits

LapViz calculates the laps from the GPS track, on the circuits it knows.

Laps and sectors comparable with the other drivers of the circuit
Rolling best and ideal lap from the best sectors
A missing circuit can be submitted from the circuits page

Beyond the phone screen

The analysis of a computer.

Overlay of laps and sessions, with the delta
Computed channels, scatter and G-G diagram
On-board video synchronized with the data
3D replay against the ghost of your best lap or of another driver

From RaceChrono to LapViz

Export the session from the app, then open the file on any computer.

In RaceChrono, open the session and export it as a .rcz file (or in VBO)
Send the file to your computer: e-mail, cloud drive or cable
Open LapViz Studio and drop the file
Drop it on the 3D replay page to watch your laps on the satellite view
Create a free account to keep the session and appear on the leaderboard of the circuit

Try it now, without an accountFree

Drop a file of your logger or lap timer: nothing to install, no sign-up.

LapViz Studio

The analysis in your browser: the file is read on your computer and is not uploaded.

Your laps overlaid, from several sessions and drivers, with the delta
Every channel of the logger, by time or by distance
Sectors, rolling best and ideal lap, track map on the satellite view
On-board video synchronized with the data

Open a file in Studio

3D replay

Your laps on the satellite view of the circuit, like in a racing game. The file is converted to be replayed, not kept.

Every lap against the ghost of your best lap
A second file as the ghost: race against a team-mate or a rival
Chase, onboard and helicopter cameras, speed, revs and live gap
The sound of the engine, following the revs of the session

Replay it in 3D

Keep your sessions with a free account

Import your files into LapViz to find them everywhere and compare yourself with the others.

Every session kept, on the web and in the LapViz app
Leaderboards per circuit and category
Corner by corner analysis of every lap
Sessions shared with your coach or your team

Create a free account

Frequently asked questions

How do I analyse RaceChrono data on a PC?

Export the session as a .rcz file from RaceChrono, then drop the file in LapViz Studio, in the browser of a PC or a Mac: free, nothing to install.

Which RaceChrono export should I choose?

The .rcz session file: it keeps the laps of RaceChrono. A session recorded with external devices or OBD is not read from the .rcz yet: export it in VBO, which keeps the other channels. GPX only has the position, the speed and the altitude.

Are the laps of RaceChrono kept?

Yes, from the .rcz file: the laps of RaceChrono are kept as they are. On a circuit known by LapViz, the laps are also calculated from the GPS for the leaderboards. The VBO and GPX exports have no laps: LapViz calculates them on the circuits it knows.

Why is my circuit not found?

Without laps in the file, LapViz calculates them on the circuits it knows only. A missing circuit can be submitted from the circuits page.

Does LapViz replace RaceChrono?

No. RaceChrono times your laps on track, LapViz analyses them afterwards. To time your laps with an app of LapViz, there is the LapViz app.

Is it free?

Yes. The Studio and the 3D replay are free and work without an account; the LapViz account is free too.