Purple Sector

Analyse Harry’s LapTimer sessions in your browser

Export a Harry’s LapTimer session as VBO or CSV, open it in your browser and compare laps. Includes what a phone’s GPS rate can and cannot show.

  • .csv
  • .vbo
  • .gpx

By Purple Sector. Published . Reviewed .

Open your own file See a sample debrief
MyChron 5Queensland Raceway National
A MyChron 5 session open in Purple Sector: the Queensland Raceway National map with its six turns and the gap at each, beside the list of laps.
Shown: a real MyChron 5 session at Queensland Raceway National. A file from any logger Purple Sector reads opens in the same view.

How do I get the session file from Harry’s LapTimer?

Bring: the session exported as VBO (CSV also works)

On a computer

  1. Export the VBO from Harry’s LapTimer on your phone and send it to your computer.
  2. Open it here.

On a phone

  1. In Harry’s LapTimer, open “Lap List” and tap a lap from the session.
  2. Tap the share icon, set the scope to “Session” and the type to VBO (or CSV).
  3. Choose “Save to Files” (iPhone) or Downloads (Android).
  4. Back here, open your lap file and pick it from “Recents” (iPhone) or Downloads (Android).

Vendor instructions: Harry’s LapTimer documentation

What else should I know about the file?

Limits to know
  • A lap shared as Harry’s own .hlptr file opens too, with its position, speed and lap times; its OBD and g values are shown but not used for coaching, because the file does not say how they were measured.
  • A GPX opens too if you have one.
  • Harry’s LapTimer is a paid app, and which editions can export is not stated by the developer.
GPS rate

The recording needs GPS position at least once a second and a recorded speed channel for a corner debrief. Below 5 Hz, the AI debrief is limited to measured speed comparisons. Faster GPS can support more detail, but only where the recording provides the evidence. What GPS can and cannot show.

Is a phone’s GPS good enough for lap analysis?

It depends on the recording. GPS position at least once a second and a recorded speed channel can support a measured corner debrief. Below 5 Hz, the AI debrief is limited to measured speed comparisons. A faster external GPS receiver can provide more detail; each coaching claim still needs evidence from the recording.

What do I see once the file opens?

Lap 6 picked against lap 1: the gap to lap 1 at every turn on the map, T3 the largest at +0.87 s.
The gap to your best at every turn.
The map closed on T3, marked +0.87 s, with both laps' lines through the corner.
The corner that cost time, with both lines.
The AI Coach card for T3, +0.87 s: “Turn in about 2 m wider into T3 and get back on the throttle about 3 m sooner out of it.”
One card for that corner, with its numbers.

See how to read the speed and time difference in a worked lap comparison at Norwell, using a public sample recording and its stated evidence limits.

How to compare laps · Circuit maps

Next: Lap timer apps compared · Motorcycle lap timers compared

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