GPS lap timing for track days

Every lap.
Every millisecond.
Everyone you ride with.

Pair a RaceBox, hit the track, and every session records itself — laps, sector splits, deltas, speed and lean, down to the millisecond. Then compare lines with the people you actually ride with.

Get the iOS app Get Started

Free for riders — forever

V-max254 km/h
S/F · Best lap1:46.912
Sector 241.070

Mugello Grand Prix

2,240circuits in the library
97countries
28,308corners mapped
25 Hzposition fixes per second

What it does

Timing that runs itself

Cross the start/finish line and the lap is already timed. Sector splits, best-lap highlights and live deltas — no buttons, no beacons, no trackside kit.

Lapster dashboard: a row of rider stories above a session list, each session showing its lap time, lap count and a red best-lap marker.

Telemetry you can actually read

25 position fixes a second. Replay a lap on the map, put two laps side by side, and see the exact corner where the time went.

Lap replay in Lapster: a satellite map with three riders' racing lines overlaid, delta pills, and a three-rider speed chart below.

2,240 tracks, or draw your own

Browse circuits in 97 countries. Riding somewhere that isn't listed? Drop a start/finish line and sectors on the map and publish it for everyone else.

Track detail for Pertamina Mandalika in Lapster: a satellite aerial of the circuit, an Official badge, and the current track record.

Lend your tracker, keep the laps straight

Hand your RaceBox to a friend for a session, then hand them the session. Ownership moves with it, so every lap sits on the profile of whoever rode it.

RaceBox Mini S 1 tracker · 2 riders
L1 2:11.90 You
L2 2:09.56 You
Tracker handed over
L3 2:10.44 @super_tyler
L4 2:08.97 @super_tyler

The session now belongs to whoever rode it

The people you ride with

Driver profiles, teams, and a feed of who's out today. Follow riders, message them, and get told the moment someone takes your personal best.

A Lapster rider profile: a cover photo of a rider in leathers beside a sportbike, and a grid of their riding stats.

Something worth posting

Every day on track becomes a shareable poster — best lap, top speed, total laps — sized for Instagram and exported straight from your phone.

July 17, 2026 Pertamina
Mandalika
2:09.56Best lap
155Top speed
17Laps
48:20On track
Lapster.
Hardware

Works with your RaceBox

Don't have one yet? Get a RaceBox

No RaceBox yet? Start with your phone.

Lapster can time laps from the iPhone's own GPS. It is coarser than a 25 Hz tracker, but enough for real lap times on your first track day — add a RaceBox when you want the detail.

The RaceBox Mini S: a small matte-black GPS puck with the red RaceBox logo on its face.

RaceBox Mini S

Bluetooth

Records live while you're on track.

The RaceBox Micro: a bare red circuit board with a GPS antenna module and a push button.

RaceBox Micro

Bluetooth

Records live while you're on track.

The RaceBox Pro: a wedge-shaped black unit with a display showing a running lap time.

RaceBox Pro

Wi-Fi

Download sessions after you ride.

Already have sessions in the RaceBox app? Import the CSV and keep your history.

How it works

  1. 01

    Connect

    Pair your RaceBox over Bluetooth or Wi-Fi in the Lapster app.

  2. 02

    Ride

    Go out. Sessions and laps record themselves while you're on track.

  3. 03

    Compare

    Replay the lap, stack it against your best, and share it.

Price

Free for riders. Forever.

No subscription, no trial clock, no card on file. The one number in Lapster that will never change.

Ready for a faster lap?

Free for riders — forever. Bring your RaceBox and your friends.

Get Started

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