
Lapster Racing: GPS Lap Timer
Track day & kart, for RaceBox
0 ratings
Free
Rating summary
About
Lapster turns your RaceBox into a complete lap timer and telemetry system. And if you don't own one yet, your iPhone can time your laps too.
RACEBOX — ALL THREE MODELS
RaceBox Mini S, RaceBox Micro and RaceBox Pro. Connect over Bluetooth or Wi-Fi, pull the sessions stored on the device, and every lap is timed, mapped and saved automatically.
NO RACEBOX? USE YOUR PHONE
Start a session with your iPhone's GPS and get real lap times on any circuit. Live map, predictive delta, lean angle, and a separate 0-100 acceleration mode with its own personal bests.
EVERY LAP, IN DETAIL
• Replay any lap on the map at 1x, 3x or 5x
• Speed, position and time for every corner
• Put your lap next to a friend's and see where the time went
• Sector splits, top speed, G-forces and lean angle
TRACKS
Official circuits with verified records, plus tracks you build yourself — drop the start/finish line and sectors straight onto the map. Every track keeps a leaderboard of the riders on it.
TRACK DAYS
Find track days, book your spot, and read reviews from riders who were actually there — with their photos and lap times attached.
SHARE IT
Send a lap or a whole session with a link, post a story, or export a poster for Instagram. Your profile keeps every stat and badge you have earned.
MESSAGES
Direct and group chats with other riders, including voice messages.
ALSO INSIDE
• Import your existing rides from the RaceBox app (CSV)
• Weather recorded automatically for every session
• Your garage: cars and bikes, with photos
• Available in 14 languages
Free to use. Optional donations if you want to support development.
Lapster is not affiliated with RaceBox. RaceBox is a trademark of its respective owner.
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What's New in Lapster Racing
1.4.0
September 16, 2026
• The app now speaks 14 languages, including Arabic, laid out right to left • iPad: the lap screen keeps the map beside the analysis, and Corner Battle gains a corner rail • Progress reads your season on one track from lap times alone — pace, consistency, endurance • Haptics you can tune: full, essentials only, or off • VoiceOver now answers every button, gesture and control • Dozens of fixes across sessions, teams and the comment wall
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