LapperSnapper

Find the time you're leaving on track — before your visor's back down.

LapperSnapper turns your GPS and logger data into the one answer that matters: which corner cost you, and why. Everything runs on your phone, between runs. No laptop, no upload, no waiting on a server.

CORNER-BY-CORNER, NOT JUST A LAP TIME
• Auto corner detection — every turn found from your GPS line, no setup, any track
• Per-turn time lost, ranked by cost, with the apex-speed deficit vs your best
• Speed and running delta by distance — two laps overlaid, synced to the map
• The g-g traction circle — how much grip you're actually using, from GPS alone
• Race Engineer coaching that tells you which corners to work next session

BRING YOUR OWN GEAR — ONE ENGINE BEHIND ALL FOUR
• AiM MyChron 5 / 5S / 6 — straight off the logger over WiFi, no cable to a PC
• RaceBox — drop in a .ubx capture
• GoPro — load the .mp4, LapperSnapper reads the GPMF telemetry track
• No hardware at all — just your phone's GPS, with a live predictive-timing HUD while you drive

EVERYTHING ELSE IN ONE APP
• Racing line on the map, colored by speed
• Ultimate lap and sector times
• Per-channel charts — RPM, speed, and more
• Video overlay player, plus export a lap clip with telemetry burned in (audio kept)
• Per-track history and personal bests
• Share any lap as a link — no upload, no account, opens in any browser

YOUR DATA NEVER LEAVES YOUR DEVICE
Analysis happens on your phone, not our servers. No account required for the free app, and it keeps working with no signal in the middle of a paddock. That's not a setting — it's how it's built.

FREE, FOREVER
Import from any source, full session analysis, lap comparison, the traction circle, and coaching on your biggest time-loss corner — no account, no card.

GO PRO WHEN YOU'RE CHASING TENTHS
Coaching on every corner, unlimited history, the live predictive HUD, video export, and cloud sync across devices. Try it free for 14 days — no card to start.

Built by racers tired of waiting to find their time.

"AiM", "MyChron", and "Race Studio" are trademarks of AiM Tech S.r.l. RaceBox and GoPro are trademarks of their respective owners. LapperSnapper is independent and unaffiliated.