LapperSnapper is a lap-analysis app for karting and track days. It pulls sessions straight from your data logger, analyzes them on your phone, and shows you where the time is — right at the track, with no laptop and no waiting on a server.

What it works with

• AiM MyChron 5, 5S, and 6 — downloaded directly over Wi-Fi
• RaceBox GPS devices — live over Bluetooth, or imported from a file
• GoPro cameras that record GPS telemetry
• Your phone's own GPS — no hardware needed at all

Every source feeds the same analysis engine: track map and racing line, sector times, lap comparison, corner-by-corner coaching, and a live predictive HUD while you drive.

Key things to know

• It works offline. Analysis runs on your phone, not on our servers. You can use it in the paddock with no signal.
• No account is needed to record, import, or analyze sessions.
• The core app is free forever. A Pro subscription adds coaching on every corner, your full season history, the live predictive HUD, video overlay export, and cloud backup. See What's included in Free vs Pro.

Ready to try it? Start with Record your first session with just your phone.