Trakio

Lap timing accuracy has been improved to better handle unstable GPS, give it a try ! Missing your favorite track? Send a request and I’ll add more circuits on demand.

trakio — GPS Lap Timer for Track Days

trakio is a focused lap timing app built for drivers who want clean data and zero distraction on track day. Open the app, select your circuit, and drive — trakio handles the rest.

Pre-Session Checklist Before you head out, trakio confirms you're ready: GPS signal strength, battery level, and start/finish line configuration. No surprises on your out lap.

Auto Circuit Detection trakio uses your location to automatically identify your nearest circuit and pre-select it for you. Check the weather conditions and wind at the track, then name your session and go.

GPS Lap Timing Laps are timed automatically using your iPhone's GPS as you cross the start/finish line. Every lap is recorded with millisecond precision — no buttons to press while driving.

Session Analytics After each session, dive into your data:

• Best lap time
• Top speed
• Lap consistency score
• Theoretical best lap (your best sectors combined)
• Lap delta trend — see if you were improving or fading
• Full lap-by-lap breakdown with gap to your best

GPS Trace on Satellite Map Each session shows your smoothed GPS line overlaid on a satellite map of the circuit, with start/finish and sector lines marked.

Session History Your complete session history is stored on-device. Search and filter by all sessions, recent, or your best runs. Rename sessions, log your car, add notes, and track your progress across every visit to every circuit.

Share Your Results Share your session highlights as an Instagram Story — choose a template, add a background photo, and post your best lap straight from the app.

Designed for the Track

• Dark mode for early morning sessions
• Available in English and Japanese
• All data stored locally on your device — no account required