A GPS logger for your car, and an app that shows where you lose time
A box on the dash logs your position up to 25 times a second, plus g-forces from a motion sensor. In the browser you then see the route, speed, a G-G diagram and every braking zone. No account and no cloud — the files stay with you.
Works in Chrome and Edge, also installed as an app and without internet.
From the drive to the chart
Switch the logger on and start a session — with the button or from your phone. Once the unit has a position fix, it opens a new file on the microSD card. Mark the finish line or a checkpoint with the marker button — the file keeps its number and the app uses it to time each segment.
After the drive, connect your phone or laptop over Bluetooth and pick a session from the list. The GPS file and the motion sensor file arrive together as one route. The transfer verifies a checksum and, if the link drops, resumes where it stopped. Over Bluetooth you can also change the GPS rate or the screen brightness.
The app does all the maths in the browser. It rejects position drift right after the first fix and “creep” while parked, so the distance does not grow while you stand still. Altitude noise does not add up to climbs that never happened.
What the app shows
- The route, two ways
- A bare trace on a metre grid or on an OpenStreetMap map, coloured by speed, g-force, altitude or GPS accuracy.
- Shared cursor
- Hover over the route — the charts show the same moment. Select part of a chart — the route greys out the rest.
- G-G diagram and events
- Every g-force sample, plus a list of the hardest braking and cornering events with time and speed.
- Share image
- A 1080 × 1350 card with the route coloured by g-force, a speed profile and your numbers, rendered on the phone.
- Export
- The original CSV files, KML for Google Earth and GPX for Strava or Garmin.
Features
StintCore
- Position up to 25 times a second, several satellite systems
- G-forces and rotation from a motion sensor, ±4 g
- Mount it any way you like — the unit works out its orientation itself, from standstill and the first accelerations
- Records to microSD in an open CSV format
- Live view in RaceChrono (Bluetooth), built-in battery
The app
- In the browser, offline too; no account and no server
- Route, G-G, laps and sectors, session comparison, driving style
- Share cards, CSV / KML / GPX export
- Session download over Bluetooth (Chrome, Edge)
- Library backup in a single file
Buy the device
Sales have not started yet — variants and prices will appear here.