Mobile app · driving telemetry
LeftLane
A precision driver’s log — every drive, measured.
v1 · launching August 2026
The problem
Most driving apps give you vibes — a needle that looks fast and a screenshot you can’t trust. LeftLane is for the people who actually pay attention: drivers who want real numbers from a drive, not a highlight reel. The hard part is turning a phone’s noisy GPS and motion sensors into telemetry you can stand behind — accurate, repeatable, and honest about its own limits.
What it does
LeftLane records a driving session and turns raw sensors into clean, trustworthy telemetry. It fuses 10 Hz GPS, 100 Hz motion, and barometric altitude through an on-device Extended Kalman Filter into a smooth 30 Hz stream — with per-vehicle mount calibration so the G-force numbers are real, not noise.
Three ways to record: Free Drive (manual), Challenge (it routes and times you to a computed finish line against your personal best), and Hands-Free (the phone stays in the mount and starts itself). Every session gives live speed, an auto-detected sub-second 0–100, max G, distance, elevation, and hard-accel / hard-brake timelines.
Sessions live in The Garage, one per vehicle, with personal bests. You can share a drive live with a spectator view, and prove a result with an HMAC-signed share-card — because screenshots lie and cards don’t. It’s built privately, too: on-device licence-plate blur, biometric lock, exportable data, real account deletion, and an offline buffer that survives tunnels.
Key features
Built into the system.
Three recording modes
Free Drive, Challenge — routed and timed to a computed finish line vs. your best — and Hands-Free auto-start. Press start, or don’t.
Real telemetry, fused on-device
10 Hz GPS + 100 Hz IMU + barometric altitude through an Extended Kalman Filter into a smooth 30 Hz stream, with per-vehicle mount calibration.
Metrics that mean something
Live and max speed, auto-detected sub-second 0–100, max G, distance, elevation gain, and hard-accel / hard-brake event timelines.
The Garage
Every session belongs to a vehicle, each with its own personal bests — a real logbook, not a feed.
Live share & verified cards
A spectator view with a QR code and viewer count, plus HMAC-signed result cards. Read the needle, not the screenshot.
Built thoughtfully
On-device licence-plate blur, biometric lock, exportable data (JSON / GPX), real account deletion, and an offline buffer that survives tunnels.
02 Inside the app
Every screen, measured.
Live telemetry you can trust, results you can prove, and a garage that remembers every personal best.
// DRIVER HONORS · BRONZE → PLATINUM
20 achievements, earned — never bought.
Read the needle, not the screenshot.
Visit leftlane.appApp
On-device
Backend
Data
Telemetry, not vibes. The visuals here are rendered in LeftLane’s own instrument-cluster identity — its loud voice, not the studio’s calm one. A paid app with a subscription, launching v1 in August 2026.
Keep looking