Calibrated to your bike
Tap Reset Angle once and the mounted phone becomes zero. Slope, lean and g-force are read in your vehicle’s frame.
Tripper
Ride telemetry
Introducing Tripper
A telemetry logger for motorcycles, bicycles and cars. Mount it, tap Start, and ride.
Built with SwiftUI, CoreMotion and MapKit. No account. No cloud. No tracking — every ride stays on your device.
Motorsport-grade g-force
Braking, acceleration and cornering in the horizontal plane, with pothole jolts filtered out.
Entirely yours
No account, no cloud, no analytics, no third-party SDKs. Rides leave your device only when you export them.
Most apps measure motion in the phone’s frame, which means little when the phone is clamped to your bars at an angle. Tripper measures it in your vehicle’s frame, so level ground reads zero degrees however the phone sits in its mount.
Everything the ride did,
recorded honestly.
Built to be used at speed
Pause-proof controls
While recording, the only centre button is Pause. Finishing takes two deliberate steps.
Records with the screen locked
GPS and motion keep logging in your pocket; pause, resume or mark from the Dynamic Island and Lock Screen.
Markers for video sync
Drop a timestamped marker — a clap, a landmark — to line telemetry up with action-cam footage.
Follow past rides
Overlay previous tracks on the live map, each in its own colour.
What it records
Route, speed, distance, heading
GPS at navigation accuracy. Elevation from the barometer fused with GPS.
Grade, slope and lean
Road grade over a rolling window; slope and lean in your vehicle’s frame.
G-force and heart rate
Sustained peaks in the horizontal plane; heart rate from Apple Watch. Motion sampled at up to 100 Hz.
Watch the ride back
Full-screen replay
The live dashboard, replayed, with every value read from the ride.
1× to 32×
Scrub or play. Values are interpolated between samples, so a 1 Hz ride plays back as motion.
Charts
Speed, elevation and heart rate, with distance, moving time, average and top speed, elevation gain and peak g.
Your data, in usable formats
CSV
One row per sample, shaped for overlay tools like DashWare and Telemetry Overlay.
GPX 1.1 and .trip
GPX with g-force, slope, grade and heart rate per point; .trip keeps everything losslessly.
Import too
Bring rides in from .trip, GPX, KML or CSV; speed, distance, heading and grade are derived for foreign tracks.
Start, pause and mark from your wrist
A dashboard on your wrist
Speed ring, running clock, altitude, distance and live heart rate.
Wakes by itself
Starting a ride on the phone starts the watch — no need to open the app there.
Runs as a workout
The dashboard is on screen when you raise your wrist, and the ride credits your activity rings.
Ready to ride?
Mount your phone, tap Start, and every metre is yours. No account. No cloud.
Requires iOS 26 or later · Apple Watch requires watchOS 11 or later