MotionRecord – Measure Motorcycle Lean Angle with a Smartphone IMU App
MotionRecord taps the 6 sensors in your smartphone and records 100× per second. Lean angle, g-forces, your line — measured, not guessed. No expensive sensor. Just your phone.*
YOU KNOW WHERE YOU RODE. BUT NOT HOW.
Your navigation app stores one point per second on the map. What happens in between — leaning, braking, accelerating — stays invisible.
What feels like 45 degrees of lean is often closer to 30. Without measurement, all you take home is a hunch.
Your smartphone has every sensor it takes built in. MotionRecord records them and shows how you really ride.
YOUR COCKPIT. YOUR STYLE.
Three new recording cockpits: APEX-R, CIRCUIT and LAB. Pick your style on first launch — and switch anytime with a swipe, even mid-ride.
Rolling out on iPhone first — Android to follow.
WHAT GPS CAN'T SEE
Measuring motorcycle lean angle and G-forces: GPS only gives you position — MotionRecord additionally captures gyroscope, acceleration and IMU sensor data in real time.
| Situation | GPS (1 Hz) | MotionRecord (100 Hz) |
|---|---|---|
| You brake before the corner | Sees: speed dropping | Captures: braking force as a G-value, brake point as a data point |
| You turn in | Sees: heading changing | Captures: steering input, turn-in rate as angular velocity |
| You drop into the lean | Estimates: change of direction | Computes: lean angle from gyroscope data, 100× per second* |
| You hit the apex | Sees: roughly the middle | Computes: peak lean, peak G as a data point* |
| You get on the gas on exit | Sees: speed rising | Captures: acceleration force, stand-up moment as a G-value |
| Riding through a tunnel | Loses the signal | Keeps recording — the IMU needs no GPS |
WHAT MOTIONRECORD DOES
Lean Angle from the Gyroscope
Computed from your smartphone's IMU sensor data
The gyroscope delivers up to 100 data points per second. MotionRecord uses them to compute an estimated roll angle — a far higher sampling rate than GPS alone. The app is currently in beta.*
Live Dashboard
Lean-angle gauge with 5 color zones
Real-time gauge with a 7-segment readout, peak-hold and color zones from 0° to 55°. The screen changes color with your lean angle: green → yellow → orange → red.
Tour Summary
Every metric after the ride
Max lean, distance, duration, elevation gain, corner count and peak G-force — all at a glance. With map and share button.
ALL SCREENS
6 sensors.
One phone.
Up to 360,000 data points per hour. Butterworth-filtered, auto-calibrated, GPS + IMU fused. Values depend on your device.
Accelerometer
Braking force, G-forces, pothole detection — sampling rate depends on the device
Gyroscope
Roll-angle computation, turn-in rate, stability — sampling rate depends on the device
Barometer
Elevation profile, pass detection, tunnel detection — accuracy depends on the device
Magnetometer
Heading, bridge detection — sampling rate depends on the device
Orientation
Rotation vector (computed) · absolute orientation, drift correction — sampling rate depends on the device
GPS
Position, speed, route — accuracy depends on reception and device
* The math: 100 samples per second × 3,600 seconds = 360,000 data points per hour per sensor channel — at maximum sampling rate; actual rate depends on your device.
MEASURED.
NOT GUESSED.
| App | GPS | Accel. | Gyro | Baro | Fusion |
|---|---|---|---|---|---|
| Calimoto | |||||
| Motobit | |||||
| Komoot | |||||
| Relive | |||||
| RideLink WingMan Pro | Basic | ||||
| RaceBox | ext. | ext. | Basic | ||
| ★ MotionRecord |
RideLink WingMan Pro is a dedicated tracker with a 3-axis gyroscope (no smartphone needed). RaceBox is an external device (from ~$200). MotionRecord uses the smartphone you already carry.
* Comparison based on our own test recordings (GPX/JSON) with AI-assisted analysis — no lab testing, no manufacturer involvement. → Technical test report
FROM TODAY
TO THE VISION
Phase 1
- Real lean angle from the gyroscope
- G-forces (longitudinal + lateral)
- GPS + IMU fusion
- Barometer elevation profile
- Signal processing (Butterworth, auto-calibration)
Phase 2
- Braking-point analysis (in development)
- Trail-braking detection
- Turn-in & stand-up rate
- Corner Score V2 (IMU-enhanced)
- Riding-style fingerprint (racer/tourer/technician)
Phase 3
- Road-surface detection (FFT)
- Pothole detection
- Suspension analysis
- Fatigue detection
- Racing-line comparison V1
Phase 4
- Community road map
- AI-based riding-style coaching
- Engine RPM from vibration
- Predictive route suggestions
- Real-time coaching (HUD)
NO EXPENSIVE SENSOR.
JUST YOUR PHONE.
Free. No subscription. Start right away.
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