SPIN.

sensors idle

Turn rate — how fast you're turning

0.0

degrees / second

peak 0 °/s

Angular acceleration

deg / s² — derivative of turn rate

peak 0 °/s²

Angular jerk

deg / s³ — derivative of acceleration

peak 0 °/s³

Last 15 seconds

turn rate °/sangular accel °/s²

Compass

—°

total turned 0°

Gyroscope — rotation by axis

axis	rate °/s	accel °/s²
yaw (z)	0	0
pitch (x)	0	0
roll (y)	0	0
total spin	0	0

Accelerometer

	m / s²
linear (no gravity)	0
including gravity	0

How it works: the compass gives your heading; the change in heading over time is your turn rate. Its derivative is angular acceleration, and the derivative of that is angular jerk — each level is smoothed so the numbers stay readable. The gyroscope table shows the raw spin around each phone axis. Works best in Chrome on your phone; iOS asks permission when you tap Start.