Free Gyroscope Test - Phone & Tablet Orientation Sensor Check

Gyroscope Test

Live alpha, beta, and gamma orientation readout with a 3D cube that rotates exactly with your device, a compass ring for alpha, and a calibrate-to-zero button — verify the rotation sensor without installing an app.

Live orientation readout

Not started

On iOS 13+ you must tap "Start" to grant orientation permission.

Alpha

0°

compass / Z-axis

Beta

0°

front-back tilt

Gamma

0°

left-right tilt

0°

3D orientation cube

FRONT

BACK

RIGHT

LEFT

TOP

BOTTOM

Tilt, turn, or rotate your device — the cube follows in real time. "Calibrate to zero" snaps the cube's current orientation to the identity so you can measure relative rotation from a custom starting point.

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Gyroscope Test guide

How to use the Gyroscope Test accurately

The browser's DeviceOrientationEvent exposes three rotation values — alpha, beta, gamma — derived from a fusion of the phone's gyroscope and magnetometer. Alpha is rotation around the vertical (Z) axis and reports your compass heading from 0 to 360 degrees.

01 What The Gyroscope Test Measures The browser's DeviceOrientationEvent exposes three rotation values — alpha, beta, gamma — derived from a fusion of the phone's gyroscope and magnetometer.

02 Gyroscope vs. Accelerometer: What Is The Difference An accelerometer measures linear acceleration — how fast the device is speeding up or slowing down in a given direction, including the 9.8 m/s² constantly pulling it down.

03 Why Alpha Might Not Work Everywhere Alpha requires a magnetometer (compass chip) in addition to the gyroscope, because true north must come from somewhere. Some phones, tablets, and most desktops do not have a magnetometer — on those devices alpha may report 0...

04 iOS Orientation Permission Starting with iOS 13, Safari requires an explicit user-initiated grant before DeviceOrientationEvent fires. Our "Start" button calls DeviceOrientationEvent.requestPermission(), which is the only way to ask.

gyroscope test phone gyroscope check deviceorientation api alpha beta gamma readout tablet rotation sensor Gyroscope Test

Alpha requires a magnetometer (compass chip) in addition to the gyroscope, because true north must come from somewhere. Some phones, tablets, and most desktops do not have a magnetometer — on those devices alpha may report 0, drift continuously, or never update.

Gyroscope Test FAQ

Common gyroscope test questions

What do alpha, beta, and gamma mean?

Alpha is rotation around the vertical axis (0-360° compass heading). Beta is front-to-back tilt (-180 to 180°, zero when flat). Gamma is left-to-right tilt (-90 to 90°, zero when flat).

What is the difference between gyroscope and accelerometer?

Accelerometer measures linear acceleration (including gravity). Gyroscope measures angular velocity. Modern phones fuse both (plus the magnetometer) to report drift-free orientation, which is what this test reads.

Why does alpha stay at 0 on my tablet?

Alpha requires a magnetometer (compass chip). Many tablets and most laptops lack one, so alpha reports 0 or never updates. Beta and gamma rely only on the gyroscope and work on every phone.

What does Calibrate to zero do?

It captures the current orientation as the new reference point so the cube reads 0/0/0 from that position. Useful when the device is sitting in a mount or holder and you want to measure rotation relative to that start.

Checklist

Utility checks to confirm

What The Gyroscope Test Measures The browser's DeviceOrientationEvent exposes three rotation values — alpha, beta, gamma — derived from a fusion of the phone's gyroscope and magnetometer.
Gyroscope vs. Accelerometer: What Is The Difference An accelerometer measures linear acceleration — how fast the device is speeding up or slowing down in a given direction, including the 9.8 m/s² constantly pulling it down.
Why Alpha Might Not Work Everywhere Alpha requires a magnetometer (compass chip) in addition to the gyroscope, because true north must come from somewhere. Some phones, tablets, and most desktops do not have a...