What is the difference between accelerometer and gyroscope?

The accelerometer measures linear acceleration (movement) including gravity, showing which direction is "down" and detecting shaking or movement. The gyroscope measures rotational velocity (spinning), detecting how fast the device is rotating around each axis. Together, they provide complete motion tracking.

Why do I need to grant permission?

Modern browsers require explicit permission to access motion sensors for privacy and security reasons. Malicious websites could potentially track your movements or infer sensitive information. Granting permission allows this tool to read sensor data for testing purposes.

What do the X, Y, Z values mean?

X, Y, Z represent the three spatial axes. For accelerometer: X is left/right tilt, Y is forward/backward tilt, Z is up/down (gravity). For gyroscope: X is pitch (tilting forward/back), Y is roll (tilting left/right), Z is yaw (rotating like a compass). Values are in m/s² for accelerometer and degrees/second for gyroscope.

Why are my sensor values not changing?

Check that you granted sensor permissions. Some devices (especially older ones) may not have gyroscopes. Desktop computers typically lack motion sensors entirely. Also ensure your device is not in a case or mount that restricts movement detection.

Can I use this for web app development?

Absolutely! This tool demonstrates the DeviceMotion and DeviceOrientation APIs. Use these in your web apps for tilt controls in games, shake-to-refresh features, AR experiences, fitness tracking, and any motion-based interactions. The APIs work on most modern mobile devices.

Device Sensor Tester

Device Sensor Tester Overview

Visualize Gyroscope and Accelerometer data from your device.

Device Sensor Tester is a comprehensive motion sensor diagnostic tool that visualizes real-time data from your device's accelerometer (measuring acceleration forces) and gyroscope (measuring rotation rate) sensors, essential for debugging motion-based web applications and games. This tester displays live X, Y, and Z axis values for both sensors, showing how your device moves and rotates in three-dimensional space with real-time graphs and numerical readouts. Understanding device sensors is crucial for developing motion-controlled games, implementing shake-to-refresh features, creating augmented reality experiences, and building fitness tracking applications. The accelerometer detects linear acceleration including gravity (useful for detecting device orientation and movement), while the gyroscope measures rotational velocity (useful for detecting device rotation and angular movement). Sensor testing helps developers debug motion controls, users verify sensor functionality, and anyone understand how their device tracks movement. This sensor checker is invaluable for web developers building motion-based apps, game developers implementing tilt controls, AR/VR developers testing device tracking, and anyone experiencing sensor-related issues.

How to Use Device Sensor Tester

Open on a mobile device or tablet.
Grant permission for Motion Sensors if prompted.
Move your device around to see the X, Y, and Z values change.
Visualize the orientation in real-time graphs.
Test different movements (tilt, rotate, shake) to see sensor response

Frequently Asked Questions

What is the difference between accelerometer and gyroscope?: The accelerometer measures linear acceleration (movement) including gravity, showing which direction is "down" and detecting shaking or movement. The gyroscope measures rotational velocity (spinning), detecting how fast the device is rotating around each axis. Together, they provide complete motion tracking.
Why do I need to grant permission?: Modern browsers require explicit permission to access motion sensors for privacy and security reasons. Malicious websites could potentially track your movements or infer sensitive information. Granting permission allows this tool to read sensor data for testing purposes.
What do the X, Y, Z values mean?: X, Y, Z represent the three spatial axes. For accelerometer: X is left/right tilt, Y is forward/backward tilt, Z is up/down (gravity). For gyroscope: X is pitch (tilting forward/back), Y is roll (tilting left/right), Z is yaw (rotating like a compass). Values are in m/s² for accelerometer and degrees/second for gyroscope.
Why are my sensor values not changing?: Check that you granted sensor permissions. Some devices (especially older ones) may not have gyroscopes. Desktop computers typically lack motion sensors entirely. Also ensure your device is not in a case or mount that restricts movement detection.
Can I use this for web app development?: Absolutely! This tool demonstrates the DeviceMotion and DeviceOrientation APIs. Use these in your web apps for tilt controls in games, shake-to-refresh features, AR experiences, fitness tracking, and any motion-based interactions. The APIs work on most modern mobile devices.

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