Question 1

How does the accelerometer tester work?

Accepted Answer

It uses the browser DeviceMotionEvent API to read your device's built-in accelerometer sensor and display the X, Y, Z acceleration values in real time.

Question 2

Does it work on desktop computers?

Accepted Answer

Most desktop computers don't have accelerometers, so the tool works best on phones and tablets. On desktop, the sensor will show no data.

Question 3

Is my data sent anywhere?

Accepted Answer

No. All sensor readings stay in your browser. Nothing is uploaded to any server — 100% private.

Question 4

Why do I need to grant permission on iOS?

Accepted Answer

iOS 13+ requires explicit user permission before a web page can access motion sensors. Tap the button and allow access to start reading data.