AbraCalc

Vibration API Tester

Test the Vibration API on your mobile device with custom patterns.

Embed this tool on your site

How to use this tool

  1. Open this page — it runs instantly in your browser, no signup or install.
  2. Allow any permission prompt if asked; everything stays on your device.
  3. Use the on-screen controls — results update live.

Test the Vibration API on your mobile device with custom patterns.

Frequently asked questions

Which browsers support the Vibration API?
Chrome on Android is the main supported platform. Firefox for Android also supports it. Safari (iOS) does not support the Vibration API.
How do vibration patterns work?
Pass an array of numbers: alternating on-durations and off-durations in milliseconds, e.g. [200, 100, 200] = buzz-pause-buzz.