A free app for Android, by Vibration Research Corporation.
Vibration Widget is a home screen widget that allows you to toggle the vibration mode of your phone. It is a simple application, so it does not have any fancy UI. You will only be able to turn the vibration mode on and off.
To use this application, you need to install it on your Android phone or tablet. You can find the installation file on the Play Store.
How to install it?
First, you need to open the app, then you will see a list of options on the screen. Click on the Install button, and you are done.