Does exactly what the title says. Just vibrates the phone for as long as you want.
NOTE* I am noticing all the innuendos on the app, of which is no concern to the developers. But please be advised that this app was merely created to gain familiarity with the android development process. There are OTHER uses for it as J.J. on the comments page suggested, "...I'm actually using it to get my dog used to electronic clippers..."
Whatever the use for the app please enjoy.
Updated to work on Android 1.5