Knock Sound

You can tick the pen on the screen. And turn off the sound, can only vibrate.

During a boring meeting, you'll want to tick the knock-type ballpoint pen.

When that happens, this application is recommended. You can tick the pen on the screen. And turn off the sound, can only vibrate. Not to disturb those around.

Android compatible version :

1.6 or higher

Last Update (v1.0.1) :

Fixed expressions.