Use APKPure App
Get Knock Sound old version APK for Android
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.
What's New in the Latest Version 1.0.1
Last updated on Feb 17, 2016
Minor bug fixes and improvements. Install or update to the newest version to check it out!
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Knock Sound
1.0.1 by Shibusawa Rocket
Feb 17, 2016