Microsoft Windows

• Open: Start > Control Panel > Delete Programs.
• Select the one of 4K applications in the list of software.
• Click 'Yes' in the dialog window on question: 'Are you sure that you want to remove 4K Application and all of its components completely?'

Mac OS X

• Open 'Applications' category in Finder.
• Select the one of 4K applications in the list of software.
• Press 'Ctrl + Mouse Click' and select 'Move to trash'.

Ubuntu Linux

• Enter to Software Center
• Select Installed Software.
• Select the one of 4K applications and click 'Remove'.
• Enter your root password and the manager will remove application.

or

• Enter in command line 'sudo apt-get remove nameofapplication', for example 'sudo apt-get remove 4kvideodownloader'
• Enter your root password and the application will be removed.