Metallicons is an icon pack. It is not a stand alone application you need a third party launcher to apply it.

What's included:

★ 4.524 HD icons (256x256)
★ 115 HD cloud wallpapers
★ Launchers support: Action Adw AdwEX Apex Atom Aviate GO NextNova Smart Solo
★ Icon masking for un-themed icons
★ Dynamic calendar
★ Alternative icons to choose