<!-- iPhone & android ICON -->
<link rel="apple-touche-icon" href="icon.png" />

<!-- iPad ICON-->
<link rel="apple-touch-icon" sizes="72x72" href="touch-icon-ipad.png" />

<!-- iPhone/Ipad (Retina) ICON-->
<link rel="apple-touch-icon" sizes="114x114" href="touch-iconiphone4.png" />