iOS

<!-- non-retina iPhone pre iOS 7 -->
<link rel="apple-touch-icon" href="icon57.png" sizes="57x57">
<!-- non-retina iPad pre iOS 7 -->
<link rel="apple-touch-icon" href="icon72.png" sizes="72x72">
<!-- non-retina iPad iOS 7 -->
<link rel="apple-touch-icon" href="icon76.png" sizes="76x76">
<!-- retina iPhone pre iOS 7 -->
<link rel="apple-touch-icon" href="icon114.png" sizes="114x114">
<!-- retina iPhone iOS 7 -->
<link rel="apple-touch-icon" href="icon120.png" sizes="120x120">
<!-- retina iPad pre iOS 7 -->
<link rel="apple-touch-icon" href="icon144.png" sizes="144x144">
<!-- retina iPad iOS 7 -->
<link rel="apple-touch-icon" href="icon152.png" sizes="152x152">