function mobile_redirect(){

if ( is_page( 'Download' )
    } else {
    require_once( get_template_directory() . '/mobile_detect/Mobile_Detect.php');
global $detect;
if ( class_exists( 'Mobile_Detect' ) ):
        $detect = new Mobile_Detect;
if( $detect->isiOS() ) {wp_redirect( 'https://itunes.apple.com/au/app/stashd/id714814803?mt=8'); exit(0); };
endif;
    }