MODx snippet. It displays the download link for the mobile device you are using.

GetDeviceChunk.php

<?php
//$iOS_chunk  = $modx->getOption('ios',$scriptProperties);
//$Android_chunk = $modx->getOption('droid',$scriptProperties);
 
$iPod = stripos($_SERVER['HTTP_USER_AGENT'],"iPod");
$iPhone = stripos($_SERVER['HTTP_USER_AGENT'],"iPhone");
$iPad = stripos($_SERVER['HTTP_USER_AGENT'],"iPad");
$Android = stripos($_SERVER['HTTP_USER_AGENT'],"Android");
 
//check if user is using ipod, iphone or ipad...
if( $iPod || $iPhone || $iPad ){
        $output = $modx->getChunk($scriptProperties['ios']);
}else if($Android){
        $output = $modx->getChunk($scriptProperties['droid']);
}
return $output;