title: Directing user of website to a mobile app
body: <p>I have a website (setup using Wordpress) and a mobile app, that is available for both Apple and Google.  Although my web theme is responsive I would like to give visitors the option of loading the app instead.  Is there any code I can put in the Wordpress theme/site that will check what sort of device the visitor is using and then present an option to redirect them to the app store (i guess this would be a popup). </p>