When users access a web application on their desktops, you can notify them that a mobile app is available for their application that they can download. This notification is done by means of a smart app banner, which includes a link for the user to download the mobile app.
You must have a valid, signed SSL certificate and use HTTPS in the link that is displayed in the smart app banner for your app to be downloaded to an iOS device.
To create a smart app banner: