It's great to have a free digital download app in shopify. It's easy to use and the fact that you can add different downloads to product variables is great. But the app can be developed, especially the option that customers can download their digital goodies from their account in the store would be very handy. Let's admit no one stores e-mail download links and when the customer lost their download keys the shop owner has to create manual download links. And more importantly in such cases you cannot send an automated new download email to the customer within the app settings>orders page. It sends the old download key which may have ran out of the download limit.