The download button opens the iTunes App Store, where you
may continue the download process. You must have iTunes installed with an
active iTunes account in order to download and install the software. This
download may not be available in some countries.
From Easy Mortgage Apps, LLC:
American Mortgage Group offers mortgage customers a unique way of communicating and interfacing with their realtor and loan officer. The app can easily provide loan information and status, have push notification reminders for important dates (appraisal, closing, rate lock etc.), initiate a chat, provide all the essential details of the loan process, Mobile Capture Technology to securely upload documents, and allows consumers the ability to view and download loan documentation (approval, appraisal and closing docs).