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 Pearson Education:
Smarthinking is the is the research based, research proven on-demand, online tutoring service that educators choose most to increase student achievement, boost retention, and enhance learning. This application provides easy mobile access to the Smarthinking Notification App. You will be able to access the last 5 essays that been returned through this App, and retrieve the critiques you have received. We strive to complete writing reviews within 24 hours and will notify you with this App.