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 Benjamin Lochmann:
You want to know what happened today? Not a problem with this app!Just fire it up and it will tell you what happened today in the past. That may have been quite recent or several hundred years ago.For example, using this app on April 11, you'll learn, that 100 years ago on that day, the Titanic departed from Ireland on its way to the US.Plus, you get some additional information about the respective events, so you learn a bit more every day.