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 Joules Media B.V.:
We're introducing yearly subscriptions. Get ongoing access to all available calendars, including lots of extra info and (live) results, right inside your calendar app. Take the one-month free trial first, so you can try before you buy. And if we can help you with any questions you have, we'd be more than happy to! Just drop us a line at email@example.com or tweet us @SchedJoules.