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 Kevin McGovern:
How happy are you? Help Moodie track your mood every day and discover how you can become a happier person! And with support for 10 different languages, Moodie lets you use the language that makes you happiest!