The "Download Now" link directs you to the iTunes App Store, where you must continue the download process. You must have iTunes installed in order to open the link, and you must have an active iTunes account to download the application. This download may not be available in some countries.
From Island Officials:
Access what beers are currently on tap at the Growler stations at the Spirits Unlimited stores in Toms River, Manahawkin, Berkeley, Brick, and Point Pleasant Beach. Also find out what is on tap at the Spots bars in Toms River and Point Pleasant Beach, and the Acme Draft House in Berkeley. The app also has a listing of what beers are on deck for the stations and an event listing for any up and coming events. It even has a section to open your mind to some newer beers at the store and educate you a bit. The on tap section gives you the name of the beer, the ABV percentage and the price with a brief description on that particular beer. You can post to Facebook and tweet your selection and share with your friends. Get the selection in real time as each store will be updating whenever a keg is kicked.