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.
Don't be fooled by all the percent and dollar off discounts. Use this multiple discount calculator to find out the exact discount you are getting after combining all the discounts. Great for shopping at department stores when you see multiple percent off discounts and want to know the exact amount you are saving.