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 Sridhar Reddy:
Dragonvale Breeding Simulator is a fully functioning Breeding utility app for DragonVale! A must have for all DragonVale players, this app allows you to test out breeding combinations and see what eggs they will produce. Rather than waste hours mating dragons in the breeding cave, simply input the dragons you would like to breed and this app will tell you exactly what eggs you would get if you did breed them! And right now, DragonVale Breeding Simulator is on sale for just .99! This special price won't last long so act soon!"This app is amazing! I got my first 48 hour egg after just a few minutes of looking through this app! Crossing my fingers for a rainbow! Can't thank the creators enough! 5 stars all the way!"-Pizzadough323(Reviewer)Update 3/9/12A new update with updated information on the newest dragons released(Panalog, love etc) will be released next week. Until then continue to enjoy this limited time sale price of just .99!