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 SDI Health:
Worried about nasal allergy symptoms? With the OMNARIS AllergyManager for iPhone, iPod touch, and iPad, you can easily access all the tools you need to manage nasal allergy symptoms:- Allergy ForecastsGet daily pollen counts and 4-day allergy forecasts for your area or any U.S. location, along with predominant pollen information, in an easy-to-read graphic display.- Symptoms Diary/Symptoms ReportKeep track of nasal allergy symptoms and their severity each day in just a few touches with the Symptoms Diary. See how your symptoms have been doing over time with the Symptoms Report, a handy chart summarizing your Symptoms Diary entries for up to a year.- OMNARIS Refill RemindersSet the Refill Reminder every time you refill your OMNARIS prescription. You'll see a countdown reminding you when it's time for your next refill right on your forecast page, so your relief won't run out.- Relief Information and a Great Money-Saving OfferAccess helpful information about how to combat the cause of nasal allergy symptoms, and learn about a great money-saving offer for nasal allergy relief.- Important Information about OMNARISIndications:For seasonal allergic rhinitis, ages 6 and older. For year-round allergic rhinitis, ages 12 and older.Important Safety Information:Most common side effects that may occur with OMNARIS are headache, nosebleed, and sore throat.