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 Campbell Harvey:
This is the iPad and iPhone version of Professor Campbell Harvey's popular Hyperlinked Financial Glossary. Harvey's glossary is the host glossary for The New York Times, Yahoo, Bloomberg and many others. The initial free version starts off with about 200 terms and their definitions - not hyperlinked. The 500+ upgrade give you access to 500+ terms and their definitions. This is also not hyperlinked. The 8,000+ upgrade give you access to over 8,000+ terms and their definitions with more than 18,000 hyperlinks. This version lets you search all the terms. If you want to share a term you like, you can share it on your Facebook wall.Note: Only the 8,000+ version has hyperlinks in the definition. The 200+ terms and the 500+ terms DO NOT offer hyperlinks.