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.
Advanced timer lets you count to or from any event. You can keep track in just days or in years, months and days. Complete with in-app email, in-app SMS and copying functionality. Just set the date, and look back in the app whenever you feel like it.