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 Paul Richardson:
This no-nonsense tuning fork gives you an A, and that's it - let the rehearsal begin!And if 440 is a little sharp or flat for your needs, simply unlock the additional features and set the fork at the required pitch.
A-440 for iPhone
