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 Tobias Werner:
flight codes pro is database reference of all 10.000 IATA- airport codes, from the biggest like JFK John F. Kenedy USA to the smallest KAS Karasburg NAMIBIA for example, which makes it different to the standard version of flight code available at iTunes store too - the pro version is including:* IATA Code* Cityname* Country* Airportnameyou are able to send out the codes via email out of the app,this might be interesting for all airline pilots and amateur pilots too as well as for people,who are interested in aviation and navigation!This app does not include any annoying advertisement !no warranty for correctness of data !