The download button opens the iTunes App Store, where you
may continue the download process. You must have iTunes installed with an
active iTunes account in order to download and install the software. This
download may not be available in some countries.
From AttractSoft GmbH:
This is the Electronic Club Card App for the Social Responsible Customer Loyalty Program - OneForAllClub.The OneForAllClub Program allows you to receive customer discounts as you purchase and consume from the participating businesses and than decide if you wish to cashback or donate the accumulated amounts from those discounts.The App loads and caches on the device your UCN (Unique Client Number) in human readable and QR Code form as well as short stats for your Club usage.Handy shortcuts for quick assess of the user profile and statistics in the program are also available through the app.