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 Jordan Seiler:
Using augmented reality, Re+Public resurfaces urban murals by overlaying digital content on to the physical environment. Through Re+Public's camera vision, urban murals trigger digital archives of murals that used to exist, but have been painted over, in addition to animated and interactive 3D digital art. Re+Public allows you to envision city spaces alive with the future of urban art.