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 Serman Software Solutions:
The Glasgow Coma Scale (GCS) is an important neurological evaluation tool that aims to give a reliable, objective way of recording the conscious state of a person for initial as well as subsequent assessment. GCS was initially used to assess level of consciousness after head injury, and the scale is now used by first aid, EMS, and doctors as being applicable to all acute medical and trauma patients. In hospitals it is also used in monitoring chronic patients in intensive care.The Glasgow Coma Scale+ application for iPhone, iPod and iPad, is a very helpful tool that enable its users to evaluate their patients neurological state in a very precise way. It also provides quick help about the scale parameters.