GOLD cannot be installed directly on an iPad. However, GOLD can be accessed from a remote session server via various thin client access methods such as RDP emulators, etc. in much the same way Virtual Branch functions. However, CU*Answers does not officially support accessing GOLD via an iPad at this time.
CUs can certainly access GOLD in this manner, though it is recommended they follow best practices and FFIEC/NCUA VPN recommendations concerning two factor authentication, encrypted sessions, PIN locked devices, etc.