My question regards a possible remote Parental Control system for iOS devices.
I understand how to apply web filtering options that would allow parents to whitelist and/or blacklist specific URLs and domains remotely on their children's devices via managed profiles and MDM server but is it possible to whitelist/blacklist certain apps from the iTunes store - i.e if the parents want to remotely block the installation of say Snapchat and Viber for example? It appears that filtering right now is only possible based on the iTunes "appropriate age" tag - i.e 4+
Thanks!
No, that level of control is unavailable in iOS. The closest you can get today is to either set the appropriate app age or to use the app installation restriction to block the entire App Store (keeping in mind that on iOS 8, this restriction will also prevent app installation by MDM as well).