I am trying to find an app blocking app either on itunes or via jailbreak that would block (require a password) the settings menu, If it doesnt exist would it be possible to develop? I know it may sound dumb to most but i can assure you it would have its uses especially amongst the parental control and porn blocking types.
First off, I'd like to reword what you're asking for so that we can make sure we're talking about that same thing.
Devices get apps 2 ways: 1. the AppStore 2. bootleg/jailbreak.
You're asking if an app can be written that blocks certain apps, the answer would be no.
iTunes is controlled by Apple and they put up what they want.
Jailbroken is different, it's controlled by whoever and they control what's out there. I think a person can also crack any app and have it on their device, but I don't have a lot of knowledge in that.
You're asking for something to be done at a different level, the OS level, not the app level.
If there were a way to prevent ALL apps from being downloaded and only have one app that would control what could be downloaded, that might be a path.
That would involve somehow removing all access to apps on the device (if that can be done) and then writing an apps that only has a selected list that connects the device to only those apps.
Removing iTunes might work with a jailbroken device, but I don't know. I think they run a cracked version of the OS. Maybe the OS can be cracked so that no iTunes can be run.
Another option might be to block ALL apps. I don't know if that can be done, maybe within the iTunes account, the device can be blocked after you've loaded the pre-screened apps.
I think that Apple might have addressed this already somehow. I can see a need for things like non-violent games on a child's device.