Is there a timer to lock a kid from excessive use

[pectin232]

Like if a child is given certain times to use like weekdays from [sample] 7-8, weekends from 8-am and 4-6 and that it or other flexible times... of course. Advise or suggestions?

 

[Gav2k]

Wirelessly posted (iPhone 4s: Mozilla/5.0 (iPhone; CPU iPhone OS 5_1 like Mac OS X) AppleWebKit/534.46 (KHTML, like Gecko) Version/5.1 Mobile/9B179 Safari/7534.48.3)

Net nanny is what your after.

 

[LostSoul80]

I'm not sure what you mean by "lock". Apple wouldn't allow apps to "lock" anything of the OS by the way. There might be more chances with a jailbroken device.
The most simple solution to this is not to buy an iPhone.

 

[Aspasia]

The best timer to control a kid's excessive use is a parent

Other than that, I think there's an auto shutdown app for jailbroken iPads.