Generally SafeNet Browser is the leading parental control and content filtering mobile browser. It is a safe browser for your family. SafeNet Browser is powered by the innovative Cloudacl's content filtering and site categorization system which go through over several million web sites and billions of pages every day. Please make sure you can get a copy before Oct 7 which the promotion ended date.
http://itunes.apple.com/us/app/safenet-browser/id464206775?mt=8
For more detail help, please refer to the developer's help page:
http://www.cloudacl.com/support/iphone