Website Blocker is a simple tool which enable you to set a list of undesired websites which needed to be blocked in Safari.
So iPhone 4s, iPhone 5, iPad 2, iPad 3, iPad 4 and 5th generation iPod touch won’t support content blocking extensions.
3-Add the websites (without .com or .net or whatever extension) in Website Blocker.
5- You can remove any website from blocking list by swipe left and click "delete".
It keeps you and your relatives (wife, kids,...etc) whom use your IOS device from accessing those listed websites.
4- Ensure that the blocker is enabled from Settings > Safari > Content Blockers.