This works excellent for me! I have seen no ads on any sites that I frequent (even those "forbidden" sites, that I definitely do not frequent at all totally not) I did have to reset safari (close through app switcher, yes some people STILL don't know you can do that!!) to get it to work at first, no problems tho. Very easy setup and the app is well organized also. Settings-safari-content blockers is literally it for set-up, SUPER EASY!