it doesnt stop adverts on youtube or any of the other video content providers ive tried it with, what it does is this; often it opens another window and ask you for money so it doesnt open up that window in the future, the people who are giving this app 5* probably gave Ticktock 5* ratings as well. i gave it 2* becasue it was easy to uninstall, often these trype of money demanding apps are almost impossible to uninstall, so for that reason they get 2* from me,