Much of the software works as advertised, but one of the most important and foundational functions, not only doesn't work, but the software tells you it works when it really doesn't, and they know it but aren't forthcoming with their customers. In the rules, one option allows you to 'block' or 'allow' specific domains, for instance you can tell it to block youtube.com. The ugly truth is, even though you tell it to block a site, it won't. HOWEVER it will tell you, the parent, that the site is blocked. I pay for the premium service, and sent an email regarding this to their tech support. The answer I got was "yes, we are aware of that problem and our engineers are working on it, is there anything else I can help you with?". Bottom line is you can't trust Qustodio.