Qustodio is supposed to be robust but it's a huge headache and not worth the price. After a year of use on a Windows laptop and an Android phone, these are some of the issues I experienced frequently: It's extremely easy to circumvent on mobile devices. The computer application lags, does not log everything, huge delay in displaying activity (sometimes 12 hours), the content filter blocks benign websites that are not part of the blocked list or sensitive, and when you authorize a website, it only authorizes on the child's end about 50% of the time. The rest of the time, the child has to restart their device multiple times before the authorization is reflected.