I had previously used Screen Time relatively successfully (although the process of installing and pairing seems to be problematic at the best of times). However, this year I bought Premium and, for an entire month, the app didn't work properly. I was constantly in touch with customer services, which compounded the bad experience as at times they would take hours to respond on chat, at other times it would be days! I even sent an email directly through the site's contact form and although I could see that this prompted customer services to pick up the ball they had dropped, I still ended up waiting three days for a response (to the urgent-at-the-time issue of geolocation for my teenage daughter, which - in the end - I never got). When I told them I was canceling my subs, I got "Sorry for the inconvenience". I won't ever use them again.