I really don’t understand all the negative comments. No blocker is perfect, but this one is pretty close. I use it on all my devices and just updated to the new version on my ipad and iPhone. The legacy and new version (1Blocker X) sync perfectly with iCloud. There is reluctance on the developer’s part to create a new paid version for OSX like they did iOS, but am glad they are keeping the legacy version updated as best as possible. Please re-consider providing the new version to cover OSX. edit: 19 Jun 2018 - guess I need to downgrade this app to 1 Star. Noted with the new upgrade, various website will not even display and it blocks the entire site. Seems to be random, everything from Turner Motorsport, ECS Tuning, to Foxnews.com ; the entire site is blocked with nothing but a blank page. the only option is whitelist the site. Reached out to the developer to inform them immediatly after the update was installed but have heard nothing back nor any updates to the app to fix the issue.