Focus Firewall is a lightweight web and app blocker built exclusively for macOS. Flip a switch and it instantly blocks a pre-defined list of distracting websites and applications across your entire Mac. It’s intentionally simple: no complex profiles or overwhelming settings – just a quick way to “make the usual suspects disappear” during work hours.

You can configure a daily schedule (e.g. block distractions from 9 AM to 5 PM) so you don’t even have to remember to turn it on. It’s ideal for professionals or students who primarily work on a Mac and want a “quiet little bodyguard for your attention.”