The best website blocker for Mac is the one you won't switch off
Most Mac users don't quit a blocker because it's missing a feature. They quit because the moment willpower dips, turning it off is one click away. Here's what actually separates a blocker that sticks from one that doesn't.
Your options on macOS, honestly
Screen Time is built into macOS and free. It can block specific sites and set app limits, and it syncs with your iPhone. The catch: it works from lists you maintain, and it's trivial to override in a weak moment, which is exactly when blocking matters most.
Classic blockers (Cold Turkey, Freedom, SelfControl and friends) go further — schedules, sessions, and lockout modes that are genuinely hard to disable. They work well if you're willing to build and maintain blocklists. The friction is that you're doing the thinking: deciding what to ban, keeping lists current, and remembering to start a session.
WithKeel takes a different route built for macOS: instead of lists, you describe your goal in plain words and it watches your screen, stepping in only when you actually drift.
What to look for
- Low setup. If configuring the blocker is itself a chore, you won't keep it current.
- Context over blanket bans. A quick lookup is fine; a 40-minute Shorts spiral isn't. The best tools tell the difference.
- A firm mode for weak moments. There should be a stop you can't undo in two clicks.
- Runs quietly in the background. No timers to remember to start.
- Privacy. A blocker sees your screen — it should keep that data on your Mac.
How WithKeel approaches it
WithKeel is an AI accountability partner for macOS. You tell it what you're working toward and what tends to pull you away — "writing my report; let me use YouTube for research but close Shorts the instant they open" — and it turns that into living boundaries. When you drift, it responds in proportion: a gentle nudge you can wave off, or a firm, tamper-proof stop. There's no blocklist to maintain, and everything it reads stays encrypted on your Mac, used only to check against the goals you set.
WithKeel is in early access for macOS. If you need blocking on your Mac today, Screen Time (free) or a mature tool like Cold Turkey will do the job. If you want something that adapts and is built not to be switched off, join the waitlist at withkeel.app.
FAQ
What is the best website blocker for Mac?
The one you'll keep enabled. Prioritize low setup, context-aware rules, and a firm mode you can't trivially disable.
Does macOS have a built-in blocker?
Yes — Screen Time blocks named sites and app limits for free, but it's easy to override and list-based.
How do I block distracting sites on Mac for free?
Screen Time is the free built-in option. For something adaptive and harder to disable, a dedicated tool like WithKeel is better.