Every website blocker works fine in theory, right up until the moment you actually want to check the blocked site badly enough to disable it. That moment is the entire point of using a blocker in the first place — if you never wanted to check the site, you wouldn't need the tool. So a blocker's real test isn't whether it blocks when you're motivated; it's whether it holds when you're not.
Most tools fail this test. A settings toggle, a menu bar click, an extension you can disable — all of it is one small action away from undone, and one small action is all a distracted brain needs.
Why "Easy to Turn Off" Defeats the Purpose
The value of a blocker comes from removing the decision, not from making the decision slightly harder. If disabling it takes the same three seconds as opening the blocked site would have taken anyway, you haven't added a meaningful barrier — you've just added a step that a determined-in-the-moment version of you will happily take.
A Block That Holds
Lock In! includes Strict Mode, which makes an active blocking session uncancellable until its timer runs out — there's no settings toggle, no menu bar shortcut, no way to end it early.
The Decision Happens Once, Upfront
You choose Strict Mode and set the duration before the session starts, while you're motivated and clear-headed. From that point, the commitment is locked in rather than renegotiated every time temptation shows up.
No Password Reset or Uninstall Workaround
The block is enforced at the system level through a macOS network extension, not through a setting you can quietly flip back. It's designed specifically to survive the moment you most want to bypass it.
Combine with Apps for a Full Lockdown
Strict Mode applies to app blocking as well as websites, so a full-screen interrupt on a blocked app can't be dismissed early either — both halves of the block hold together.
A block that only works when you don't need it isn't a block. Get Lock In! on the Mac App Store