VKT Toolkit · September 26, 2026 · 7 min read

JustFocus vs Cold Turkey vs Forest — Which Website Blocker Actually Fits You?

Search for a website blocker and three names keep coming up: Cold Turkey, Forest, and a handful of lightweight extensions — including our own VKT JustFocus. They all "block websites," but they come from completely different philosophies, and picking the wrong one is how blockers end up uninstalled after a week.

Here's the honest version: which of the three matches how you actually work — and when you should use more than one.

Three Blockers, Three Philosophies

• Cold Turkey is a desktop application (Windows/macOS) — the sledgehammer. It can block websites system-wide, block entire applications, lock blocks so you can't undo them mid-session, and run on schedules. Maximum control, maximum commitment;
• Forest is a mobile app (with a browser extension alongside) — the game. Every focus session grows a virtual tree; leave a blocked site and the tree dies. It turns focus into a visible, collectible streak, which is exactly why it clicks for some people and feels gimmicky to others;
• JustFocus is a lightweight Chrome/Edge extension — the middle path. You list the sites that eat your afternoons, block them with a timer (or the whole workday), and move on. No account, no gamification, no system-level surgery. There's a 5-minute bypass for genuine exceptions, and the site re-blocks itself afterwards.

Feature Comparison

When Cold Turkey Wins

• "I cheat. I always cheat." — if you will absolutely open a new tab and disable a soft blocker, Cold Turkey's locked "Frozen" mode is the only one of the three that takes the keys away;
• "The problem isn't just the browser" — games, chat apps, video players: Cold Turkey blocks whole applications, which no extension can;
• "I want blocks that start and end on a schedule" — set work-hours rules once and forget about them.

When Forest Wins

• "My phone is the real distraction" — Forest's home turf is mobile, where extensions can't follow;
• "Punishment doesn't work on me, but streaks do" — if visible progress motivates you, a growing forest is genuinely effective psychology;
• "I want focus to feel good, not restrictive" — the gamified framing makes short sessions easy to start.

When JustFocus Wins

• "My problem is 3 specific websites in the browser" — you don't need system-wide enforcement to stop opening the same three tabs. List them, block them, done — free for up to 10 sites;
• "I want timed blocks, not micromanagement" — block YouTube for 8 hours while you work; it unblocks itself when the timer expires. No schedules to configure;
• "I need a pressure valve" — the 5-minute bypass covers the legit case ("I need one tutorial video") without tearing down your whole setup. Then it re-blocks automatically;
• "No accounts, no tracking" — the free tier is fully local, sends zero network requests, and needs no sign-up. Your blocklist syncs through Chrome's own storage, not someone's server;
• "I'll actually keep it installed" — lightweight blockers survive because they don't demand behavior change. If a sledgehammer feels like too much, you simply won't use it.

Mixing Them (What Actually Works)

They're not mutually exclusive — plenty of people run two:

• JustFocus in the browser + Forest on the phone — covers the two surfaces where distraction actually happens, with the right tool for each;
• JustFocus daily + Cold Turkey for crunch weeks — soft blocks for ordinary days, the sledgehammer when a deadline needs it;
• JustFocus + a visible timer — pair it with a floating Pomodoro timer (like VKT RetroTime): the blocker removes temptation, the timer structures the session.

The honest rule of thumb: match the tool to the strength of your problem. Mild distraction → lightweight blocker. Serious addiction → locked-down app. Motivation deficit → gamification.

FAQ

More guides in the VKT blog; questions to [email protected].