Strict Workflow Review: Is It Worth It in 2026?

Strict Workflow is one of the oldest tricks in the Chrome Web Store: a free extension that blocks a list of sites during timed work periods and unblocks them during short breaks, built around the Pomodoro Technique’s 25-minutes-on, 5-minutes-off rhythm. No account, no dashboard, no subscription — just a blacklist and a timer. For a certain kind of user, that is exactly the appeal.

The question in 2026 isn’t whether Strict Workflow works as advertised. It does, in the narrow sense that it blocks the sites you list, for as long as the timer says. The real question is whether “blocks sites for as long as the timer says, unless you click the icon” is still a meaningful form of self-control now that most people already know how to disable a browser extension in two clicks. This review looks at what Strict Workflow gets right, where the extension model runs out of road, and who it still makes sense for.

In short — Strict Workflow is a free, no-frills Chrome extension that blocks a blacklist of sites during Pomodoro work intervals and unblocks them on breaks, with essentially zero friction to turn off.

• Good fit: people who just need a visual/habitual nudge and won’t fight themselves to disable it.
• Good fit: anyone already running Pomodoro sessions who wants blocking tied to the timer automatically.
• Weak fit: anyone who has tried and failed to stop themselves from disabling a blocker mid-task.
• Weak fit: people who get distracted outside the browser (apps, other browsers, phone) as much as inside it.
• Weak fit: teams or students who need scheduling, reporting, or enforcement across devices.

What Strict Workflow actually is

Strict Workflow is a lightweight extension available for Chrome, Firefox, and Edge. Setup is a two-minute job: open the options page, type in the domains you want blocked — social feeds, news sites, whatever pulls focus — and set your work and break interval lengths, which default to the classic 25 and 5 minutes. Start the timer from the toolbar icon, and for the length of the work interval, the sites on your list return a blocked page instead of loading. When the break interval kicks in, they’re accessible again, then blocked once more when the next work interval starts.

That’s the entire feature set. There’s no scheduling by day of week, no separate blocking profiles, no password or delay to override a block, no usage statistics, and no sync between devices — each browser install keeps its own blacklist and timer state. If you’re coming from a paid tool with dashboards and reports, Strict Workflow will feel almost aggressively minimal. If you just want a timer that also blocks Twitter, that minimalism is the point.

How the Pomodoro cycle changes the blocking model

Most blacklist extensions block on a schedule you set once — 9 to 5, or “always.” Strict Workflow ties blocking to a repeating interval instead, which has a real behavioral upside: the block isn’t a static wall you get used to and route around, it’s paired with a countdown you’re actively working against. Sites unblock automatically on breaks, so you’re never tempted to disable the extension “just for five minutes” — the five minutes are already coming.

That also means Strict Workflow is a poor fit if you don’t already work in Pomodoro-style sprints. If your actual work pattern is long uninterrupted blocks, or unpredictable stretches between meetings, forcing everything into fixed 25/5 cycles adds friction rather than removing it. For a deeper look at whether Pomodoro cycles suit your work style at all, see Best Pomodoro Apps and Timers and Time Blocking: The Complete Guide.

Where Strict Workflow falls short

It disables in two clicks

This is the honest limitation, and it’s structural, not a bug. Strict Workflow runs as a browser extension, which means it lives entirely inside Chrome’s extension permission model. Anyone who wants around it can open chrome://extensions, toggle it off, and reload the blocked page — no confirmation, no delay, no password. The toolbar icon itself often offers a pause option, which is convenient when you genuinely need an exception and a trap when you’re the person the block exists to stop.

For someone with reasonably intact impulse control who just wants a visible nudge, that’s fine — the friction of opening the extensions menu is often enough to make you pause and reconsider. For someone who has specifically noticed themselves disabling blockers mid-session, an extension-based tool asks the part of you that’s procrastinating to be the one enforcing the rule. It rarely wins.

It only sees the browser it’s installed in

Strict Workflow blocks web pages inside the browser where it runs. It has no visibility into native apps, other installed browsers, or other devices. Someone whose actual distraction lives in a messaging app, a game, or a second browser profile will find Strict Workflow blocks nothing relevant to them. It also doesn’t extend to phones or tablets — if you carry your distractions in your pocket, this tool has no reach there at all.

No scheduling, sync, or reporting

There’s no way to set different blacklists for different times of day, no cross-device sync, and no log of how much time you actually spent blocked versus overridden. If you want data on your own patterns, or rules that differ between a work laptop and a home one, you’ll need a different tool.

Strict Workflow compared to other blockers

Tool	Platform	Blocking method	Free plan	Price	Hard to disable?
Strict Workflow	Chrome, Firefox, Edge	Pomodoro-timed blacklist, extension	Yes, fully free	Free	No — one click in extensions menu
LeechBlock	Chrome, Firefox	Scheduled blacklist with time allowances, extension	Yes, fully free	Free	No — extension settings
StayFocusd	Chrome	Daily time-allowance blacklist, extension	Yes, fully free	Free	Not by default, unless "Nuclear Option" locks are set
Cold Turkey	Windows, Mac	System-level blocking app, not an extension	Yes, limited	Free / Pro from $25 one-time	Yes, locked schedules can't be edited until they expire
Browwwser	macOS (Chromium browser)	Built into the browser engine, not an extension	Yes (7 days)	$99/yr or $199 lifetime	Yes, no extension to disable since blocking is part of the browser itself

The pattern across the extension-based tools — Strict Workflow, LeechBlock, StayFocusd — is the same: they’re all free, all easy to install, and all sit inside the extension permission model, which means they’re all one settings click away from being off. Cold Turkey and Browwwser take a different approach by moving enforcement outside the thing being blocked, which is why they cost money but hold up better under an active attempt to get around them.

If you’re specifically weighing Strict Workflow against LeechBlock, the difference comes down to configurability: LeechBlock lets you build custom schedules and multiple blocking sets, while Strict Workflow gives you a fixed Pomodoro loop and nothing else to tune. Our LeechBlock review covers that tool in depth.

Who Strict Workflow is actually good for

Strict Workflow works best for people who already run Pomodoro sessions and want blocking to happen automatically rather than remembering to turn it on and off manually. If your distraction problem is mild — you drift to a familiar tab out of habit rather than compulsion — a visible, timer-linked block is often enough friction to redirect you. It also costs nothing and takes minutes to set up, so there’s little downside to trying it for a week of focused sprints.

It’s a weaker match for students and remote workers who’ve already tried free extension blockers and found themselves disabling them under deadline pressure — see our guides on distraction blockers for students and staying focused working from home for what tends to hold up in those situations. It’s also not built for anyone managing ADHD-related task paralysis, where the problem usually isn’t remembering to block a site but getting started at all; ADHD Paralysis: What It Is and How to Break Through and Best ADHD Apps to Stay Focused go into strategies and tools better suited to that.

Setting it up, and what “blacklist” actually means here

Adding a site is straightforward: open the extension’s options, type the domain, save. If you’ve never blacklisted a site in Chrome before, the mechanics are the same across most extensions in this category, and our step-by-step guide on how to blacklist a website on Chrome walks through the general process, including subdomains and wildcard patterns that trip people up. The same logic applies whether you’re using Strict Workflow, LeechBlock, or any other blacklist-based tool — see also How to Block Websites on Chrome for the broader picture.

Mac users specifically looking for browser-level blocking, rather than an extension, should compare Strict Workflow against native or app-based options in How to Block Websites on Mac and Best Focus Apps for Mac. Windows users evaluating the same trade-off will find a fuller field in Best Website Blockers for Windows.

Should you use Strict Workflow in 2026?

Use it if you want a free, zero-setup way to pair a Pomodoro timer with automatic site blocking, and you trust yourself not to click “disable” the moment a block gets inconvenient. It’s a genuinely useful habit tool for people whose distraction is mild and browser-only.

Skip it, or pair it with something stronger, if you’ve already noticed yourself routing around extension-based blocks — disabling them, switching browsers, or reaching for your phone instead. In that case the limitation isn’t the blacklist, it’s where the enforcement lives. Extension-based tools like Strict Workflow, LeechBlock, and StayFocusd all share the same ceiling: they run inside the browser’s permission system, so turning them off is always a few clicks away. Tools that move blocking outside the extension layer — Cold Turkey on Windows and Mac, or Browwwser, a Chromium browser for macOS where blocking runs in the browser engine itself with no extension to switch off — hold up better under real pressure, at the cost of an install and, for Browwwser, a subscription after a 7-day trial. For a wider comparison across both categories, see Best Website Blockers in 2026.

FAQ

What is Strict Workflow and how does it work?

Strict Workflow is a free browser extension that blocks a list of sites you choose during timed work intervals, then unblocks them during short breaks, following the Pomodoro Technique’s default 25-minutes-on, 5-minutes-off rhythm. You add domains to a blacklist in the options page, start the timer, and the extension blocks those sites until the interval ends or you stop it.

Is Strict Workflow free?

Yes. Strict Workflow has no paid tier, no account, and no in-app purchases. It is free to install and use indefinitely on Chrome, Firefox, or Edge. There is no premium version with extra features, which keeps it simple but also means it never adds device sync, statistics, or stronger enforcement later.

Can I easily bypass Strict Workflow?

Yes, and that is its main limitation. Because it runs as a browser extension, you can disable it from the extensions menu, click its toolbar icon to pause blocking, open the blocked site in another browser, or use a private window if incognito access is allowed. There is no password, timer lock, or account standing between you and turning it off.

Does Strict Workflow work outside Chrome, like on a phone or Mac apps?

No. Strict Workflow only blocks web pages inside the browser where it is installed. It does not touch native apps, other browsers on the same computer, or phones and tablets. If a distraction lives in an app rather than a tab, or you switch browsers, Strict Workflow has no effect on it.

How is Strict Workflow different from LeechBlock?

Both are free browser extensions with a blacklist, but LeechBlock offers custom schedules, multiple blocking sets, and time allowances, while Strict Workflow sticks to a fixed Pomodoro rhythm with almost no configuration. LeechBlock suits people who want granular rules; Strict Workflow suits people who just want a timer that blocks things automatically.

Is Strict Workflow still maintained and safe to use in 2026?

Strict Workflow is a minimal, long-standing open-source extension with infrequent updates, which is typical for a tool this simple — there is little to add beyond a working timer and a blacklist. Check the Chrome Web Store listing for the last update date and review count before installing, since store presence and permissions can change over time.