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Two things to check:

• Focus Mode must be toggled on in the popup — the target icon lights up in gradient colors
• The domain you added must match the real hostname without www., https://, or trailing slashes. Use reddit.com, not www.reddit.com/

FocusLens uses substring matching, so reddit.com blocks old.reddit.com and new.reddit.com automatically.

Not automatically — and that's by design. Cloud sync would require servers, which break the privacy promise.

You can manually move data:

• On device A: Settings → Export as JSON
• Copy the JSON file to device B (email, AirDrop, USB, whatever)
• A JSON import feature is on the roadmap — until then, the export serves as a backup

Yes, 100%. FocusLens makes no network requests for tracking or analytics — everything runs locally. The one exception is fetching website favicons (those little icons next to domain names), which load from Google's public favicon CDN. If you're offline, favicons just don't appear — tracking continues normally.

Right-click the FocusLens icon → Options (or click the ⚙ gear inside the popup). Scroll to Categories.

• Type a name in "New category name" (e.g., "Client Alpha")
• Pick a color
• Click Add category
• In the new category card that appears, type domains one at a time (e.g., clientdomain.com) and hit Add

Your tracking data updates retroactively — if you had 2 hours on clientdomain.com already tracked as "Other," it instantly reclassifies to "Client Alpha."

Streaks reset if you miss a day without hitting your daily productivity goal. The streak advances only when "Productivity" category time ≥ your daily goal (default 4 hours). If life happens, the streak starts fresh at 1 on your next goal-hit day — no shame, no penalty beyond the reset.

Pro tip: lower your goal slightly if you're just starting out. A 2-hour goal you hit consistently beats a 5-hour goal you miss three times a week.

Arc, Brave, Edge, Opera, Vivaldi — yes. They're all Chromium-based and use the same extension API. Load unpacked the same way.

Firefox — not yet. Firefox uses Manifest V2 with a different API surface. A Firefox port is planned but not available today.

Safari — not planned in the near term. Safari extensions require Apple Developer account ($99/yr) plus native Xcode wrapping, which fights the "free and simple" goal.

Since FocusLens is loaded unpacked (not from the Chrome Web Store), updates are manual:

• Download the latest zip from the homepage
• Unzip it, replacing the old folder (or use a new folder and remove the old)
• Go to chrome://extensions and click the reload arrow on FocusLens

Your data persists through updates because Chrome's local storage is tied to the extension's ID, not the files. Always a good idea to export a JSON backup first, just in case.

Focus Mode is a manual toggle by design — not a schedule. The workflow is: flip it on at the start of a 90-minute deep-work block, flip it off when you're done.

• Add every site that regularly derails you — Twitter, Reddit, news, YouTube
• Don't overthink the list — if you notice yourself bargaining with a site, add it
• Blocked sites redirect to a motivational page with a rotating quote and a "close tab" button

The default goal is 4 productive hours. For most knowledge workers this is achievable on a good day but not every day — which is the right calibration.

• If you're hitting 4h every single day: raise the goal (but most people overestimate their true deep-work capacity)
• If you're hitting 4h less than once a week: lower to 2–3h. A streak you can maintain beats an ambitious number you can't
• The goal only counts "Productivity" category time, so adding your client/study tools as a custom category bucket they into "Productivity" counts

Settings → Your data → Export CSV gives you a flat file with Date, Domain, Total Seconds, Total Minutes columns — perfect for pivoting.

Ideas for what to do with exports:

• Pivot table in Excel/Sheets: "which days did I work the most on X?"
• Weekly timesheet generation for freelance clients
• Feed into a Python notebook for trend analysis
• Plain backup — keep a weekly copy in case something goes wrong