ClientHours - Freelancer Tab Time Tracker & Billing

Tracks active tab time by domain, assigns time to client projects, calculates billable hours. 100% local & offline.

ClientHours is a time tracker built specifically for freelancers who bill by the hour — and whose work is spread across a dozen browser tabs rather than one app. THE PROBLEM Freelance work rarely happens in one place. A single billable hour might touch several different tools before it's done, and by the end of the week, reconstructing exactly how long each client actually took is guesswork. Most time trackers assume you'll remember to hit "start," which freelancers rarely do mid-task. HOW CLIENTHOURS SOLVES IT ClientHours runs quietly in the background and tracks time automatically, tab by tab, the moment you switch into a client's work — no manual timer to start or forget. Tracking pauses automatically when you switch away, step out for a break, or your computer goes idle, so the hours logged are the hours actually worked. BUILT FOR HOW FREELANCERS ACTUALLY WORK - Automatic tracking on every website you use for client work — no setup required beyond assigning a domain to a project once - Assign any site to a Client and Project in one click, right from the toolbar popup — no separate app to open mid-task - Scope a specific shared tool to one client: for example, if you use a single Notion workspace across multiple clients, map just that one workspace's path to the right project instead of losing accuracy - See your billable total build in real time, right on the toolbar icon - Generate an invoice-ready summary — hours, project, rate, subtotal — and export to CSV in one click - Set an hourly rate per project so your earnings estimate updates as you work, not just at invoice time PRIVACY FIRST — NO EXCEPTIONS ClientHours never reads what's on your screen. It only ever knows which site has focus and for how long — never page content, never keystrokes, never form data. Everything is stored locally on your device. There's no account, no sign-up, no server, and no data ever leaves your browser. Full details are in the linked Privacy Policy. WHO IT'S FOR Freelance designers, developers, writers, consultants, and any contractor who bills clients by the hour and is tired of either forgetting to start a timer or manually reconstructing their week from browser history. No ads. No accounts. No tracking beyond what's needed to log your own time, for your own invoices.