[Passive time tracking: no timers, no manual entry](https://billnotch.com/#how) # Automatic time tracking that adds up your billable hours. > BillNotch turns tracked hours into invoice-ready totals: automatic, passive time tracking and PDF invoicing for freelancers who bill by the hour. The desktop app records what you work on and sorts it into projects automatically. See your billable total, send a PDF invoice, and catch the hours you forgot to bill. [Start tracking free](https://app.billnotch.com/register) [See how it works](https://billnotch.com/#how) Free to start No credit card Windows · macOS · Linux The loop ## Three steps, and you never reconstruct a week again. 01 ### Capture Install the desktop app once. It watches the active window and logs what you work on, second by second: no timer to start, nothing to remember. Connect a Google or Microsoft calendar and BillNotch reads your recent meetings, read-only, and suggests them as entries you approve. 02 ### Categorize Activity sorts itself into projects by your keyword rules. Turn on AI categorization for the fuzzy cases. Billable is inherited from the project. 03 ### Bill Read the billable total, send a PDF invoice, or export CSV. The Revenue Leak Finder flags billable time you never invoiced. Built around the billable hour ## Everything from raw activity to an invoice-ready total. zoom.us Client · Discovery linear.app Acme · Planning meet.google.com Standup Internal github.com Acme · Engineering figma.com Acme · Design ### Categorization on autopilot Keyword rules (domains, app names, ticket prefixes) sort activity into projects out of the box. Add an AI key and the fuzzy cases get sorted too: billable when the project bills. T ### Built for you, not your boss Sync window titles or keep them on your machine: your call, per device. Connect each one with an API key you issue and revoke anytime. Billable today $0 04:32:10 running ### Billable, to the second Every entry inherits its project’s billable rate, summed live into a total you can invoice. This week 28.4 / 37.5h billable Mon Tue Wed Thu Fri ### Invoices & the leak finder Totals by day and project, ready for a [PDF invoice](https://billnotch.com/freelance-invoicing-software) or a CSV export. The Revenue Leak Finder answers what’s still unbilled: billable time you tracked but never put on an invoice. [See what you’re leaking, free, no signup](https://billnotch.com/revenue-leak-calculator) Pricing ## Less than one billable hour a month. Start with 14 days of full access, no card required. Flat per-seat pricing: no usage fees, no surprise overages. Pick a plan when the trial ends; your data exports cleanly if you don’t. Yearly saves 2 months 14-day free trial on every plan Full access to every feature. The on-ramp, not a separate tier. Card optional ### Pro Most popular For a freelancer billing by the hour. $9 /mo 1 seat [Start free](https://app.billnotch.com/register) - Automatic desktop tracking - AI categorization - Unlimited history - PDF invoicing - Client & project management ### Team For a studio billing as a team. $12 /seat/mo per seat [Start free](https://app.billnotch.com/register) - Everything in Pro - Team dashboard - Billable rates - Utilization & capacity reports - CSV & data exports ## Start tracking the hours you can bill. Set up the desktop app once. Your ledger keeps itself, your invoices write from the total, and the leak finder makes sure nothing bills late. [Get started](https://app.billnotch.com/register) [See pricing](https://billnotch.com/#pricing) Free to start No credit card Revoke access anytime ## The short version. Billing on your own? See how the loop runs [for freelancers](https://billnotch.com/for/freelancers). On Linux? The [Linux time tracker](https://billnotch.com/linux) runs native on X11 and Wayland. Still curious? Sign in and connect the desktop app in a couple of minutes. ### Do I have to start and stop a timer? No. The desktop app records the active window for you. You can still start a manual timer on the dashboard whenever you want one. ### How accurate is the categorization? Keyword rules are deterministic and need no setup. That is the default. Add an AI key for the fuzzy matches; the rule-based categorizer stays the tested fallback either way. ### Can I invoice from it? Yes. Generate a PDF invoice from a project’s billable total, or export a CSV (activity, project, duration, billable flag) for any date range you pick. ### What is the Revenue Leak Finder? It scans your tracked time for billable work that never landed on an invoice: unbilled entries, gaps, projects you forgot, so you can bill the money you already earned. ### Where does my activity go, and who can see it? To your own BillNotch account, over an API key you issue and can revoke. You choose the sync mode per device. Window titles can stay on your machine and never leave it. Data is processed on EU servers and never sold. Built for you, not your boss. Canonical: https://billnotch.com/