Track the hour.
Invoice? Klausi writes it.
Start the timer, plan your week, review your hours. Project, client, and service stay attached automatically — and at the end you get an invoice instead of rework.
Free · no credit card · timer running in 30 seconds
Time tracking in numbers
Others just track time. Klausi turns it into an invoice.
Every hour knows its project, client, and service — four building blocks take it from your week to the invoice.
01Weekly calendar
Your week. One picture.
Tasks and tracked time live in the same calendar — you see what was planned and what actually happened. Gaps stand out immediately, manual entries anytime.
Week 2432,4 hToggle the layers on and off — just like in the real weekly calendar.
02Billing
Hours turn into an invoice.
Weekly totals per project and service — one click turns them into an invoice draft with finished line items. Try it right here.
Relaunch Q2 · April
Draft1.125 €Frontend dev
12,5 h × 90 €
480 €Workshops
4,0 h × 120 €
Invoice draft✓ exportable as PDF1.605 €03Recap notes
Say what happened. The rest documents itself.
After the timer stops you speak a short recap — Klausi transcribes live. The note is attached to the time entry and sits in the project under “Notes”.
04Share with clients
Your client sees the hours. On your branded page.
One link per project — password-protected, with an expiry date, in your branding. Toggles control exactly what the client sees.
Product tour
Click through time tracking. Free, no risk.
This is the tracker with real projects: tracked hours, billable time, and the path to the invoice — in one place.
From the beta
What first users appreciate about Klausi.
No big promises. Just clear reactions to a tool that works more calmly.
Feature overview
Everything time tracking can do. Honest, no fine print.
Timer & capture
- Start, stop, running timer
- Start the timer from a task & project
- Sitting/standing with reminder
- Track breaks
- Resolve overlaps automatically
- Timer past midnight → auto-split
- Reminder for forgotten timers
Entries & recap
- Add, edit, delete manually
- Project · client · service · subcategory
- Billable toggle per entry
- Change history per entry
- Voice recap → note on the entry
Week & calendar
- Week and day view
- Drag & resize blocks
- Planned vs. tracked as layers
- Budget in view
Reports & export
- Hours per project, client, service
- Date-range filter (week to year)
- Trend chart by service
- Revenue & billable hours
- Export time as CSV & PDF
- Share project time with clients (own page)
Billing
- Open hours → invoice line items
- Invoice as PDF (GoBD / EN 16931)
- Mark “billed” manually + undo
- Budget warnings (85% / 100%)
AI & integrations
- Start & stop the timer via AI
- Analyze time via AI (MCP)
- Chrome extension for tracking in the browser
Chrome extension
Track anywhere —
without switching tabs.
The Klausi Chrome extension starts and stops the timer right in the browser. No app switch, no lost context — the time still lands on the right project.
- Start the timer without leaving your tab
- Pick project and service straight from the browser
- Everything in sync with your Klausi account
Belongs together
Time is just the beginning.
Tracked hours flow into projects, budgets, and invoices.
Frequent questions
Questions about time tracking.
Who is Klausi for?
For the self-employed and small teams who bill their time — freelancers, creatives, consultants, agencies. If your hours should turn into invoices, you’re in the right place.
What’s free — and what costs extra?
The core is free forever: timer, weekly calendar, and reports. Pro features like the automatic invoice draft and PDF export are part of the paid building blocks. Details on the pricing page.
Can I switch from Toggl, Clockify & co. — do my old entries come along?
Yes. You can import your existing entries via CSV — Klausi detects the columns automatically and creates projects and clients along the way. There’s no lock-in: you can export again anytime.
How fast am I up and running?
In under a minute. Create an account, start the timer — attach project and client with one click. No setup, no onboarding marathon.
How do tracked hours become an invoice?
Every session knows its project, service, and rate. From that, Klausi builds an invoice draft with finished line items in the finance area — you review it and export it as a PDF, instead of piecing everything together by hand at month end.
What if I forget to start the timer?
No problem. You can create or correct any entry manually at any time. The timer is the shortcut, not a requirement — your time tracking stays complete without it.
What happens to my data — and can I get out again?
Your data is stored GDPR-compliant on EU servers. No lock-in: you can export your time and invoices anytime. What you capture in Klausi is yours.