Time Tracking and Invoicing Software in One Tool
Track time. Bill clients. Get paid.
Stop paying for one app to track hours and another to invoice them. InvoiceKits puts invoice time tracking and billing in the same place — start a timer, log your billable hours, and turn them into a professional invoice with one click.
No signup to create an invoice. Free plan includes 1 active timer, no credit card required.
Currently tracking
Website Development - Acme Corp
02:34:17
@ $150/hr = $385.71
Unbilled This Week
12.5 hours
Value
$1,875
Time Tracking and Invoicing, Finally in the Same Place
Most freelancers and small teams piece together their workflow from two or three tools: a time tracker for billable hours, a separate invoice generator for billing, and a spreadsheet to make sure nothing slips through. Every handoff between those tools is a place to lose money — hours that never get copied over, a client who gets under-billed, a subscription you forgot you were paying for.
InvoiceKits is time tracking and invoicing software built as a single workflow. You start a timer against a client, watch the billable amount add up in real time, and when the work is done you convert those entries into a professional invoice without retyping a thing. That's the whole point of invoice time tracking — the hours you track are the hours you bill, automatically.
It works as hourly billing software for consultants and agencies, as a time tracker with invoicing for freelancers, and as free time tracking and invoicing for anyone just getting started. And because it's part of the full InvoiceKits suite, the same time entries can flow through AI line-item generation, voice-to-invoice, recurring billing, and automated payment reminders.
The Billing Gap That Costs You Money
Freelancers lose an average of 5+ hours per week to unbilled time. Time tracking and invoicing should be seamless.
Using Separate Tools
- Track time in one app, invoice in another
- Manually copy hours to invoices
- Forget to bill tracked time
- Pay for multiple subscriptions
Result: Lost revenue from unbilled hours
With InvoiceKits Time Tracking
- Track time and invoice in one place
- One-click bill-to-invoice workflow
- Dashboard shows unbilled hours
- Included in your InvoiceKits plan
Result: Every billable hour gets invoiced
How Time Tracking and Invoicing Works
From timer to invoice in three simple steps
Start the Timer
Click the timer button on your dashboard. Add a description and select the client you're working for.
Start Timer
One click to begin
Track Your Work
The timer runs in real-time as you work. See elapsed time and estimated billable amount at a glance.
01:45:30
$262.50 earned
Bill Your Time
Select unbilled entries and convert them to a professional invoice with one click. Choose detailed or summary format.
Time Tracking and Invoicing Software Compared
Plenty of tools track time. Most make you bill somewhere else. Here's how InvoiceKits stacks up against popular time trackers and standalone invoice generators.
| Capability | InvoiceKits | Toggl Track | Harvest | Clockify | Wave / generic generators |
|---|---|---|---|---|---|
| Built-in time tracking | ✓ | ✓ | ✓ | ✓ | — |
| Built-in invoicing | ✓ | — (integrations) | ✓ | ~ (paid) | ✓ |
| One-click time → invoice | ✓ | — | ✓ | ~ | — |
| AI line-item generation | ✓ | — | — | — | — |
| Voice-to-invoice | ✓ | — | — | — | — |
| Create an invoice with no signup | ✓ | — | — | — | ~ |
| Free plan | ✓ | ✓ | ~ (limited) | ✓ | ✓ |
✓ built in · ~ partial or paid-tier · — not available. Competitor capabilities as of 2026; check each vendor for current details.
The takeaway: dedicated time trackers like Toggl are great at tracking but hand billing off to another tool. Full suites like Harvest do both but cost more and skip AI. InvoiceKits is the one place you can track an hour and turn it into a paid invoice — with AI and voice along the way.
Powerful Time Tracking Features
Everything you need to track and bill your time
Real-Time Timer
Live HH:MM:SS display with instant start/stop. Timer persists across page navigation.
Manual Entry
Forgot to start the timer? Add time entries manually with hours and minutes input.
Client Association
Link each time entry to a specific client for organized tracking and easy invoicing.
One-Click Invoicing
Convert time entries to invoices instantly. Choose detailed or summary line items.
Status Tracking
Track entry status: unbilled, invoiced, or paid. Never lose track of billable time.
Dashboard Widget
Start timers right from your dashboard. See unbilled hours and value at a glance.
Two Ways to Bill Your Time
Choose the format that works best for your clients
Detailed Mode
Creates one line item per time entry. Perfect for clients who want to see exactly what you worked on.
Summary Mode
Groups entries by description into single line items. Cleaner invoices for clients who prefer simplicity.
Who Uses Time Tracking and Invoicing
If you bill by the hour, this is for you
Freelancers & Contractors
A free time tracker with invoicing built in. Track the hours you work, then bill them as a polished invoice — no copy-paste, no second subscription.
Consultants & Agencies
Hourly billing software for multi-client work. Run separate timers per project, keep retainers organized, and invoice each client from their own tracked hours.
Small Service Teams
Time billing and invoicing software the whole team can use. Shared clients, shared invoices, and a clear view of unbilled hours across everyone.
Time Tracking on Every Plan
Active timer limits by plan — invoicing included on all of them
Free
1
active timer
Perfect for solo work
Pro
5
active timers
For multi-project work
Business
Unlimited
active timers
For teams
No credit card required. Free plan includes 1 active timer.
Frequently Asked Questions
What is time tracking and invoicing software?
Time tracking and invoicing software combines a timer for billable hours with invoicing in one tool. Instead of tracking time in one app and billing in another, you start a timer, log hours against a client, and convert those entries straight into a professional invoice. InvoiceKits does all of this in one place, so every tracked hour gets billed.
Is there free time tracking and invoicing software?
Yes. InvoiceKits includes free time tracking and invoicing. The free plan gives you one active timer, manual time entry, the bill-to-invoice workflow, and professional invoice PDFs. You can create your first invoice without even signing up, and no credit card is required to start.
How does the bill-to-invoice feature work?
After tracking time, select the unbilled entries you want to invoice and click 'Bill Time'. You can choose detailed line items (one per time entry) or summarized items (grouped by description). The invoice is automatically populated with your hours, rates, and totals.
How is InvoiceKits different from Toggl, Harvest, or Clockify?
Most time trackers are built around reporting and integrations, then bolt on invoicing or push you to a separate billing tool. InvoiceKits is invoicing-first: time tracking feeds directly into professional invoices, and you also get AI line-item generation, voice-to-invoice, and a no-signup invoice creator. It's the fastest path from a tracked hour to an invoice your client can pay.
Can I use it as hourly billing software for clients?
Yes. Set a default hourly rate, track time against each client, and the timer shows the billable amount in real time. When you're ready to bill, convert the hours to an invoice with your rate already applied. It works for hourly billing, retainers, and mixed fixed-fee plus hourly invoices.
Can I track time for multiple clients?
Yes. Each time entry can be associated with a specific client. When billing, you filter by client and create a separate invoice for each. The time entry list shows all of your tracked time organized by client and status.
Can I add time entries manually?
Yes. In addition to the real-time timer, you can add entries manually by entering hours and minutes. This is useful for logging time retroactively or when you forget to start the timer.
Part of the Complete AI Invoicing Suite
Combine time tracking, AI text, and voice for the fastest invoicing workflow
Stop Losing Billable Hours
Track every minute of work and convert it to invoices with one click. Never leave money on the table again.
No signup to create an invoice. Or sign up free to start the live timer — 1 active timer, no credit card.