MonkeeToolsThe billing toolkit for freelancers

No signup · Free forever

Marked paid

Just get paid. No account. No upload.

Quote the work, send the invoice, chase the late ones. No signup, nothing uploaded, your data never leaves this device. Your business, clients, and invoices are remembered here, so getting paid takes seconds.

"I love that none of my data is stored on their server." Aaron Martynowicz, Trash Panda junk hauling

Rated 5/5 on G2 by validated reviewers

More tools: timesheets, receipts, packing slips and more

Every document between the work and the money.

One toolkit, one connected trail. Each document hands off to the next, and your business profile and client list carry over everywhere.

  1. 1 Quote Agree the price before you start.
  2. 2 Proof of work Log the hours, or list what is in the box. TimesheetPacking slip
  3. 3You are here Invoice Bill for it, with PDF in one click.
  4. 4 Receipt or fix Confirm payment, or correct a bill. ReceiptCredit note

Invoice details

01

Client

02
Invoicing as Your business

Line items

1 item

Adjustments

03

Finishing details

04
Adds an "I've paid" button to the client link. The client taps it, their email app opens with a prefilled note to you, and the note carries a link that marks this invoice paid in your tracker. Uses the email in your Settings.
Preview updates as you type
Your business
Your contact details
Invoice
INV-001
Bill to
Client name
Client details
Issued
-
Due
-
DescriptionQtyRateAmount
Subtotal$0.00
Discount−$0.00
Tax (0%)$0.00
Total due$0.00
Notes
Thank you for your business.
Payment
Payment terms
FOR AI AGENTS Your agent prepares it, you approve it. No API key needed

Any software agent can pre-fill this invoice generator by opening a link with parameters in the URL fragment (after #). The fragment is processed by the browser and never sent to the server or included in referrers. No signup, no API key, no backend. The invoice builds itself client-side, ready to review and download as PDF. Full guide for agents → Example:

https://monkeetools.pages.dev/#v=1&to=Acme%20Corp&item=API%20integration|10|75&item=Bug%20fixes|3|50&currency=USD&tax=10

Private by construction, not by promise

Most invoice tools keep your business and client details on their servers. MonkeeTools runs entirely in your browser instead: your business profile, clients, and invoice history are stored only on this device, nothing is ever uploaded anywhere, and there is no account to create. Privacy here is not a policy, it is the architecture.