WhatsApp invoice app for UK tradespeople

Start the job in WhatsApp. End it in WhatsApp. Invoice ready to send.

Start free trial How it works

How does it work?

Text "Start job: Smith Plumbing, 14 Oak Street, bathroom refit". As you work, text "Materials: £45 copper pipe" — every cost is logged against the job. When you're finished, text "END JOB". GraftG calculates duration × your hourly rate + materials + VAT, and offers you an invoice PDF.

What do the PDFs look like?

Your business name, VAT number, bank details for payment. Invoice number auto-incremented. Payment due in 30 days as standard.

How do I know my margin?

Live running total during the job. No surprises when you cost it up.

Is invoicing included in every plan?

Every GraftG plan includes the full Job Tracker — plans start at £14 per month, first month free.

What it looks like

Real WhatsApps. Real replies.

Start job: Smith Plumbing, 14 Oak Street, bathroom refit
Job started ✓
Smith Plumbing · 14 Oak Street
Started: 14:23

Send materials as you go:
"Materials: £45 copper pipe"

Type END JOB when you're done.
END JOB
Job complete ✓

Smith Plumbing · 14 Oak Street
Duration: 6h 42m
Labour: £268.00
Materials: £165.00
VAT (20%): £86.60
Total: £519.60

Reply INVOICE to generate PDF

🧮 Free calculators

🧮 VAT Calculator⏰ Late Payment Interest📈 Profit Margin View all →

Products

Built for tradespeople

Your tools, one WhatsApp number. Solo from £14/month (intro price) — first month of Solo free.

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Mileage Logger
Included in every plan
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Quote Builder
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Receipt → MTD
Included in every plan
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Job Tracker
Included in every plan
⭐
Google Review Chaser
Pro plan (£24/mo)
💰
Late Payment Chaser
Pro plan (£24/mo)

See pricing →

Try it free

Get started