Gamma Invoice and Gamma Quick are free forever — no account required. Start invoicing now →
For Freelancers

Invoice in seconds.
Make better financial calls.

Tell Gamma Invoice what you did and who to charge — it handles the rest. Ask Gamma Quick the financial questions you've been googling for years. Both free. No account needed. No setup.

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Gamma Invoice — How It Works

Type it. Get a PDF. Send it.

You type:

Gamma Invoice extracts:
Client: Acme Ltd  ·  Item: Strategy Consulting  ·  Qty: 3 days  ·  Rate: £600.00
Subtotal: £1,800.00  ·  VAT (20%): £360.00  ·  Total: £2,160.00
Payment terms: 30 days  ·  Due: 14 April 2026

→ Brand colours extracted from your URL  ·  PDF generated  ·  Sent via email
Features

Two tools freelancers actually use.

Live Now · Free

Gamma Invoice

Professional invoices from plain English. No templates, no hourly rate spreadsheets, no chasing clients with PDF attachments from 2011.

  • 1
    Type what you did — in plain language. AI extracts client, items, rate, and terms automatically.
  • 2
    Brand match — paste your website URL and the AI picks up your colours and logo. Your invoice looks like you.
  • 3
    Edit and preview — every field is editable in the live preview panel. Change anything before sending.
  • 4
    PDF + email — download the PDF or send directly to your client from inside the tool.
  • 5
    Shareable link — every invoice gets a UUID link, accessible for 30 days without an account.
Try It Free
Free · Waitlist Open

Gamma Quick

The financial questions freelancers actually have — rent vs buying, what your savings really do over time, how much risk you're taking — answered in seconds.

  • 1
    Rent vs Buy Analyser — stop guessing. Input your numbers and get the rigorous breakeven answer, with a chart.
  • 2
    Compounding Visualiser — see what your ISA, savings account, or investment actually does across time horizons. Bear, base, and bull.
  • 3
    Risk Lens — probability-weighted scenario tool. Know your bear case before you commit to anything.
  • 4
    What-If Chat — ask anything: "what if I take 6 months off?", "what if my rate goes up by £50/day?" Get a quantitative answer.
Join the Waitlist
Free Forever

No login. No card. No catch.

These tools exist to showcase what we build — and because every freelancer deserves professional-grade software without a monthly subscription just to send an invoice.

Always Free

Gamma Invoice

Unlimited invoices. No account required. PDF export and email send included. Shareable links for 30 days.

Always Free

Gamma Quick — Core tools

Rent vs buy, compounding visualiser, risk lens, what-if chat. All four tools, no login. Save history by creating a free account.

£3.99/mo upgrade

Gamma Books

When you want a real family finance app — spending tracking, savings goals, kids' accounts. Optional upgrade, never required.

"We built Gamma Invoice because we were tired of watching talented people spend an hour every fortnight fighting with invoice templates. It should take sixty seconds."
Youssouf Kerzika, Founder — Global Gamma Ltd

Your next invoice: sixty seconds.

Gamma Invoice is live now. No account, no card, no setup. Just type what you did.

Create Your First Invoice