Create professional invoices without spreadsheet work
Enter client and line-item details, calculate totals, and produce a clean invoice.
Edit this starter brief to make it yours, then send it to start for free.
How it works
From idea to invoice generator
Make invoicing repeatable, accurate, and consistent with your brand.
- 1
Define the interaction
Explain who will use the invoice generator, what they enter, and what result they need.
- 2
Try the working flow
First turns line-item editor and automatic totals into an interactive first version.
- 3
Polish the experience
Adjust states, calculations, and printable invoice in plain language as you test it.
- 4
Share the finished tool
Publish a live version people can open and use without a development handoff.
What you can include
The essentials for a strong invoice generator
Common questions
How quickly can I build invoice generator?
You can create a working first version in minutes, then refine the design and functionality by continuing the conversation.
Will I get a working invoice generator or just a design?
First creates a working first version you can use in the live preview. You can then add screens, data, and workflows by continuing the conversation.
Do I need to know how to code?
No. Explain what you need in everyday language. First handles the implementation and shows each change in a live preview.
Can I change it after the first version?
Yes. Ask for changes in chat, review the updated app, and keep refining the design and behavior until it fits your workflow.
Can I use my own content and images?
Yes. Add your real copy, images, files, and business details so the result reflects your product instead of placeholder content.
Can I publish what I build?
Yes. When your app is ready, you can publish it from First and share the live link.
Build your invoice generator now
Start with your goals and workflow. First turns them into a working invoice generator you can refine and publish.
Start building