Productivity SaaSLaunch Pack sample

Freelance Invoice Flow

Lightweight invoicing for solo freelancers.

Create a professional invoice in minutes and always know what is unpaid.

Launch readiness sample

86%

example score

Original brief input

A simple invoicing tool for freelancers who need to create, send, and track professional invoices without complex accounting software.

Positioning

The product is not full accounting software. It is the fast invoice workflow freelancers open when they need to get paid without administrative drag.

Audience: solo freelancers with recurring client work

Differentiator: faster than accounting suites, cleaner than spreadsheets

Primary promise: invoice, send, track, and move on

MVP scope

Client management, invoice builder, line items, taxes and discounts, PDF export, payment status, and a small revenue overview.

Must-have pages: dashboard, clients, invoices, invoice editor

Core entities: users, clients, invoices, invoice items, payments

7-day plan: CRUD first, PDF export second, payment status last

Launch angle

Ask freelancers how they invoice today, show a 60-second create-send-track workflow, and position the product as simpler than accounting suites.

Feedback post: ask what freelancers dislike about invoicing

Demo post: show invoice creation from blank to PDF

SEO target: simple invoice maker for freelancers

Generated asset preview

This is the kind of package a full BSLaunchKit project can expand into.

Idea snapshot

MVP scope

Landing copy

Launch posts

Lead tracker

Landing page copy

Hero

Invoices freelancers can send before the coffee gets cold.

Subheadline

Create clean invoices, export PDFs, and track unpaid clients without opening full accounting software.

Create your first invoice

Product Hunt pack

Tagline

Simple invoicing for freelancers who do not need accounting software.

Maker comment

I built this for solo freelancers who want a faster invoice workflow: create, send, track, and move on.

Lead tracker preview

A simple starting point for tracking outreach, replies, and first opportunities.

Lead	Source	Signal	Status
Freelance designer	LinkedIn	Asked about PDF invoice workflow	Warm
Solo developer	Reddit	Wants recurring client support	Follow up
Copywriter	Direct outreach	Currently using Google Docs	Qualified

Full AI build prompt

A complete prompt that can be pasted into Codex, Cursor, Claude Code, or another coding agent to scaffold the product.

Build a production-ready SaaS called Freelance Invoice Flow.

Goal:
Create a lightweight invoicing app for solo freelancers who need to create, send, export, and track professional invoices without using full accounting software.

Stack:
- Next.js App Router with TypeScript
- Prisma ORM with PostgreSQL
- Auth.js authentication with Google and magic link
- Stripe for paid plans
- Tailwind CSS and shadcn/ui for the interface
- React Hook Form and Zod for forms and validation
- A PDF generation library for invoice exports
- Nodemailer or Resend for sending invoices by email

Core data models:
- User: id, name, email, image, createdAt
- Client: id, userId, name, email, companyName, address, notes, createdAt
- Invoice: id, userId, clientId, invoiceNumber, status, issueDate, dueDate, subtotal, taxRate, discountAmount, total, currency, notes, createdAt, updatedAt
- InvoiceItem: id, invoiceId, description, quantity, unitPrice, total
- Payment: id, invoiceId, amount, paidAt, method, reference

Pages:
- Dashboard: revenue overview, unpaid total, overdue invoices, recent invoices
- Clients: list, search, create, edit, delete
- Client detail: client info, invoice history, outstanding amount
- Invoices: list with status filters paid/unpaid/overdue/draft
- Invoice builder: client selector, invoice number, dates, line items, tax, discount, notes
- Invoice detail: preview, export PDF, send email, mark as paid, duplicate
- Settings: business name, logo, address, default tax rate, invoice numbering prefix
- Billing: Stripe checkout and customer portal

UX requirements:
- Make invoice creation fast and keyboard-friendly
- Use a two-column invoice builder on desktop and single-column flow on mobile
- Show a live invoice preview while editing
- Add clear empty states for no clients and no invoices
- Keep the UI quiet, professional, and focused on admin speed
- Use status badges for Draft, Sent, Paid, Unpaid, and Overdue

Business rules:
- Invoice totals must be calculated server-side
- Invoice numbers must be unique per user
- Overdue status is based on dueDate and unpaid status
- Users can only access their own clients, invoices, and payments
- Failed email sending should not delete or change the invoice

PDF export:
- Generate a clean A4 invoice PDF with business details, client details, line items, totals, due date, and notes
- File name format: invoice-{invoiceNumber}.pdf

Email sending:
- Let the user send the invoice PDF to the client
- Store sent timestamp on the invoice
- Show a toast on success or failure

Acceptance criteria:
- A new user can sign in, create a client, create an invoice with line items, export it as PDF, send it by email, mark it as paid, and see revenue totals update on the dashboard
- The app must be responsive, type-safe, and protect all user-owned resources