From marketing website to full invoicing product
Built QuickBilling's marketing site and invoicing product so freelancers could manage invoices without a client portal.
- Marketing → product
- 6 months
- Pricing tiers
- 3
- Languages
- 4
- Industry
- B2B SaaS
- Duration
- 6 months
- Delivery model
- MVP sprint
- Marketing site to product
- 6 months
Overview
QuickBilling targets freelancers and solo businesses in the US, Europe, and worldwide. QuickBilling needed both a marketing presence and a production-ready invoicing product. The goal: create, send, and track invoices in seconds — no client portal required. SolutionPlus delivered the marketing site at quickbilling.io and the full product at app.quickbilling.io.
The challenge
Freelancers face common billing friction: invoices lost in email threads, no visibility into whether clients opened them, spreadsheets for customer management, and clients needing accounts just to pay. QuickBilling needed to solve all of this while staying simple.
Invoices lost in email threads
No idea if clients even opened an invoice
Spreadsheets for customer management
Clients need accounts just to pay
Overpaying for features not needed
- User research
- Interviews with freelancers to map pain points and validate core workflows
- Scope definition
- MVP vs future phases: invoicing, templates, analytics, API — prioritized by impact
- Technical requirements
- Multi-currency, multi-language, webhooks, sandbox, and idempotency for integrations
- Brand alignment
- Marketing site and product share consistent messaging and UX patterns
Our approach
SolutionPlus designed and built both the marketing website and the product in parallel. We started with a clear value proposition: frictionless invoicing built for speed, not complexity. The marketing site at quickbilling.io communicates features and pricing; the product at app.quickbilling.io delivers them.
“Focus on your work, not chasing payments.”
What we built
Discovery & requirements gathering
Before writing any code, we mapped user needs, defined scope, and aligned technical requirements with business goals.
User interviews with freelancers to validate pain points and workflows
Feature prioritization: MVP (invoicing, templates) vs future phases (analytics, API, payments)
Technical spec: multi-currency, multi-language, webhooks, REST API, sandbox environment
Stakeholder alignment on marketing site and product messaging
Sprint planning and delivery milestones for the 6-month timeline
Marketing site (quickbilling.io)
A conversion-focused marketing website showcasing features, pricing, and benefits.
Homepage with clear value proposition and feature highlights
Feature pages: Analytics, Templates, API, Security, Branding, Payments (coming soon)
Simple transparent pricing: Free, Premium ($15/mo), Unlimited ($30/mo)
FAQ and documentation sections
Contact and newsletter signup
Product (app.quickbilling.io)
A full invoicing platform with professional templates, analytics, multi-workspace, and developer API.
Professional invoicing with multiple templates and custom template builder
Detailed analytics: view counts, IP, location, device, browser tracking
Multi-workspace for managing multiple businesses under one account
Custom branding and white-label options
REST API with webhooks, sandbox, and idempotency
Multi-language (EN, DE, FR, ES) and multi-currency (USD, EUR, GBP, INR)
Enterprise-grade security: AES-256, TLS 1.3, SOC2 Type II, 99.99% uptime
Architecture & tech stack
The stack was chosen for speed, maintainability, and developer experience — not trend or familiarity.
Development process & delivery
We followed a structured delivery model with clear milestones, regular demos, and iterative feedback.
- Marketing site to product
- 6 months
- Pricing tiers
- Free, Premium, Unlimited
- Languages supported
- 4 (EN, DE, FR, ES)
- Webhook events
- 30+
- Security
- AES-256, SOC2 Type II
Sprint-based delivery
2-week sprints with demos and scope adjustments based on stakeholder feedback.
Parallel tracks
Marketing site and product developed in sync, sharing design system and copy.
API-first approach
REST API and webhooks designed early so integrations could start before UI polish.
Security by default
AES-256, TLS 1.3, and SOC2 Type II considerations from day one.
Why this engagement worked
We built for the target user from day one: freelancers who want to spend less time invoicing and more time working. No accounting jargon, no unnecessary complexity.
Product-first design
Every feature was designed around real freelancer workflows — create, send, track, get paid.
Marketing and product in sync
The marketing site and product shared the same value proposition, ensuring consistent messaging.
Developer experience
REST API, webhooks, sandbox, and idempotency built in for programmatic invoicing.
Security by default
Enterprise-grade encryption and compliance from the start, not as an afterthought.
What made this different
Typical:Jumped straight to design without validating freelancer pain points
Ours:User interviews and workflow mapping before any wireframes
Typical:Built marketing site and product in isolation with different messaging
Ours:Parallel development with shared value proposition and design system
Typical:API added as an afterthought
Ours:REST API, webhooks, and sandbox designed from the start
Typical:Fixed scope with no room for feedback
Ours:Sprint-based delivery with regular demos and scope adjustments
Technologies & services
- React
- TypeScript
- Next.js
- REST API
- AWS
“A freelancer invoicing tool should be frictionless — create, send, get paid.”
See it live
Visit the website and product we helped build — still running in production today.
Get in touch
Ready for similar results?
Let's talk about how we can turn your challenges into success stories.
Germany, UAE & Pakistan
One international team with clear ownership and senior engineering — never blackbox outsourcing.
EU & US timezone overlap
Daily overlap with teams in Germany and the US — synchronous when it matters.
From MVP to scale-up
One partner across AI, web, mobile, and UX — through every stage of your product.
Email us
admin@solutionplus.io
Response time
Within one business day