Spec & architecture
User flows, data models, API contracts, and business logic defined before anything is built. The brief is what makes the build fast without making it fragile.
Web app development, from idea to launch.
We design and build web apps, client portals and internal tools that people enjoy using. From the first idea to a working product, our UK team brings the design, development and integrations together.
- Product strategy & UX
- Web apps & internal tools
- Integrations & ongoing care
Web apps, portals and internal tools
A clear plan, useful screens and the connections behind them. We work through the details with you, so the finished product is ready for real people.
A clear path through your product.
Each screen helps people understand where they are and what to do next.
AI-assisted execution
Cursor used to execute cleanly against the spec. AI accelerates the mechanical work — Hilvy handles every decision that matters.
Backend
Xano for API-first backends — auth, data models, endpoints, business logic. Neon (PostgreSQL) where full SQL control is needed.
Design & frontend
The interface is designed properly — not scaffolded and shipped. Webflow or custom React, built to feel polished and intentional. AI speeds up the build, not the thinking behind how it looks and feels.
Automation
Make connecting the app to business operations. Stripe, Twilio, OpenAI — integrated via the backend with proper error handling.
Web & mobile
Web apps first — faster to ship and easier to iterate. Where native is the right call, Hilvy builds with Expo or Despia, connected to the same backend stack.
A feel for our work.
A short look at the websites we design and build.
A clear route from idea to production
The engagement is structured around decisions and releases, not an open-ended development backlog. You know what is being built, what it costs, and what success looks like before execution starts.
- Specification and architecture
- 1–2 weeks
- Typical focused MVP build
- 3–6 weeks
- One connected product stack
- Web + mobile
- Direct access to the delivery team
- UK + remote
Product specification
Turn an idea, workflow, or rough brief into a build-ready product plan.
- User journeys and edge cases
- Data model and API contracts
- Prioritised release scope
Focused MVP build
Ship a polished first release that real users can adopt and your team can operate.
- Responsive product interface
- Authentication, data, and payments
- QA, analytics, and launch support
Ongoing product partner
Improve the product after launch with a team that already knows the architecture.
- Roadmap and iteration sprints
- Monitoring and bug fixes
- New integrations and features
Tools behind your app
A connected setup, chosen around the way your team works.
Common questions about app development
Your project is in the right hands
A wealth of experience across a range of disciplines — from front-end development and backend engineering to QA, strategy, and beyond.
7 specialists·50+ projects·5★ rated
Have an app to build? Let's talk.
Bring the brief, the workflow, or just the problem. We'll tell you what belongs in the first release and what it will take to build properly.