siux

Web & app development

Web and mobile apps, built to be fast and easy to change

We build the product your users see, from marketing sites to complex web apps and cross-platform mobile apps, with code your team can keep working on.

Who it's for

  • You have designs and need a team that can turn them into a product without cutting corners.
  • Your current app is slow and fragile, and every release breaks something.
  • You need to launch on web and mobile without paying for three separate codebases.
  • Your in-house team is at capacity, and the roadmap isn't waiting.

What we do

Web apps

Dashboards, SaaS products and internal tools, built with React and TypeScript.

Marketing sites

Fast, server-rendered sites that do well on Core Web Vitals and are easy to update.

Mobile apps

iOS and Android apps from one React Native codebase, with native code where it matters.

Front-end architecture

Routing, data fetching, state and tests set up so the codebase stays easy to change.

Accessibility

Keyboard support, screen reader semantics and contrast built in from the first component.

Deployment

CI pipelines, containers and preview environments, so shipping is routine.

How the work runs

  1. Scope

    We review the designs, requirements and any existing code, and break the work into milestones.

    You get: A technical plan and a milestone schedule.

    Typically 1 week

  2. Foundations

    We set up the repository, architecture, CI and environments.

    You get: A deployable skeleton with testing in place.

    Typically 1 week

  3. Build

    We ship in weekly increments you can click through on a preview link.

    You get: Working features every week.

    Typically 4–12 weeks

  4. Harden

    We test across devices, fix performance and accessibility issues and load real data.

    You get: A release candidate.

    Typically 1–2 weeks

  5. Launch

    We release, watch the first weeks closely and document everything for your team.

    You get: A live product and a codebase your team can own.

    Typically 1 week

Deliverables and stack

What you receive

  • Production web or mobile app
  • Source code in your repository
  • Automated tests
  • CI/CD pipeline
  • Deployment on your infrastructure
  • Technical documentation

Tools we use

  • React
  • TypeScript
  • TanStack Start
  • Next.js
  • React Native
  • Tailwind CSS
  • Vite
  • Docker

How we work together

A defined project

We scope it and send you a fixed quote.

Hourly, USD 50/h

Our team works through your backlog, week by week.

Questions

Which technologies do you build with?

Mostly React and TypeScript on the web, React Native for mobile and Tailwind CSS for styling. We choose based on your team and product, and we're happy to work in an existing stack.

Can you take over an existing codebase?

Yes. We start with a short review of the code and infrastructure, fix what blocks progress and then work through the roadmap.

Where does the code live?

In your repository and on your infrastructure from day one, so nothing depends on us to keep running.

Do you build native iOS and Android apps?

We build most mobile apps with React Native, which gives you one codebase for both platforms. When a feature needs native code, we write that part natively.

How is a project priced?

We quote a fixed price for a defined project once we understand the scope, or work hourly at USD 50/h. Tell us about your project and we'll reply with a proposal within 48 hours.

Let's talk about your web & app development project.