Arcode · App Development Agency · UK

App Development Agency in the UK

As an app development agency, Arcode helps teams turn a brief into a live product for teams in the UK.

  • Web and mobile apps
  • Shared design systems
  • API and cloud setup

Web and mobile apps from one studio

Plenty of agencies are built around long retainers. What you actually want is a live site, an app in the stores, and users adopting it.

We bring product thinking and engineering together, so structure, UI, APIs, and the launch checklist live in one plan.

If that sounds like your situation, Arcode is set up for brands hiring an app development agency. Cross-platform app development with React Native, Next.js, and production backends.

What you get

  • Web and mobile apps
  • Shared design systems
  • API and cloud setup
  • Store and web launch
  • One studio accountable for the result
  • Design and engineering on the same schedule
  • Support available after launch

How engagement works

As your app development agency, we run a shared backlog, design reviews, and engineering sprints, and you keep one point of contact throughout.

  1. 01

    Discover

    Goals, constraints, data sources, and success metrics, all settled before we touch architecture or prompts. The work for teams in the UK stays tied to the outcome you asked for.

  2. 02

    Design

    System design, AI/tool boundaries, interface direction, and interaction prototypes. You see progress on the critical path every week.

  3. 03

    Build

    Modern stack, clean architecture, evaluated AI behavior, and iterative demos you can react to. Nothing here waits on a handover between separate teams.

  4. 04

    Launch

    Ship, monitor, harden, and keep improving models, tools, and product after go-live. On app development projects we favour practical architecture over trendy defaults.

How we build it, and why

The stack is chosen per project, not applied from a template. For app development agency work these are the defaults, and the reason each one is on the list.

React Native
one codebase for iOS and Android, which halves the surface area you maintain after launch
Next.js
server rendering and static generation in one framework, so marketing pages stay fast and app routes stay dynamic
NestJS
structure and dependency injection on the backend, which keeps a growing API from turning into a pile of route handlers
Firebase
auth, push, and realtime sync without standing up your own infrastructure first
AWS
the services you grow into, once a managed platform stops being enough

What the first weeks look like

  1. Week 1

    Scope and architecture

    Users, data, integrations, and constraints, ending in a written plan for the app development that you approve before anyone opens an editor.

  2. Weeks 2-3

    Design the critical path

    The screens that carry the product, prototyped and clickable. Design and engineering review together, so nothing gets drawn that cannot ship.

  3. Weeks 4-8

    Build in weekly slices

    Every week ends with something on a real URL. web and mobile apps lands early, because the rest of the plan depends on it working.

  4. Launch

    Ship, measure, hand over

    Release, monitoring, analytics, and a documented handover, so your team can carry it without calling us.

Weighing up your options

There are three realistic ways to get this built. Each is the right answer for someone.

A solo freelancer

Cheapest per hour and fine for a contained task. The risk on app development is breadth — one person covering design, backend, infrastructure, and launch usually means one of them is weak, and there is no cover when they are unavailable.

A local agency in UK

Same timezone and a face to meet, which genuinely matters for some teams. You are also paying UK demand for product engineers and AI-capable studios. rates for the whole team including the layers that never touch your app development, and a local shortlist is a small shortlist.

Arcode

A small senior team. The people who scope the app development write the code, you get weekly demos instead of status decks, and the engagement ends when the thing is live and handed over.

Work we have shipped

Better Health Solutions

Frontend · CMS

Clinic website for Dr. Khayami with patient resources, scheduling UX, and educational video.

Responsive chiropractic practice site built at Code Band with Next.js, Redux Toolkit, Video.js, and Strapi content management.

  • · Responsive clinic experience
  • · Appointment-oriented UX
  • · Patient education video
  • · CMS-managed content

Next.js · Tailwind · Redux Toolkit · Strapi · Video.js

Happy Kids Dental

Frontend · CMS

Pediatric dental site with services, patient resources, and appointment-focused UX.

Code Band clinic product using Next.js, Tailwind, Redux Toolkit, Video.js, and Strapi for content and scheduling flows.

  • · Pediatric service pages
  • · Patient resource content
  • · Appointment scheduling UX
  • · Strapi-managed content

Next.js · Tailwind · Redux Toolkit · Strapi · Video.js

Vigorant

Frontend · Accessibility

Accessible web app with reusable components, Redux Toolkit state, and Strapi integration.

Code Band product built with React, Next.js, Tailwind, and Redux Toolkit, focused on accessibility and maintainable UI patterns.

  • · Accessibility-first UI
  • · Reusable component system
  • · Efficient Redux Toolkit logic
  • · Strapi-backed content

Next.js · React · Tailwind · Redux Toolkit · Strapi

Working with teams in UK

UK demand for product engineers and AI-capable studios. Work is remote-first (GMT/BST), with written updates you can read in your own time. We usually collaborate in English.

How we work with UK teams

UK teams get a full working-day overlap: our morning covers your morning, so questions raised at 9am are answered before your standup ends. Most UK clients settle into a Tuesday demo and a Thursday written update.

What UK clients usually need

UK briefs skew towards SaaS platforms, fintech-adjacent products, and replacing ageing internal tools. Several arrive after an agency retainer stopped producing releases.

Contracts, data, and compliance

We invoice in GBP or USD. UK GDPR and data residency come up on almost every project, so we default to EU or UK-hosted data stores and document where personal data flows before the build starts.

Related work

A few projects that line up with app development.

  • Circlin Waitlist

    Product

    Circlin Waitlist

    Multilingual waitlist and referral product for a secondhand fashion brand, covering localization, analytics, and growth loops.

  • VIP Hires

    Product

    VIP Hires

    Recruitment platform with Stripe payments, workflow management, and polished motion-driven UI.

  • Prism Goals

    Product

    Prism Goals

    Accountability platform with dashboards, weekly check-ins, admin tooling, and progress analytics.

Next step

Ready to get moving? Arcode will outline a practical app development plan for teams in the UK in a 30-minute call.