Arcode · App Development Agency · New York

App Development Agency in New York

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

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

Web and mobile apps from one studio

Slides do not launch products. Design, engineering, and launch need to sit with the same team on the same schedule.

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

Most people who reach this page are 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. Nothing here waits on a handover between separate teams.

  2. 02

    Design

    System design, AI/tool boundaries, interface direction, and interaction prototypes. On app development projects we favour practical architecture over trendy defaults.

  3. 03

    Build

    Modern stack, clean architecture, evaluated AI behavior, and iterative demos you can react to. The work for teams in New York stays tied to the outcome you asked for.

  4. 04

    Launch

    Ship, monitor, harden, and keep improving models, tools, and product after go-live. You see progress on the critical path every week.

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 New York

Same timezone and a face to meet, which genuinely matters for some teams. You are also paying New York companies hiring on portfolio proof and production AI. 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

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

Quickee UI Library

Design system · Tailwind

Tailwind component library for React and Next.js with reusable UI patterns inspired by Tailwind UI.

Code Band component kit providing a variety of production-ready Tailwind components with Redux-friendly patterns for React and Next.js apps.

  • · Reusable Tailwind components
  • · React and Next.js ready
  • · Consistent interaction patterns
  • · Faster UI assembly across projects

React · Next.js · Tailwind · Redux

Agile IT Blog

Frontend · Astro

Performance-minded blog maintained in Astro with Markdown, Tailwind, and modular content integrations.

Stellar Stack content site where I improved performance and scalability across modular Astro components and data integrations.

  • · Astro static content pipeline
  • · Markdown-driven posts
  • · Modular component structure
  • · Performance and scalability pass

Astro · Markdown · Tailwind · SCSS

Working with teams in New York

New York companies hiring on portfolio proof and production AI. We work with clients in New York remotely and keep overlapping hours in EST/EDT. We usually collaborate in English.

How we work with New York teams

New York is on ET, so our afternoon covers your morning. In practice that means a scheduled daily window for anything that needs a conversation, and written updates waiting when you start.

What New York clients usually need

New York briefs cluster around fintech, media, and B2B SaaS. A lot of the work is replacing a prototype that got a company to revenue but cannot carry the next stage of growth.

Contracts, data, and compliance

Contracts are usually US contractor agreements with IP assignment and an NDA. Fintech projects get SOC 2 evidence and audit logging scoped into the build rather than retrofitted before a raise.

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 New York in a 30-minute call.