Mobile app development
Native iOS and Android, or a single cross-platform codebase in React Native or Flutter. Built for offline, low-end devices and app store review on the first attempt.
Learn moreREACT CODER is a senior-only product engineering studio. We take teams from a rough idea to a live, scalable product — with a fixed scope, a real date, and code you would be happy to inherit.
Strategy, design, engineering and operations under one roof — so nothing gets lost in a handover between three vendors.
Native iOS and Android, or a single cross-platform codebase in React Native or Flutter. Built for offline, low-end devices and app store review on the first attempt.
Learn moreMarketing sites, customer portals, dashboards and multi-tenant SaaS. Fast, accessible, and typed end to end.
Learn moreResearch, flows, wireframes and a production-ready design system. We test prototypes with real users before we write code.
Learn moreAWS, GCP and Azure infrastructure as code, CI/CD pipelines, observability and cost tuning. Deploys become boring.
Learn moreRetrieval, recommendations, document understanding and LLM features wired into your product with sane evaluation and guardrails.
Learn moreAutomated test suites, real-device testing, accessibility audits and load testing so launch week is uneventful.
Learn moreMost projects fail on communication, not code. We run a small number of engagements at a time so the people who scoped your project are the people who build it.
// Nothing ships until every one of these is green.
export const gate = {
tests: 'unit + integration + e2e',
coverage: 85, // minimum %
a11y: 'WCAG 2.2 AA',
perf: { cold_start: 1.8, lcp: 2.5 },
security: 'SAST + dependency audit',
rollback: true,
monitoring: ['crash', 'latency', 'funnel'],
};
export async function canRelease(build) {
const checks = await runAll(gate, build);
return checks.every(c => c.passed);
}
The expensive mistakes happen in week one, not week twenty. So we front-load the thinking.
We start with the problem, not the backlog. Stakeholder interviews, user research, competitive teardown and a technical feasibility pass. You leave with a scoped roadmap and a fixed estimate.
Information architecture, user flows, wireframes, then a clickable high-fidelity prototype in your brand. We test it with real users before a single component is built.
Data model, API contracts, environment strategy, CI/CD, observability and security baseline. Decisions get written down in an architecture record you keep.
Working software at the end of every sprint, deployed to a staging build you can open on your own phone. Demo, feedback, adjust — no six-week silences.
A few of the builds we can talk about publicly.
A card-and-expense app for finance teams. We rebuilt the onboarding flow and cut time-to-first-transaction from 11 minutes to under 3.
HIPAA-conscious patient app with secure messaging, scheduling and medication reminders. Offline-first so rural users are never blocked.
A real-time dashboard tracking 40k shipments a day. Server-driven tables and websockets keep the view under 200 ms from event to pixel.
They ran discovery properly instead of jumping to code, and it saved us a quarter of wasted build. The app shipped on the date they gave us in week one.
The handover was the best I have seen. Documented architecture, a real test suite, and two weeks of pairing with our in-house team before they stepped back.
We came in with a rough idea and left with a product strategy. They pushed back on features we did not need, which is rare for an agency.
Tell us what you are building. You will get a written scope, a timeline and a fixed estimate within five business days — free, and yours to keep whether or not you hire us.