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Mobile App Development

iOS and Android apps in React Native, or native Swift and Kotlin where the product needs it, with the backend, integrations and release process built alongside.

The app is a client. Most of what makes it work, or fail, lives in the backend and the integrations behind it.

React Native

One codebase for iOS and Android, in TypeScript, sharing logic and components with a React web product where one exists. This is our default for most products because it halves the surface area to maintain without a visible cost in the app.

Where a feature needs native code — a payment SDK, a hardware integration, a background task — we write the native module and keep the rest shared.

  • Shared TypeScript codebase

  • Native modules

  • Works offline

  • Push and deep links

  • Over-the-air updates

Native iOS in Swift

When the product is iOS-first, depends on platform features, or needs the last few percent of performance, we build natively in Swift with SwiftUI or UIKit.

Native builds also make sense for apps that lean on HealthKit, ARKit, CoreBluetooth or other frameworks where a wrapper would get in the way.

  • SwiftUI or UIKit

  • Platform frameworks

  • App Store submission

  • Accessibility

  • TestFlight releases

Native Android in Kotlin

Native Android in Kotlin with Jetpack Compose for products that are Android-first or need deep platform integration: background services, device management, hardware peripherals.

We handle the range of devices and OS versions Android brings, with a tested device matrix rather than an assumption.

  • Jetpack Compose

  • Device integration

  • Play Store rollouts

  • Device test matrix

  • Crash monitoring

Backend and APIs for mobile

Every app needs a backend: authentication, a data API, push, file storage, payments, and integrations with the systems the business runs on. We build it in Node.js on AWS alongside the app, so the two are designed together and released together.

Payments, ordering, clinical data and property systems are integrations we have built behind apps before; see the industry pages for the detail.

  • Mobile authentication

  • REST or GraphQL

  • Push services

  • In-app payments

  • System integrations

Questions we get on the first call

React Native by default: one TypeScript codebase, shared with web where there is one, and native modules where a feature needs them. Native Swift or Kotlin when the product is single-platform, depends heavily on platform frameworks, or needs performance a bridge would cost.

It depends on scope, but the backend and integrations usually determine the timeline more than the screens do.

Yes: listings, review, phased rollout and the rejections that come with a first submission. We set up TestFlight and Play internal testing so releases are routine.

Yes, on a monthly or hourly agreement: OS updates, dependency upgrades, crash triage, and new features from the roadmap.

Four ways to
work with us

ecommerce shipping solutions

A defined project

A defined integration or product, priced and scheduled up front, delivered with the test suite and infrastructure code you keep.

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Engineers on your team

Engineers who join your team, your code and your daily meetings for as long as the roadmap needs them.

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Ongoing support

We keep the integrations you run working: monitoring, vendor updates, new connections and month-end support.

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Taking over existing systems

A system or integration nobody wants to touch: we review it, make it stable, then build on it.

What clients say

Tell us which systems
you run.label_leaf

An engineer replies within one business day, with questions rather than a pitch.

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