Windsor Harlow Let’s talk

Apps your customers keep using.

From a first prototype to the App Store and Google Play, and every release after. We design the experience, build the app and the services behind it, and set up a release process that keeps updates smooth.

StackSwiftStackKotlinStackReact NativeStackFlutter
What we build

Mobile & app development.

Native and cross-platform apps for iOS and Android — designed, released and improved by the same team.

New iOS and Android apps

Customer apps, booking and ordering tools, field apps and companion apps — scoped to the features people need first.

Cross-platform when it fits

One React Native or Flutter codebase when it saves time without hurting the experience; native Swift and Kotlin when it doesn't.

Offline-ready and connected

Apps that keep working on poor connections, with sync, push notifications, payments and sign-in built in.

Rescue and modernise

Take over an existing app, stabilise it, and move it forward in safe, regular releases.

What you get

Everything you need to launch — and keep going.

  • Product discovery and a clickable prototype
  • Store-ready iOS and Android builds
  • Analytics, crash reporting and push notifications
  • Automated build, test and release pipeline
  • Store listing and release support
  • Documentation and a clean handover
Technology

The stack.

We work in your existing tools where it makes sense.

Native

SwiftSwiftUIKotlinJetpack Compose

Cross-platform

React NativeFlutterTypeScript

App services

Push notificationsIn-app purchasesOffline syncAnalytics

Release

FastlaneTestFlightGoogle Play ConsoleCI pipelines
How We Work

From idea to launch.

01

Define

We agree goals, priorities and a first release worth shipping.

  • Workshops and discovery
  • Architecture review
  • Scoped plan and prototype
02

Build

Working software every week, with demos you can try.

  • Weekly demos
  • Tested release pipelines
  • Decisions written down
03

Operate

We keep it running — or hand it over, fully documented.

  • Monitoring and alerts
  • Runbooks and support
  • Clean handover
Related Work

Built with this.

FAQ

Questions about Mobile apps.

Should we build native or cross-platform?

It depends on the features and the team who will maintain it. We'll recommend one in the first week, with the trade-offs written down — not a default.

Can you take over an app someone else built?

Yes. We start with a short review of the code, release process and crash reports, then agree a plan to stabilise it before adding features.

Do you handle App Store and Google Play releases?

Yes — signing, store listings, review submissions and a repeatable release pipeline so future updates are routine.

Other services

All services