Cross-Platform App Development Agency UK

Cross-Platform App Development
React Native & Flutter UK

One codebase. Two platforms. React Native and Flutter apps that deliver near-native performance on iOS and Android simultaneously — reducing cost by up to 40% and time to market by 35%.

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Why Choose This?

Why Choose Cross-Platform Development?

Cross-platform development lets you reach iOS and Android users simultaneously with a single, shared codebase — dramatically reducing development time, cost, and ongoing maintenance overhead.

  • Up to 40% cost reduction vs building two native apps separately
  • Single codebase — faster updates and lower ongoing maintenance
  • Near-native performance for most app categories
  • Faster time to market — reach iOS and Android simultaneously
  • Large talent pool and strong open-source ecosystems
  • Ideal for startups, MVPs, and content-driven applications
Our Stack

Technologies & Tools We Use

React Native

Meta's JS framework with a massive ecosystem and near-native performance.

Flutter

Google's Dart-based framework for pixel-perfect UIs on any platform.

Expo

Rapid React Native development with managed build pipelines.

Native Modules

Bridge to platform-specific APIs when native features are required.

Our Process

How We Deliver Your Project

A proven 6-step process refined over 200+ successful deliveries across the UK.

1

Framework Selection

We recommend React Native vs Flutter based on your team and app.

2

UI/UX Design

Platform-adaptive designs that feel native on both iOS and Android.

3

Cross-Platform Build

Agile sprints with builds delivered to both TestFlight and Play Console.

4

QA on Both Platforms

Rigorous testing on iOS and Android devices, simulators, and emulators.

5

Dual Store Launch

Simultaneous App Store and Google Play submission and management.

6

Unified Support

Single maintenance retainer covering both iOS and Android updates.

FAQ

Common Questions — Answered

React Native is better if your team has JavaScript expertise or you need a large NPM ecosystem. Flutter is better for pixel-perfect custom UIs and consistently high performance across devices. We assess your specific needs and recommend the right framework during the discovery call.
For 85% of app categories — yes. Cross-platform apps can achieve near-native performance and UX. The exceptions are highly graphics-intensive games, apps requiring cutting-edge platform-specific APIs, or apps where micro-optimisation of battery/memory is critical.
Cross-platform apps typically cost 30–40% less than building two separate native apps. Expect £10,000–£25,000 for simple apps, £25,000–£90,000 for mid-complexity, and £90,000+ for enterprise-grade cross-platform apps.
Yes. React Native and Flutter both have access to native APIs through bridges and plugins — including camera, GPS, push notifications, biometrics, Bluetooth, NFC, and more. Very few device capabilities are inaccessible.
Start Your Project

Build Once, Ship Everywhere

Get a free consultation and project estimate. We respond within 24 hours.

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Related Services
iOS App Development
Native Swift development when maximum iOS performance is required.
Android App Development
Native Kotlin development for the widest Android device compatibility.
Web App Development
Progressive Web Apps and React-based web platforms to complement your app.
UX/UI Design
Platform-adaptive design systems that feel at home on iOS and Android.
ASO for Both Stores
Optimise your app's listing on both App Store and Google Play simultaneously.
AI Features
Add cross-platform AI features and chatbots powered by OpenAI.
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