Cross-Platform App Development (Flutter & React Native) | Codelabs
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  • iPhone and Android phone running the same app side by side
  • Developer working with cross-platform code on screen
  • Tablet and phone both showing the same interface
  • Team comparing app behavior across two devices

One Codebase, Native Performance on iOS and Android

Building two separate native apps doubles your development and maintenance cost. We build cross-platform apps with a single shared codebase that ships to both iOS and Android, bridging to native modules where a feature genuinely needs it — without compromising on speed or feel.

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    Single Codebase, Two Platforms

    One codebase built with Flutter or React Native ships to iOS and Android, cutting development time and keeping both versions in sync going forward.

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    Faster Path to Market

    Building once instead of twice means you can launch on both app stores closer together, without doubling your budget or timeline.

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Why Choose Codelabs For Cross-Platform Apps

  • Flutter and React Native expertise

    We choose the framework that fits your project's needs, and build with the same engineering discipline as a native app.

  • One codebase, two stores

    A single codebase means fixes and new features ship to iOS and Android together, instead of building everything twice.

  • Native-level performance

    Where a feature genuinely needs it, we bridge to native modules, so shared code never comes at the cost of feel or speed.

  • Lower long-term cost

    One codebase to maintain means lower ongoing development and QA costs compared to running two separate native apps.

Real Work, Real Results

Mobile App Development
Telemedicine

HUMWELL

HUMWELL needed to reach patients across Pakistan on whichever phone they carried. We built a bilingual healthcare app, in English and Urdu, delivered on both iOS and Android from one shared codebase, with secure data handling for virtual consultations and patient care.

Read Full Case Study
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Our Cross-Platform Development Process

  • Shared UX system

    We design one interface system that adapts sensibly to both iOS and Android conventions, rather than forcing one platform's look onto the other.

  • Cross-platform build

    Development in Flutter or React Native against a single codebase, with native modules bridged in where a feature requires it.

  • QA on both platforms

    We test the shared codebase on real iOS and Android devices independently, since platform-specific quirks can still surface in a cross-platform app.

  • Dual store launch

    We handle submission to both the App Store and Play Store, so both versions launch together rather than weeks apart.

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What's Included

  • Single Shared Codebase

    One codebase built in Flutter or React Native, shipping to both iOS and Android.

  • Native Module Bridging

    Platform-specific native code where a feature genuinely needs it, without compromising the shared build.

  • Independent Platform QA

    Tested separately on real iOS and real Android devices, not just one platform assumed to match the other.

  • Push Notifications

    Cross-platform push notifications wired into your backend and ready to use on both stores.

  • Secure Sign-In

    Modern authentication with encrypted session handling, shared consistently across platforms.

  • Dual Store Submission

    App Store and Play Store submissions handled together, so both versions launch close in time.

  • Shared Design System

    One UI system adapted sensibly to each platform's conventions, rather than forcing one look onto both.

  • Post-Launch Monitoring & Updates

    Crash tracking and iterative updates rolled out to both platforms together.

What Does It Cost?

  • Cross-Platform App
    $8,000 $20,000

    One codebase shipping to both iOS and Android, with a defined feature set.

  • Enterprise
    Custom Quote

    Complex apps with custom backends, integrations or advanced functionality at scale.

Technologies We Use

  • Flutter
    Flutter
  • React Native
    React Native
  • Dart
    Dart
  • TypeScript
    TypeScript
  • Firebase
    Firebase
  • RA
    REST APIs

Cross-Platform App Development FAQs

Common questions about building one app for both iOS and Android.

  • Flutter or React Native — which is better for my app?

  • Will a cross-platform app feel as good as a native app?

    For the large majority of app features, yes — modern cross-platform frameworks render close to native performance. For features that genuinely need it, we bridge to native modules rather than compromising the experience.

  • Is cross-platform development cheaper than building two native apps?

    Generally yes, since a single codebase means less development and QA time compared to building and maintaining separate iOS and Android apps. See our pricing page for typical ranges.

  • Can you convert our existing native app to cross-platform?

    Yes, though it's typically scoped as a rebuild rather than a direct conversion, since native and cross-platform codebases aren't interchangeable. We'll assess your current app and advise on the best path.

Let's Connect With Our Experts

Get valuable consultation from our professionals to discuss your project. We are here to help you with all of your queries.

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