Mobile App Development

Cross-platform Apps

Ship one app that runs natively on iOS and Android from a single React Native or Flutter codebase—without the compromises that make cross-platform apps feel like a compromise.

One efficient codebase with a native-quality feel.

Cross-platform Apps services by Integr8e
Built for outcomesCross-platform Apps
One codebase
two platforms
Native-feel
on iOS & Android
Dual-store
release ready
01

Quick answer

What is cross-platform app development?

Cross-platform app development builds one app from a single codebase—typically in React Native or Flutter—that runs on both iOS and Android, instead of building two separate native apps. Integr8e delivers this end to end: strategy, UX, engineering, device testing, and submission to both the App Store and Google Play.

  • React Native & Flutter engineering
  • One codebase for iOS & Android
  • Native-feel UI on both platforms
  • App Store & Google Play submission handled

Business outcomes

Built to launch on iOS and Android together, not twice.

Integr8e approaches cross-platform apps as a business capability—not an isolated technical task. Priorities stay connected to the users, operations and results behind the work.

01

One app, two platforms, one budget

Ship iOS and Android from a single React Native or Flutter codebase instead of funding two separate native teams and two release schedules.

02

Native-feel UI without the wrapper feeling

Use platform-aware components and native modules where it matters—camera, biometrics, payments—so the app doesn't feel like a web page in a shell.

03

Faster iteration across both platforms

Ship a feature once and release it on both app stores together, instead of building and testing the same logic twice.

04

Full ownership of the code and both store accounts

Receive maintainable React Native or Flutter source code, App Store Connect and Google Play Console access, and documentation for a product you control.

What we deliver

Cross-platform app development services from strategy to both app stores.

One connected team covers the decisions and delivery work needed to move from uncertainty to a dependable outcome.

01

Discovery & framework selection

Assess your performance, timeline and budget requirements to confirm whether React Native, Flutter, or native development is actually the right call.

02

UX for two platforms at once

Design interaction patterns that respect both Apple's Human Interface Guidelines and Google's Material Design, instead of forcing one platform's conventions onto the other.

03

Cross-platform engineering

Build the shared codebase in React Native or Flutter, using native modules for camera, biometrics, payments and other hardware-dependent features.

04

Native module & API integration

Bridge platform-specific APIs, push notifications and third-party SDKs that don't come out of the box with the cross-platform framework.

05

Device & dual-store quality assurance

Test across iPhone, iPad and Android devices, screen sizes and OS versions, then validate against both App Store and Google Play review guidelines.

06

Dual-platform release & growth

Manage App Store Connect and Google Play Console together, monitor crashes on both platforms, and prioritise updates using shared usage data.

Is this the right fit?

Best suited for founders and product teams who need iOS and Android from one budget and one codebase, without sacrificing the performance and platform feel users expect from a native app.

Not every challenge needs the same team or solution. We start by testing the business case, current constraints and fastest credible route to value—then recommend a scope that fits the evidence.

Discuss your requirements

Delivery architecture

A controlled path from concept to a live release on iOS and Android.

The plan adapts to your context, while short feedback loops and visible milestones keep the engagement controlled.

  1. 01

    Discover

    Define users, core journeys, target platforms and whether React Native, Flutter or native is the right technical fit.

  2. 02

    Design

    Prototype navigation and interaction that works within both Apple's and Google's design guidelines before engineering starts.

  3. 03

    Build

    Develop the shared codebase in React Native or Flutter in short iterations, with a working build on real iOS and Android devices at every milestone.

  4. 04

    Assure

    Test devices, screen sizes, OS versions, accessibility and performance on both platforms ahead of submission.

  5. 05

    Launch & grow

    Submit to the App Store and Google Play together, monitor crashes and adoption on both platforms, and prioritise updates using production evidence.

Technology context

Tools chosen around the problem—not the trend.

We select platforms against security, scale, team fit, integration needs and the full cost of ownership.

  • React
  • TypeScript
  • Firebase
  • Supabase
  • REST APIs
  • SQLite

Related expertise

Complex initiatives often cross disciplines. Explore closely related capabilities or let us recommend the smallest effective team.

Frequently asked questions

Answers about cross-platform apps.

Need an answer specific to your environment? Share the context and our team will help you identify a practical next step.

What is cross-platform app development?

Cross-platform app development builds one app from a single codebase—typically in React Native or Flutter—that runs on both iOS and Android, instead of building two separate native apps. Integr8e delivers this end to end: strategy, UX, engineering, device testing, and submission to both the App Store and Google Play.

What cross-platform app development services does Integr8e provide?

Integr8e designs and builds cross-platform apps in React Native or Flutter, including UX design for both iOS and Android conventions, native module integration for hardware features, backend and API integration, device testing, and App Store and Google Play submission and support.

Should I choose React Native or Flutter for my app?

React Native suits teams that want to share code and skills with an existing React web product and need broad access to native modules and libraries. Flutter suits apps where a highly custom, pixel-consistent UI matters more than reusing JavaScript skills, since it renders its own UI rather than using native platform components. Integr8e reviews your team, product and performance requirements before recommending either.

Is a cross-platform app slower or lower quality than a native app?

Not when it's built correctly. React Native and Flutter compile to near-native performance for most business apps—forms, lists, navigation, API calls. The gap shows up in apps with heavy animation, AR, or deep hardware integration, where a fully native build still has an edge. Integr8e assesses your specific requirements rather than defaulting to cross-platform for every project.

How much does cross-platform app development cost?

Cost depends on scope—a focused MVP with a handful of shared screens costs less than a full-featured app with native modules, offline support and complex business logic. Building cross-platform typically costs less than building separate native iOS and Android apps, since most of the codebase is shared. Integr8e scopes the requirement first and provides a phased estimate with clear assumptions rather than a generic day rate.

How long does it take to build a cross-platform app?

A focused cross-platform MVP typically takes eight to twelve weeks for both iOS and Android, while a fuller app with integrations and native modules takes longer. Integr8e defines milestones after discovery instead of giving an unreliable one-size-fits-all timeline.

Will you sign an NDA, and who owns the app and code afterwards?

Yes. Integr8e signs an NDA before discovery begins if you need one. Ownership and licensing are set out in the engagement agreement, and you receive the React Native or Flutter source code, App Store Connect and Google Play Console access, and documentation—no hidden dependency on our team to operate or extend the app.

Can you convert an existing native iOS or Android app to cross-platform, or the other way around?

Yes. Integr8e audits the existing app's architecture, native module usage and performance requirements before recommending whether a cross-platform rebuild, a native rebuild, or leaving the current architecture in place is the right move—rather than assuming a rewrite is always the answer.

Can a cross-platform app integrate with our existing systems and APIs?

Yes. Cross-platform apps can connect to CRM, ERP, payment, identity and analytics systems through REST or GraphQL APIs, webhooks, or a dedicated integration layer, with secure authentication built around your existing infrastructure.

What support is available after the app launches?

Integr8e can provide crash monitoring across both platforms, React Native or Flutter version and dependency updates, App Store and Google Play metadata management, performance improvement and feature development after launch, matched to how actively the app is used.

Start with the outcome

Let's make your cross-platform apps initiative concrete.

Tell us what needs to change, who it affects and where the current approach falls short. We'll help shape a sensible next step.

hello@integr8e.com
Project brief

Tell us what you want to build.

Share the essentials and we'll take it from there.