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Cross-platform apps

Cross-Platform App Development Services, One Codebase

Netofficials, an India-based software development company, builds Flutter and React Native apps deployed to both the Google Play Store and the Apple App Store, suited to founders and product managers who need full iOS and Android coverage from a single build.

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Service Overview

Cross Platform App Development Services: One Codebase, Two App Stores

Cross-platform app development is the practice of writing a single shared codebase compiled and deployed to both the Apple App Store, Apple's distribution platform for iOS apps, and the Google Play Store, Google's distribution platform for Android apps. Netofficials, an India-based software development company, builds these apps using Flutter app development and React Native app development, delivering full iOS and Android coverage without commissioning two separate native builds.

Flat illustration of Flutter and React Native icons above Google Play and App Store badges, connected by a shared codebase la
Single codebase submitted as two separate app store listingsConsistent UI and feature parity across iOS and Android devices
Device API access including camera, GPS, push notifications and biometricsFull QA cycle and app store submission handled for both platforms
  • Flutter, Google's open-source UI toolkit, compiles Dart code to native ARM machine code for both iOS and Android.
  • React Native, Meta's open-source framework, renders native UI components from a JavaScript codebase on both platforms.
  • A single cross-platform codebase is submitted separately to Google Play and the Apple App Store as two distinct app listings.
  • Both Flutter and React Native support device hardware access including camera, GPS, push notifications and biometric authentication via platform plugins.
  • Cross-platform development is not suited to apps that require deep AR, VR or NFC hardware integration exclusive to one platform.
  • Cost and timeline depend on the number of screens, user roles, third-party integrations, backend complexity and compliance requirements.

What is covered

Flutter, Google's open-source UI toolkit, compiles Dart code directly to native ARM machine code, producing high-fidelity interfaces on both platforms from a single source. React Native, Meta's open-source framework, renders native UI components from a JavaScript codebase on both iOS and Android. Both frameworks support device hardware access including camera, GPS, push notifications and biometric authentication through platform plugins. Shared logic covers business rules, data handling, authentication and navigation; platform-specific code is written only where device APIs require it.

Who it is for

Cross-platform development suits consumer apps, MVP development, and B2B mobile tools where feature parity across iOS and Android matters more than platform-exclusive capabilities. It is not suited to apps requiring deep augmented reality, virtual reality or NFC hardware integration exclusive to one platform. Netofficials identifies those constraints during project scoping so buyers can decide before work begins.

How delivery runs

Netofficials manages the full delivery cycle: UI/UX design, codebase development, integration with third-party APIs and backend services, quality assurance across both platforms, and app store submission. The client receives two published app listings, documented source code and a handover pack. Cost and timeline depend on the number of screens, user roles, third-party integrations, backend complexity and compliance requirements.

What We Deliver

Concrete deliverables from every cross-platform app project

Netofficials prepares and submits separate listings to the Google Play Store and the Apple App Store from a single shared codebase. Submission work covers store metadata, screenshots, content ratings and platform compliance checks. Buyers receive two approved, downloadable app listings without managing two independent release pipelines.
UI/UX design, the process of designing user interfaces and experiences, is scoped before development begins. Wireframes and a component library are agreed for both iOS and Android screen sizes. Flutter's widget layer or React Native's component model then implements that design, keeping visual language and navigation consistent across platforms without maintaining two separate design files.
Both Flutter, Google's open-source UI toolkit, and React Native, Meta's open-source framework, expose device capabilities through platform channels and community packages. Delivered integrations include camera, GPS, push notifications and biometric authentication. Buyers building field-service, on-demand or consumer apps receive these integrations as tested, production-ready modules, not proof-of-concept wrappers.
Netofficials documents the choice between Flutter and React Native before a line of code is written. Flutter compiles Dart, its programming language, to native ARM machine code and owns its rendering layer. React Native renders native UI components from a JavaScript codebase. The written recommendation covers UI complexity, third-party integration needs and long-term maintainability so your team understands the rationale.
At project close, the full repository is transferred to the client: source code, assets, environment configuration, third-party licences and build scripts. Netofficials retains no ownership over the codebase or intellectual property. The repository is structured so an internal team, a different agency or a continuing Netofficials support arrangement can all pick it up without rework.
Apple and Google release major OS updates on annual cycles that can break existing app behaviour or violate updated store policies. Netofficials provides post-launch support covering iOS and Android version compatibility, Flutter or React Native framework upgrades and store policy changes. Support scope, response times and duration are defined in writing before the engagement starts.

How We Deliver

How a cross-platform app project runs from scope to store release

  1. 1

    Scoping and Integration Mapping

    Netofficials runs a structured discovery session to document user roles, target OS versions, third-party APIs, and backend dependencies. Your product manager or CTO reviews and approves a written scope document before design begins. This document governs feature scope, platform constraints, and acceptance criteria throughout the project.

  2. 2

    UI/UX Design System

    Designers build one adaptive design system that respects iOS Human Interface Guidelines and Android Material Design conventions simultaneously. You receive annotated wireframes followed by high-fidelity mockups for sign-off. Interaction patterns, typography, and component states are confirmed in writing before a single line of code is written.

  3. 3

    Cross-Platform Development

    Engineers write a shared codebase in Flutter, Google's open-source UI toolkit using Dart, or React Native, Meta's open-source framework using JavaScript, based on the framework agreed at scoping. Camera, GPS, push notifications, and biometric authentication are integrated via platform plugins. You attend sprint reviews to give feedback before features are finalised.

  4. 4

    QA on Physical Devices

    The QA team tests on physical Android and iOS handsets across multiple OS versions, not emulators alone. Test runs cover device API behaviour, offline states, performance under low memory, and OS-specific rendering differences. You receive a structured test report listing each scenario, its result, and any resolved defects before submission.

  5. 5

    Dual Store Submission

    Netofficials prepares two separate app listings, one for the Google Play Store and one for the Apple App Store, including metadata, screenshots, and compliance documentation. The team manages the submission process and responds to any store review feedback. You receive confirmation of live status on both platforms at project close.

Technology Stack

Frameworks and tools Netofficials uses to build cross-platform apps

Cross-Platform Frameworks and Languages

FlutterDartReact NativeJavaScriptTypeScriptExpo

Device Hardware and Native APIs

Camera APIGPS and Location ServicesPush NotificationsBiometric AuthenticationBluetooth LENFCAccelerometerDeep Linking

Back End, APIs and Data

Node.jsPythonREST APIsGraphQLFirebasePostgreSQLMongoDBWebSockets

Testing, CI/CD and Store Delivery

Flutter TestDetoxJestAppiumFastlaneGitHub ActionsGoogle Play StoreApple App Store
Who This Service Is For

Buyer Situations This Service Serves

Founders Launching a Consumer or Marketplace App on a Fixed Budget

The problem

You need iOS and Android coverage from day one, but two separate native builds mean two separate teams, two codebases to maintain, and a launch date that keeps moving.

The outcome

Netofficials builds one Flutter or React Native codebase and submits it as two distinct listings to the Apple App Store and the Google Play Store, so both audiences receive the same tested product from a single delivery track.

Discuss your project

Product Managers Deploying Tools Across Mixed-Device Workforces

The problem

Your staff or clients carry a mix of Android and iOS devices. You need camera access, GPS, push notifications and biometric authentication to work consistently across every handset, without owning two parallel codebases.

The outcome

You receive one production-ready app that accesses device hardware through platform plugins on both operating systems, with a single codebase your team can update, test and release without duplicating effort across platforms.

Discuss your project

Startups Validating an MVP Before Committing to Native Development

The problem

You want real user feedback from iOS and Android audiences simultaneously before investing in a full build, and you need a structured delivery process that does not create technical debt you will have to discard later.

The outcome

Netofficials delivers a production-ready MVP through discovery and iterative builds, giving you live data from both platforms at once. If your validated roadmap later requires deep AR, VR, NFC or platform-exclusive hardware integration, the right path is dedicated native development, Netofficials offers both iOS app development and Android app development as separate services for those cases.

Discuss your project
Industry Applications

Cross Platform App Development Services by Industry

Your industry not listed? Tell us about it

Retail and E-Commerce App Development

Netofficials builds a single Flutter or React Native codebase covering product browsing, cart management, payment gateway integration and push notification campaigns, published to both Google Play Store and Apple App Store from one submission pipeline.

Explore

On-Demand and Logistics App Development

Field teams and drivers use a cross-platform app for real-time GPS tracking, job assignment, proof-of-delivery photo capture via device camera APIs and offline form submission when connectivity is unavailable.

Explore

Healthcare Mobile App Development

Patient-facing apps built on Flutter handle appointment scheduling, practitioner messaging, document upload and biometric authentication, reaching users on both iOS and Android without maintaining two separate native codebases.

Explore

EdTech Cross Platform App Development

A single React Native or Flutter build delivers video course playback, learner progress tracking, quiz modules and push notification reminders to students on any iOS or Android device through one shared codebase.

Cost & Timeline

What affects the cost and timeline of cross platform app development services

Cost depends on the scope factors listed below, not on a fixed price list. Timeline is shaped by design complexity, integration availability and app store review cycles. Netofficials provides a scoped estimate after reviewing a short project brief, so you know what to budget before committing.

Get a scoped estimate
Number of Screens and User Roles

Each additional screen requires design, build and test cycles. Multiple user roles, such as admin, customer and driver, multiply that effort. Reducing scope to core flows for an MVP lowers both cost and timeline.

Third-Party Integrations

Connecting to payment gateways, mapping services, CRMs or analytics platforms adds integration and testing work. Well-documented REST APIs reduce effort; legacy or undocumented APIs increase it significantly.

Backend and Data Complexity

Apps that need real-time sync, offline support or complex business logic require more backend engineering. Using an existing API or a managed backend-as-a-service can reduce the build scope on this layer.

Compliance and Security Requirements

Healthcare, fintech and education apps must meet standards such as HIPAA, PCI-DSS or COPPA. Each compliance requirement adds audit, data-handling and documentation work that extends both cost and timeline.

Design Complexity and Feedback Rounds

Custom animations, brand-specific UI components and multiple revision rounds extend the design phase. Providing clear brand guidelines and consolidating feedback into structured rounds keeps the design stage on schedule.

FAQ

Questions about cross platform app development services

Does a cross-platform app perform as well as a native app?

Flutter, Google's open-source UI toolkit, compiles Dart code directly to native ARM machine code and draws its own widget layer, so it does not depend on the platform's UI toolkit at all. React Native, Meta's open-source framework, bridges JavaScript to genuine native UI components. For business apps, consumer apps and MVP builds, the performance difference from a fully native app is negligible. The gap becomes measurable only in 3D rendering, real-time video processing or continuous high-frequency sensor reads.

Which is better for my project, Flutter or React Native?

Neither framework is universally better; the right choice depends on specific project conditions.

  • Flutter suits projects that need pixel-perfect custom UI, plan to extend to web or desktop from the same codebase, or have no existing JavaScript dependency.
  • React Native suits teams with existing JavaScript or TypeScript skills and projects that rely on a large JavaScript library ecosystem.

Netofficials reviews both options against your requirements before recommending one. See the dedicated Flutter app development and React Native app development pages for a deeper comparison.

Can a cross-platform app access the device camera, GPS and push notifications?

Yes. Both Flutter and React Native access device hardware through platform plugins that wrap the underlying iOS and Android APIs directly. Camera, GPS, accelerometer, push notifications and biometric authentication are all supported by well-maintained, widely adopted plugins. Netofficials assesses each plugin's maintenance status and community activity during technical planning, so your app does not carry a dependency on an abandoned or under-supported package.

What if a feature I need can only be built with native development?

Both Flutter and React Native support platform-specific modulesnative Swift or Kotlin code compiled directly into the cross-platform project, for features that require deep hardware or OS access. If a requirement makes this hybrid approach impractical or disproportionately complex, Netofficials will say so clearly during scoping and can discuss a dedicated native iOS or native Android build. Identifying these boundaries before development starts prevents costly rework mid-project.

Do you handle submission to both the App Store and Google Play?

Yes. Netofficials manages dual store submission as part of the delivery engagement. This covers preparing release builds, configuring Apple signing certificates and provisioning profiles, generating a signed APK or Android App Bundle for Google, writing store listing metadata, and guiding compliance with the review guidelines of both the Apple App Store and the Google Play Store. You retain full ownership of both developer accounts and every submitted asset.

What factors determine the cost and timeline of a cross-platform app?

Cost and timeline are shaped by several variables that interact with each other:

  • Screen count and user flowseach distinct screen and navigation path adds design and build time
  • User rolesseparate experiences for roles such as admin, field agent and end customer multiply scope independently
  • Third-party integrationspayment gateways, mapping services, CRMs and external APIs each carry their own integration and testing overhead
  • Backend complexitya simple REST API requires less work than a real-time, multi-tenant or event-driven architecture
  • Compliance requirementsHIPAA, GDPR or PCI-DSS obligations introduce additional security controls, audit logging and documentation

Share your feature list with Netofficials for a scoped estimate. Review the engagement models page to understand how pricing is structured.

Who owns the source code and intellectual property after the project?

Intellectual property ownership is defined in the contract signed before work begins. Netofficials structures engagements so that the client receives full ownership of the source code, assets and documentation on final delivery. This includes the Flutter or React Native codebase, design files, API specifications and any custom platform modules written during the project. Review the specific terms with your legal team before signing, as ownership clauses can vary by engagement model.

How does Netofficials manage communication and delivery across time zones?

Netofficials is an India-based software development company and works with clients in the US, UK and Australia, which span significantly different time zones. Delivery is structured around scheduled overlap windows for live calls, asynchronous updates via written progress reports, and shared project tracking tools so clients can review status without waiting for a meeting. Sprint reviews, backlog grooming and milestone sign-offs are scheduled to fall within agreed overlap hours. See the how we work page for process detail.

Not listed here? Ask us directly

Related Services

Work that usually sits alongside this service, and can be scoped together.

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Technology

Flutter App Development

Choose this when your project requires pixel-precise custom UI, consistent rendering across iOS and Android, or a team dedicated to Dart and Flutter widget architecture from day one.

Technology

React Native App Development

Choose this when your engineering team writes JavaScript, your product shares logic with an existing React web application, or you need native UI components rendered by the platform rather than a custom render engine.

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MVP Development

Choose this before a full build when you need a scoped, testable first release on both iOS and Android to validate user demand and gather evidence before committing to a complete product roadmap.

One Codebase, Two App Stores

Send your requirements to Netofficials and a developer will reply with framework recommendations, a list of scoping questions and a structured outline of delivery stages.

Get a Cross-Platform App Quote See Our Engagement Models