Cross-Platform App Development Services: One Codebase for iOS and Android
Building two native apps doubles the cost and the schedule. Our cross-platform app development ships iOS and Android from one codebase in React Native or Flutter, with design, backend, testing and store release. Apps start from $2,000 with a written scope.
What our cross-platform app development services cover
One team builds one app that runs on both platforms, and tells you honestly where a native build is the better choice.
React Native apps
React Native app development for teams that want native performance with a JavaScript and TypeScript codebase shared across iOS and Android.
Flutter apps
Flutter app development for products that need a highly custom interface that looks identical on both platforms.
Kotlin Multiplatform
Shared business logic in Kotlin Multiplatform with native interfaces, for teams that already have Android code to reuse.
Backend, API and QA
Cross-platform mobile app development also needs a server, API and sync behind the app, plus testing on real iPhones and Android phones before every release.
Store release
App Store and Google Play listings, privacy details and review feedback handled by the team, so both apps go live.
Native modules and migration
Custom native modules where a feature needs them, and migration of an existing app to a shared codebase.
Why teams hire us for cross-platform development
A cross-platform app development company should pick the framework for your product, not for its own habits. We compare the options with you first.
Published starting price
Our cross-platform app development services start from $2,000 for iOS and Android, including store release, with a written scope and a fixed price before work begins.
Honest framework advice
Our cross-platform app developers choose React Native, Flutter or Kotlin Multiplatform for your goals and tell you when native iOS or native Android fits better.
Quality on both platforms
Hybrid app development needs real iPhones and Android phones for testing, so the app feels right on each one, not only on the developer's device.
One accountable team
Design, development, backend and release with the same team, and a clear path from MVP to full product.
How a cross-platform app project runs
Discovery
We define the goal, users and core features, choose the framework and agree what goes into the first release.
Design and plan
We design screens that respect both iOS and Android conventions, plan the backend and fix scope and price in writing.
Build and test
Cross-platform app development means one codebase built in short sprints, test on real devices of both platforms and share a working build every sprint.
Release and support
We submit to the App Store and Google Play, handle review feedback and support the app through each new OS version.
React Native, Flutter or native: how to choose
The right choice depends on the interface you need, the team that will own the code and the budget.
| Option | Best for | Watch out for |
|---|---|---|
| React Native | Both platforms from one JavaScript or TypeScript codebase, teams with web skills | Some device features need native modules |
| Flutter | Highly custom interfaces that look identical on both platforms | Larger app size and a smaller talent pool |
| Kotlin Multiplatform | Shared logic with fully native interfaces, teams with Android code | Interfaces are still built twice |
| Native iOS and Android | Deep device features and top performance | Two codebases cost more and take longer |
| Progressive web app | Simple tools without store release | Limited device features on iOS |
For most first versions we recommend one codebase from a cross-platform app development company, and we move a feature to native code when it truly needs it.
For the full picture of platforms and process, see mobile app development services.
What good cross-platform app development looks like in practice
A good cross-platform app starts with one clear job for the user and a short list of features that support it. We write that list with you, choose the framework, then design and build one app that follows the habits of both platforms, such as navigation, gestures and system dialogs. Performance, offline behaviour and battery use are checked early on real devices.
People search for this work as a cross-platform app development company, cross platform mobile app development, React Native development, Flutter development or hybrid app development, and the scope is the same: plan, design, build, test and release. Technically we work with React Native and TypeScript, Flutter and Dart, Kotlin Multiplatform, REST and GraphQL APIs, push notifications, payments and secure sign-in. Apps often need a backend and an admin panel, so we build those too.
Costs depend on the number of screens, the backend and the integrations. The cross-platform app development cost is agreed in writing after a short call, and teams that hire React Native or Flutter developers from us get a scope, a schedule and a fixed price. Apps start from $2,000, which is the real minimum for a simple app on both platforms. After launch we offer app maintenance, so framework updates, new OS versions, bug fixes and new features stay with the team that built the app.
Questions we get on the first call
What is cross-platform app development?
It means building one app from a shared codebase that runs on both iOS and Android, usually in React Native or Flutter, instead of building two separate native apps.
How much does cross-platform app development cost?
Cross-platform apps start from $2,000 for iOS and Android, including store release. The final price depends on screens, backend and integrations, and it is fixed in writing before work starts.
Is cross-platform cheaper than native?
Usually yes for a first version, because one team builds one codebase for both platforms. Native can still win when a product needs deep device features or top performance.
React Native or Flutter: which should I choose?
React Native suits teams with web skills and a mostly standard interface, while Flutter suits highly custom interfaces. We compare both against your product before we commit.
How long does it take to build a cross-platform app?
A simple app often takes six to ten weeks, and a larger app with a backend takes three to six months. We give a schedule with the quote.
Will the app feel native on both platforms?
Yes, when it is designed for both. We follow the navigation and design habits of iOS and Android and use native modules where a feature needs them.
Do you publish to the App Store and Google Play?
Yes. We prepare the listings, screenshots and builds, submit them and answer review feedback until both apps go live.
Can you migrate an existing app to a shared codebase?
Yes. We assess the current apps, plan the migration in stages and move features over without stopping the product.
How do I start?
Tell us the idea, the users and the platforms you need, or ask for the free review. You get a scope and a fixed price, usually within a few days.
Tell us about your app. We will scope the cross-platform build.
The first call is free. Get cross-platform app development services with a published starting price, a written scope and one accountable team.