React Native App Development Agency for iOS and Android Apps
One codebase, two app stores, and a senior team that designs, builds, ships and maintains the whole thing.
A good fit if
- You need iOS and Android at launch but cannot fund two native teams
- Your web product is built in React and you want the app to share it
- You have an existing React Native app that crashes, lags or will not update
- You want an agency that tells you plainly when React Native is the wrong pick
React Native lets one team write an app once and ship it to both stores with real native controls. For most business apps that halves the work without users noticing a difference.
Services
What our React Native app development agency builds
For startups and businesses in the US, UK, Canada, Australia and India, working remotely with overlap planned around your day.
New iOS and Android apps
Consumer and business apps built from scratch in React Native with TypeScript, from the first wireframe to approval on the App Store and Google Play.
MVPs for startups
A first version of your product on both stores, scoped tight so you can test demand before committing to a bigger build.
Apps that share code with your web product
If your site or dashboard runs on React or Next.js, the app can share business logic, types and API clients with it, so a change lands on both.
Rescue and takeover
We audit an existing React Native codebase, upgrade the framework and libraries, fix crashes and performance problems, and document what we found.
Native modules when you need them
Bluetooth devices, payment terminals, background tasks or a platform SDK with no React Native wrapper. We write the Swift or Kotlin bridge ourselves.
Release, updates and maintenance
Store submissions, over-the-air updates for JavaScript fixes, crash monitoring and yearly OS upgrades on a monthly retainer.
The framework
Is React Native good for mobile app development?
For most business and consumer apps, yes. Here is why, and where it falls short.
Real native interface
React Native renders the platform's own buttons, lists and text inputs, so the app behaves the way iPhone and Android users expect.
One team, both platforms
Most of the code is shared between iOS and Android. Features ship to both stores together instead of one platform lagging behind.
Fast fixes after launch
With Expo and over-the-air updates, many bug fixes reach users within hours instead of waiting on a full store review.
Built on React
React is one of the most widely used ways to build web interfaces, so hiring for your app later, or moving web developers onto it, is far easier.
Where it is the wrong tool
Graphics-heavy games, advanced AR and apps that live almost entirely inside one platform's newest APIs are usually better built fully native. We will say so.
Comparison
Flutter vs React Native: how we pick for your app
We build in both, so the choice comes from your project, not from habit.
Choose React Native when
You already have a React or Next.js web product, you want the platform's native look on each phone, or your team writes JavaScript and TypeScript.
Choose Flutter when
The design is heavily custom and must look pixel-identical on every device, or the app will also run on desktop and embedded screens.
Performance
With the new architecture and the Hermes engine, React Native handles the lists, forms, maps and media of a typical business app smoothly. The real speed problems we fix are almost always in app code, not the framework.
Long-term cost
The cheaper framework over five years is the one your future hires already know. For most companies with a web product, that is React Native.
How it runs
How our React Native app development company works
- 01
Scope and platform check
Features, integrations and any device APIs listed up front, with a straight answer on whether React Native fits.
- 02
Design for both stores
One design system in Figma that respects iOS and Android conventions where they differ.
- 03
Build with weekly test builds
TestFlight and Play internal testing builds every week, so you hold the app on your own phone throughout.
- 04
Store launch and handover
Listings, screenshots, review responses and release pipelines, all under your developer accounts.
Cost
How much does React Native app development cost?
Less than two separate native apps, because most of the code is written once. The exact figure depends on these factors, and we put it in a fixed quote after a short call.
Get a fixed quote→| What moves the price | Why |
|---|---|
| Screens and user roles | A customer app with ten screens is a different job from a two-sided marketplace with customers, providers and an admin panel. |
| Backend and admin | If you need an API, database and admin dashboard built too, that is often as much work as the app itself. |
| Device features | Camera, location, push notifications and biometrics are well supported. Bluetooth hardware, background processing or custom native modules add native work. |
| Integrations | Payments, maps, chat, a CRM or your own systems each add build time, testing and a third party to manage. |
| Offline support | An app that works without signal needs local storage and sync rules, which add real engineering to every feature that touches data. |
| New build or takeover | Taking over an existing app starts with an audit. An outdated framework version or missing tests can make the first month mostly repair work. |
Tools we use for this
- React Native
- Expo
- TypeScript
- React
- Next.js
- Node.js
- Swift
- Kotlin
- Firebase
- PostgreSQL
- Stripe
- Figma
FAQ
React Native app development questions
It designs, builds and publishes mobile apps for iOS and Android from a single React Native codebase. A full-service company covers product scoping, interface design, the app itself, the backend and admin it talks to, App Store and Google Play submission, and maintenance once the app is live. At Kavion the same senior team does every stage, so the people who planned your app are the ones who write and ship it.
Because it gets one app onto both major platforms with one team and one codebase, while keeping the native look and feel users expect. Features launch on iPhone and Android together, fixes can often go out as over-the-air updates, and the skills behind it are shared with React on the web. For companies that already run a React or Next.js product, the app can reuse a good share of that work instead of starting again.
It depends on the number of screens and user roles, whether the backend and admin panel are part of the job, which device features and integrations you need, and whether the app has to work offline. A focused customer app is a much smaller project than a marketplace. We give a fixed quote after a scoping call, and the start a project form lets you choose a budget range so the conversation starts in the right place.
Yes, for most business and consumer apps. It renders real native interface elements, shares most of its code across iOS and Android, and its newer architecture handles the scrolling lists, forms, maps and media that typical apps need without trouble. It is a weaker fit for graphics-heavy games, advanced augmented reality or apps built mainly around the newest platform-only features. We tell you which camp your idea falls into before any work begins.
Neither wins everywhere. React Native suits teams with a React or Next.js web product, apps that should feel native on each platform, and companies that want to hire from the large JavaScript talent pool. Flutter suits heavily branded interfaces that must look identical on every device and apps that also target desktop. Both are mature and backed by large companies. We build in both and recommend one after looking at your product, team and roadmap.
Yes. We are a small senior team based in India, working remotely with startups and businesses in the US, UK, Canada, Australia and India. We plan overlap with your working day for calls and reviews, share test builds every week so you always see real progress, and reply within one business day. You get a direct line to the people building your app, with no account manager in between.
For the vast majority of business apps, users cannot tell the difference. The Hermes engine and the new architecture removed most of the old bottlenecks, and heavy work can move into native modules when needed. Slow React Native apps are usually slow because of how they were written: unnecessary re-renders, oversized images or long lists built the wrong way. Those are the problems we find and fix first when we take over an app.
Yes. We start with a short audit: we read the code, check the framework and library versions, build the app on real devices and review crash reports. You get a written list of what is wrong and what to do about it, in order of risk. From there we can upgrade and stabilise the app, then continue with new features on a retainer, or hand the plan to your own team.
A focused first version usually takes around two to four months from scope to store approval, depending on the number of screens, the backend work and the integrations involved. Larger apps are split into releases so something useful reaches users early. Store review adds a few days at launch. We set the milestones and launch date in the quote, and send a test build every week so you can track progress yourself.
You do. The app is published under your own Apple Developer and Google Play accounts, the code lives in a repository you own, and any cloud services are set up in your name. We work as invited members of those accounts. If you ever move the app to another team or bring development in-house, nothing needs transferring and nobody can hold the app back from you.