If your product needs a mobile app, one of the first technical decisions is whether to build it cross-platform — one codebase for iOS and Android, usually with React Native — or natively, with Swift for iOS and Kotlin for Android.
For most MVPs we recommend React Native. But not always. Here is how to decide.
What each approach means
Native means two separate apps: one written in Swift (iOS) and one in Kotlin (Android), each using the platform's own UI toolkit. You get full access to every platform feature on day one, at the cost of building and maintaining everything twice.
React Native lets you write most of the app once in TypeScript and ship it to both stores. It renders real native UI components, and you can still drop into Swift or Kotlin for the parts that need it.
Side by side
| React Native | Native (Swift + Kotlin) | |
|---|---|---|
| Codebases | One shared (mostly) | Two separate |
| Time to MVP | Faster — one team, one codebase | Slower — features built twice |
| Cost | Lower | Higher |
| Performance | Excellent for most apps | Best possible |
| Platform features | Most available; native modules for the rest | Everything, immediately |
| Shared code with web | Yes — TypeScript, logic, often design system | No |
| Hiring | Large JavaScript/TypeScript talent pool | Two specialist skill sets |
When React Native is the right call
- You need iOS and Android at launch and don't want to double the budget.
- Your app is mostly screens, forms, lists, maps, chat and payments — which describes the majority of business and consumer apps.
- You also have a web app. Sharing TypeScript types, business logic and API clients across mobile and web saves real time.
- Speed of iteration matters. One codebase means one fix, one release, one set of tests.
This is the approach we used for Clean Fanatics: a React Native customer app alongside a React web app and a Next.js admin, sharing one TypeScript ecosystem.
When to go native
- Heavy, real-time graphics or media processing — games, advanced camera or AR experiences, video editing.
- Deep, day-one use of brand-new platform APIs before cross-platform libraries catch up.
- Tight integration with specialised hardware such as some medical or industrial devices.
- An app that is essentially a thin wrapper around one platform's ecosystem — for example, an Apple Watch-first product.
Even then, many teams start cross-platform to validate the idea and move specific screens to native later.
Common myths
"React Native apps feel like websites." They don't — React Native renders native components, not a web view. Poor performance usually comes from how an app is built, not the framework.
"You'll have to rewrite it later." Plenty of products run on React Native for years. If a part of the app outgrows it, you can write that part natively without rewriting the rest.
"Native is always more secure." Security comes from how you handle data, authentication and storage — the same principles apply either way.
What about Flutter or a web app?
Flutter is another strong cross-platform option. We usually favour React Native because it shares a language (TypeScript) with the web, which matters when you're also building a web app and an admin panel.
A mobile-friendly web app or progressive web app can be the fastest way to validate an idea if you don't need push notifications, offline mode, or an App Store presence yet.
Our recommendation
For a first release that needs both iOS and Android, start with React Native, keep the architecture clean, and plan to go native only where you measure a real need. You'll launch sooner and spend your budget on features users can see.
Not sure which fits your product? Tell us about it and we'll give you a straight answer — or see our software engineering services.