When you plan a mobile app, one of the first technical decisions is how to build it. There are three main options, and each has sensible uses. You do not need to be a developer to understand the trade-offs.

Native apps: Kotlin for Android, Swift for iOS

Native apps are built with each platform's own language and tools. They get new platform features first and give the most direct access to the phone's hardware.

  • Best for: apps that rely heavily on device features, advanced graphics or the very best performance.
  • Trade-off: two separate codebases, so building and maintaining for both platforms takes roughly twice the work.

Flutter

Flutter, created by Google, uses the Dart language and draws its own interface, so an app looks the same on Android and iOS. One codebase serves both platforms.

  • Best for: business apps, customer apps and apps with a custom look, where one team should serve both platforms.
  • Trade-off: some platform-specific features still need a little native code, and apps are usually larger in size than native ones.

React Native

React Native, created by Meta, uses JavaScript or TypeScript and renders real native interface components. It is popular with teams that already build websites with React.

  • Best for: businesses whose web and mobile teams can share skills and some code.
  • Trade-off: like Flutter, some features need native modules, and keeping third-party libraries up to date takes care.

How to choose

For most business apps, such as ordering, booking, field service, dealer and staff apps, a cross-platform framework is the sensible default: one codebase, one team and a faster launch on both stores. Choose native when the app depends on something cross-platform tools do not handle well, such as heavy background processing, complex camera or sensor work, or top-end graphics.

A few questions help:

  1. Do you need both Android and iOS at launch?
  2. Which phone features does the app depend on: camera, GPS, Bluetooth, background location?
  3. Do you already have web developers or code you want to share?
  4. Who will maintain the app in three years, and which skills are easy to hire?

What about a web app instead?

Not every business needs a store app. A progressive web app runs in the browser, can be added to the home screen and can work partly offline, without any app store. It suits internal tools and simple customer services where people will not download an app. Push notifications and deep access to phone features are more limited, so the choice again depends on what the app must do.

What matters more than the framework

Users do not care how an app is built. They care whether it is fast, clear and reliable. A well-planned app with a good backend, thoughtful design and proper testing will beat a badly planned one in any framework.

We build with Flutter, React Native and native code, as well as progressive web apps, and recommend the approach in writing, with reasons, during the Lab Sprint. See our mobile app development service, or book a free consultation.