Cross-Platform Development

Cross-platform succeeds or fails on a single decision: where the code may be shared and where it deliberately must not be. Logic, data models, and the API layer belong in the shared core. Everything that should feel native, meaning navigation, permission dialogs, keyboard, and haptics, belongs deliberately apart. Blur that line and you get an app that feels equally foreign on both platforms.

The most common mistake is treating shared behaviour as the default and platform-specific behaviour as the exception. The app gets good when you flip that: you design per platform and share what can be shared. iOS users expect different things than Android users, and an app that ignores that difference feels like a compromise on both sides.

When choosing between Flutter and React Native, your team and your requirements matter more than the marketing. If you need a self-contained design language that looks pixel-identical everywhere, Flutter's own engine pays off. If your team lives in TypeScript and you want to stay close to native components, React Native is the obvious fit. Both are viable; the wrong reasoning is the problem.

The real payoff only shows after launch. A cross-platform app is only cheaper if tests, CI, and the release process are shared too. Maintain two pipelines in the end and you have given back half the savings.