Avoid These 11 Common Mistakes When Building React Native Apps

1. Wrong assumptions

The initial expectations for a React Native (RN) app were completely wrong, especially regarding separate iOS and Android layouts, data validation layers, and understanding backend data points for proper Redux store planning.

2. Reuse existing components

Leverage ready-made component libraries (buttons, footers, headers, inputs, text) when you don’t need custom designs; otherwise, build your own components to gain deeper understanding and avoid external module dependencies.

3. Don’t separate iOS and Android layouts unnecessarily

If layouts are identical, use RN’s Platform API; if they differ, split files using the .ios.js and .android.js conventions and share helper functions where possible.

4. Poor Redux store planning

Avoid focusing only on the UI layer; design the store to manage data correctly. Separate concerns, group reducers by domain (e.g., Auth, Todos, Friends), and avoid creating a reducer for every detail view.

5. Bad project structure

Assess the size of your project first. For small apps (≤10 pages) a simple structure may suffice; larger apps benefit from separating actions and reducers per container and organizing shared styles in a dedicated folder.

6. Incorrect container structure – not using smart/dumb components

Separate presentation (dumb) components from logic (smart) containers, move styles to independent modules, and avoid over‑customizing small components that become hard to maintain.

7. Inline styles

Move all styles to separate style modules to stay away from inline styling, which is hard to maintain.

8. Using Redux for form validation

Instead of creating actions, types, and reducers for validation, handle simple validation directly in component state with pure functions, reducing unnecessary store complexity.

9. Over‑reliance on zIndex

While RN now supports zIndex, use it sparingly; excessive reliance can lead to confusing layer ordering, especially on Android.

10. Not reading external module code

Even when using third‑party modules, read their source code to understand failures, avoid hidden bugs, and learn how to build your own modules.

11. Be careful with gestures and animation APIs

Use PanResponder and the animation API correctly for native‑like gestures and animations; initialize responders, handle onPanResponderGrant and onPanResponderRelease, and animate properties such as opacity with Animated.View.

React Native enables you to create almost any native experience, but avoiding these common mistakes will make your development smoother and your apps more reliable.