There are multiple factors to consider when choosing between Flutter and React Native for app development. Here is a summary of the key points:

1. Programming Language: Flutter uses Dart, while React Native uses JavaScript. Dart is specifically designed for UI development, while JavaScript is more versatile and widely used. The choice depends on your project's requirements and the expertise of your development team.

2. Performance: Flutter has faster rendering times but can result in larger app sizes compared to React Native. React Native has faster start-up times due to Just-In-Time (JIT) compilation. Both frameworks provide good performance for animations and graphics, but Flutter allows for more customizations.

3. User Interface: React Native uses native UI components for a more native-like experience, but this can lead to performance issues with complex UIs. Flutter has its rendering engine, allowing for smooth and customizable UI across platforms. The choice depends on the project's requirements and the preferences of the development team.

4. Hot Reload: Flutter's hot reload feature allows for real-time changes while the app is running, making it faster and more seamless. React Native's hot reload requires a full app reload but is more stable and reliable.

5. Backend Functionality: React Native has better compatibility with JavaScript-based backend frameworks like Node.js and can easily integrate with backend systems like MongoDB, MySQL, and PostgreSQL.

Given these factors, the choice between Flutter and React Native depends on the specific requirements of your project and the preferences of your development team.

Sources:

• Blup Blog - Flutter vs React Native

• Technource Blog - React Native or Flutter