Flutter vs React Native Performance

Flutter vs React Native 2024: Understand the Basics

Before diving deeper into the performance comparison, it is important to understand the basics of Flutter and React Native. Both frameworks are popular choices for cross-platform app development, offering unique features and benefits.

Flutter: A Cross-Platform Framework for Natively Compiled Apps

Flutter is a portable UI toolkit developed by Google. It allows developers to build visually attractive and natively compiled apps for multiple platforms using a single codebase. Flutter uses the Dart programming language, which offers high performance and a rich set of features.

React Native: A Framework for Web Developers

React Native, on the other hand, is an open-source framework created by Facebook. It allows web developers to leverage their existing JavaScript skills to build robust mobile applications. React Native combines the power of React with native components to deliver near-native performance.

Flutter vs React Native - Flutter logo - Bluebird Blog
Flutter vs React Native - React logo - Bluebird Blog

The Technical Rundown: Flutter's Architecture

Flutter, Google's cross-platform development framework, is built on a well-structured architecture that enables its exceptional performance and development capabilities. Understanding Flutter's architecture is essential for developers seeking to harness its full potential.

At its core, Flutter's architecture follows a layered approach, with each component playing a crucial role in the framework's functionality:

1. Framework

The framework is the foundation of Flutter and is written in the Dart programming language. It provides developers with an extensive set of APIs, tools, and libraries for building rich and responsive user interfaces. Dart's strong typing and just-in-time compilation contribute to Flutter's impressive performance and developer productivity.

2. Engine

The engine is the heart of Flutter, responsible for rendering and controlling the user interface. Written in C++, it leverages the Skia graphics library and embeds a fast and efficient rendering engine. This allows Flutter to deliver consistent and visually attractive apps across multiple platforms, ensuring a native-like experience for end users.

3. Embedder

The embedder acts as a bridge between the framework and the platform-specific features of the operating system. It enables Flutter to interact with the platform's native APIs, accessing device capabilities and ensuring seamless integration with the underlying system. The embedder plays a vital role in creating cross-platform apps that can fully leverage the unique functionalities of each operating system.

Flutter's architecture, combined with its design principles of declarative UI coding and the power of Dart, empowers developers to create stunning and high-performing applications. The layered approach, encompassing the framework, engine, and embedder, optimizes the development process and enables the seamless deployment of apps across different platforms.




The foundation of Flutter, written in Dart programming language, providing APIs, tools, and libraries for building user interfaces


The engine responsible for rendering and controlling the user interface, written in C++ and leveraging the Skia graphics library


The bridge between the framework and the platform, allowing Flutter to interact with native APIs and access device capabilities

React Native's Architecture and Performance

React Native is a widely acclaimed framework for building high-performance mobile apps. Its architecture combines the power of JavaScript and native components, allowing developers to create robust and visually appealing applications.

One of the key features of React Native is its utilization of JavaScript. This popular programming language enables developers to leverage their existing web development skills, making the transition to mobile app development seamless and efficient.

To ensure near-native performance, React Native utilizes native components. These components enable the framework to build user interfaces that are indistinguishable from those created using traditional native development approaches. By bridging the gap between web and native technologies, React Native provides developers with the best of both worlds.

React Native also offers remarkable flexibility in UI development. The framework is based on the highly acclaimed React library, renowned for its declarative approach to building user interfaces. React Native allows developers to create intricate and visually stunning UIs, providing users with a seamless and engaging experience.

The architecture and performance of React Native make it an ideal choice for developers seeking to create native-like apps using their web development skills. With its ability to combine the power of JavaScript and native components, React Native ensures high performance, efficient development, and visually appealing user interfaces.

A Comparison of React Native Architecture and Performance


React Native

Programming Language


Native Components


UI Development

Flexible and visually appealing



Flutter vs KMM vs React Native

The battle of Flutter vs KMM vs React Native showcases the strengths and weaknesses of each technology. Developers, when choosing the right framework, must consider factors such as programming languages, performance, developer experience, and community and ecosystem support.

Flutter, powered by the Dart programming language, offers high performance and a rich developer experience. Its advanced features and tooling make it a favored choice for developers seeking efficient cross-platform app development.

KMM, based on Kotlin, provides convenience for Kotlin users. It allows sharing business logic between iOS and Android, leading to faster development cycles. However, KMM may require platform-specific customizations for certain functionalities.

React Native, with its JavaScript and React foundations, offers an easy transition for web developers. It leverages existing web development skills to create mobile apps, making it a popular choice. The expansive React Native community ensures ongoing support and a wide variety of resources.

The choice of technology ultimately depends on the project's requirements and the developer's existing skills. Evaluating the programming languages, performance, developer experience, and community and ecosystem support can help identify the most suitable framework for a specific use case.

Flutter vs KMM vs React Native Comparison:


Programming Language


Developer Experience

Community and Ecosystem Support



High performance

Rich developer experience

Vibrant community and continuous updates



Requires platform-specific customizations

Convenience for Kotlin users

Developing community and growing ecosystem

React Native


Near-native performance

Easy transition for web developers

Expansive community and thriving ecosystem


Which framework is better for mobile app development, Flutter or React Native?

The choice of framework depends on specific project requirements, developer skills, and preferences. Flutter offers high performance, design flexibility, and a rich developer experience. React Native provides near-native performance, lightning-fast development, and a large community. It is important to carefully consider these factors before making a decision.

What are the advantages of cross-platform app development?

Cross-platform app development allows apps to cater to both iOS and Android users, maximizing market reach. It reduces development costs by utilizing a single codebase and improves time efficiency. It also ensures consistency in user experience across platforms, future-proofing the apps and allowing for rapid development and deployment.

What are the key features of Flutter?

Flutter offers high performance, design flexibility, and a rich developer experience. It has features like hot reload for faster development. Flutter provides a native-like experience and ensures visually attractive apps across platforms. It also has a vibrant community and continuous updates to stay at the forefront of technological advancements.

What are the key features of React Native?

React Native offers near-native performance and supports the creation of pixel-perfect user interfaces. It allows for lightning-fast development with features like hot reloading. React Native is budget-friendly and has a large and active community, making it easy to find support and solutions.

How do developers choose between Flutter and React Native?

Developers should consider specific project requirements, their existing skills, and preferences when choosing between Flutter and React Native. It is important to analyze the performance, architecture, developer experience, and community support of both frameworks before making an informed decision.

What is the architecture of Flutter?

Flutter's architecture is based on a layered approach. It includes components like the framework (written in Dart), engine (written in C++), and embedder. The Dart language plays a crucial role in Flutter's performance and development experience. It focuses on declarative UI coding and its rendering engine, ensuring consistent and visually attractive apps across platforms.

What is the architecture of React Native?

React Native's architecture involves using JavaScript and native components to create high-performance mobile apps. It leverages the power of React and supports the creation of native interfaces. React Native ensures near-native performance while providing flexibility in UI development, making it a preferred choice for developers with web development skills.

If you need more information about the Flutter vs React native debate, read our blog post about it.

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