Flutter apps are generally designed to be fast and performant, but it's true that there can be performance differences between Flutter apps and fully native apps built using platform-specific frameworks like UIKit for iOS or Java/Kotlin for Android. Here are a few factors that can impact the performance of Flutter apps compared to native apps: Startup Time: Flutter apps may have a slightly longer startup time compared to native apps due to the Flutter engine initialization and Dart runtime initialization. UI Rendering: Flutter uses its rendering engine to draw UI components, which may introduce some overhead compared to the native rendering of platform-specific UI components. Platform-specific Features: Implementing platform-specific features or accessing native APIs in Flutter may require additional layers of abstraction or plugins, which can impact performance. Optimization: Fully native apps can be highly optimized for their respective platforms since they utilize platform-specific APIs and optimizations provided by the platform vendors. However, it's important to note that Flutter has made significant improvements in performance over time, and many Flutter apps can achieve near-native performance for most use cases. Google and the Flutter community are continuously working on optimizing Flutter's performance, reducing its overhead, and improving its compatibility with platform-specific features. Moreover, Flutter offers a rich set of widgets, tools, and plugins that can help developers build high-quality, responsive, and visually appealing apps across multiple platforms with a single codebase. This can significantly speed up development time and reduce maintenance efforts, making Flutter a popular choice for cross-platform app development despite potential performance differences. Ultimately, the choice between Flutter and native development depends on the specific requirements of your project, your development team's expertise, and the performance trade-offs you're willing to accept. For many applications, Flutter's benefits in terms of productivity, code reuse, and cross-platform capabilities outweigh any minor performance differences.