The future of app development is flutter, and the application level of Flutter describes the practical implementation that can build the framework and how it performs across various domains. Flutter is versatile and can develop a wide range of applications from simple to complex. The different application levels of flutter are Mobile Application (Android and iOS) Flutter’s main application is cross-platform mobile app development. The one codebase that works on both Android and IOS devices. Common mobile applications are E-commerce apps, Social networking apps, News and information apps, Productivity apps, On-demand services, and Healthcare apps. Web Applications Developers create web applications that run on any modern web browser without any changes in the existing Flutter codebase. The same app can run on both mobile and the web and provide a smooth experience. The common web applications are Web dashboards, E-commerce sites, Interactive media websites, and Progressive Web Apps. Desktop Applications (Windows, macOS, Linux) It allows to building of fully functional desktop applications from the same codebase that is used for both mobile and web. The common desktop applications are Enterprise-level software, Desktop utilities, Point-of-sale systems, and Customer relationship management systems. Enterprise Applications Flutter’s cross-platform nature makes it suitable for enterprise applications that need to operate on multiple platforms. It is mainly used in Banking and finance apps, Inventory and supply chain management systems, Employee management tools, and Enterprise Resource Planning systems. Embedded Applications Flutter course will build applications that run on various hardware devices. It is in the evolving stage which works on Smart TVs, Wearable devices, or IoT systems. Flutter application can be used in other fields like Game Development, Start-ups and MVP Development, and IoT and Wearables. It shows the future of app development is flutter. The flutter application will improve its efficiency and speed.  The Flutter app can range from small to large-scale enterprise systems. And it ensures consistency in designs and performances across the mobile, web, and desktop.