wtf is flutter-stats-fl?

statsfl is a simple performance monitor for Flutter apps. It displays a small, real-time graph showing your app's frames per second (FPS), so you can immediately see whether your app is running smoothly or stuttering. The on-screen display looks similar to the performance graphs found in web browsers or game development tools. Using it requires just one line of code: you wrap your existing app in the tool's widget. Once added, a small stats box appears on top of your app's interface. The box continuously updates to show your current FPS, helping you spot performance drops as they happen. You can adjust its size, position on the screen, and how frequently it calculates the FPS. You can also set a custom target FPS if your app aims for a higher refresh rate than the standard 60. Flutter developers building mobile, desktop, or web apps would find this useful when they need to track down performance issues. For example, if an app's scrolling feels janky or an animation drops frames, turning on this monitor helps pinpoint exactly when and where the problem occurs. It serves as a quick diagnostic tool to ensure the user experience remains fluid before shipping to customers. One notable aspect of the tool is its simplicity. It acts as a lightweight overlay that sits on top of your app rather than running as a separate diagnostic process. The README does not go into detail about performance overhead, but the tool's minimal design suggests it is meant to stay out of the way until you specifically need to check your frame rate.