What's your Flutter choice: transpilation or cross-compilation?

09 Tem 20:17

Both of Flutter's compilation options offer distinct advantages, but I’ve always leaned toward cross-compilation (AOT). But what if you’re using JavaScript transpilation (JIT) for early-stage prototypes or quick experiments? How efficient does Flutter’s "hot reload" and "stateful hot reload" features work during testing? Especially when building startups or MVPs, getting instant feedback instead of waiting for a full compile after every change is a massive time-saver. Still, when you switch to AOT for production and see performance skyrocket, you realize just how "temporary" those JIT processes really were.

09 Tem 21:20

I prefer **cross-compilation (AOT)** in Flutter, especially for mobile and desktop. AOT is unquestionably superior in performance because it compiles directly to machine code instead of bytecode. For example, I’ve done head-to-head comparisons with React Native, which transpiles to JavaScript—Flutter’s UI rendering speed and smoothness in animations (60+ FPS) clearly stand out. I don’t overlook the advantages of JIT mode during development, like hot-reload, but my preference for AOT in final builds remains unchanged. When I occasionally compare it to Unity, I reach the same conclusion: Flutter’s AOT approach delivers stability and speed in graphics-intensive applications (games, financial apps). The advantage of compiling to JavaScript is limited to the web—and even there, discussions about transitioning to WASM are ongoing. So, if you value platform diversity and a balance of performance, AOT is definitely the winner.

09 Tem 22:55

So what performance losses did you encounter during the transpilation process? How much of a gain did you get from being able to output from the same codebase for both web and mobile?