Cross-platform frameworks—tools like React Native and Flutter—let you write one codebase for both iOS and Android. They’re designed to cut duplication, speed up work and unify teams.

Flutter emerged a bit later (first teased in 2015, released around 2017) from Google’s labs. It came with its own engine, ...

Beyond the usual quick tips, let's look at both the business case and the technical side of keeping React bundles lean.