In the inaugural episode of Mobile Development with Fexingo, Lucas and Luna dive into the biggest debate in app building today: which cross-platform framework actually delivers? They start with a surprising stat — 89% of developers now use some form of cross-platform tooling — then walk through a real-world case: how a mid-size fintech startup rebuilt its app in React Native after three years on native Swift and Kotlin. Lucas breaks down the trade-offs: development speed vs. performance, shared business logic vs. platform-consistent UI. Luna pushes back with data on user retention and crash rates. The conversation settles on a practical framework for teams deciding between React Native, SwiftUI, Kotlin Multiplatform, and Flutter — with specific numbers on build time, team cost, and app store rejection rates. No hype, just honest engineering trade-offs.