Cross-Platform Info Service App

I need a complete mobile application built that will launch simultaneously on iOS and Android. The core objective is simple: give users an easy way to access information and in-app services through a clean, responsive interface. I am still refining the exact feature set, so I’m counting on you to advise on architecture and best practices while you code. Here is what I expect along the way: • High-fidelity wireframes and a clickable prototype so we can lock the user flow early. • A stable, well-documented codebase—Swift and Kotlin are fine, but I’m open to a single codebase in Flutter or React Native if that shortens timelines without sacrificing quality. • Basic backend setup for authentication, content management, and push notifications. I’m comfortable with Firebase or a lightweight Node/Express stack; recommend what fits best. • Two milestone builds (TestFlight and an Android APK) so I can test on real devices before we move to final polish. • A production-ready release package for both App Store and Google Play, including all required screenshots and listing copy. If you have shipped cross-platform apps that focus on delivering information or services, let’s talk about your approach, timeline, and any questions you have about the scope.