iOS & Android App Development -- 2

I need a complete mobile application built and ready for publication on both the iOS App Store and the Google Play Store. The core idea is defined, but the exact feature set will be refined together once we start, so I’m looking for someone comfortable guiding a project from early concept through launch. The job covers: • UX/UI design that feels native on both platforms • Front-end coding (Swift/Objective-C for iOS, Kotlin/Java for Android, or a cross-platform toolkit such as Flutter or React Native—open to your recommendation) • Secure data handling and any necessary API integration • Thorough QA on real devices • Store-ready builds and assistance with the submission process Please include links to two or three live apps you’ve shipped, your preferred tech stack, and an estimated timeline for delivering a first test build and a release candidate.