I need a complete mobile application built so it runs smoothly on both iOS and Android phones and tablets. The core job covers everything from setting up the codebase to delivering two store-ready builds. You’re free to suggest the stack—Flutter, React Native, Swift + Kotlin, or any other cross-platform toolkit—as long as the final result feels native, is easy to maintain, and can scale. Scope • Design the overall architecture and clean UI flow • Code all screens and navigation, wire up API calls I provide (or help me design simple endpoints if gaps appear) • Implement standard mobile essentials such as secure login, push notifications, and offline handling • Run device testing and resolve bugs across a representative range of iOS and Android versions • Package final builds and guide me through App Store and Google Play submission Deliverables 1. Well-commented source code in a private repo 2. Two signed release builds ready for upload 3. A short hand-off document explaining environment setup, build commands, and any third-party services used I’ll supply design assets, branding, and any required backend credentials as soon as we kick off. Please include a brief note on your proposed tech stack, a timeline you’re comfortable with, and links to one or two live apps you coded for both platforms.