I’m launching a new productivity-focused mobile application and need an expert who can take it from concept to a polished build that runs seamlessly on both iOS and Android. At this stage the core idea is defined, but I’m happy to refine the feature set with you to make sure the UX feels natural on each platform. Here’s what I have in mind: • A clean, intuitive interface that helps users organise their day and stay on task. • Real-time sync between devices so data never feels out of date. • A lightweight architecture that keeps performance snappy on older phones as well as the latest models. I’m open to native Swift/Kotlin builds, React Native, Flutter, or a similar cross-platform framework—whichever you feel delivers the best balance of speed and maintainability. Key deliverables 1. Clickable prototype or wireframes for sign-off 2. Full source code with clear documentation 3. Tested builds uploaded to TestFlight / Google Play Internal Testing 4. Guidance for final App Store and Play Store submission Clean, modular code, version control (Git), and clear communication at each milestone are essential. Let me know which stack you’d recommend, a rough timeline, and any similar productivity apps you’ve shipped before so I can see your style in action.