I need a seasoned mobile developer to turn my concept for a productivity app into polished, store-ready builds for both iOS and Android. The goal is a straightforward, reliable tool that helps users organise their day without unnecessary clutter. You’ll guide the project from initial architecture through final submission, covering: • Selecting an appropriate cross-platform stack (React Native, Flutter, or a similar framework that guarantees native-level performance). • Crafting a clean, intuitive UI that feels perfectly at home on both operating systems. • Implementing core productivity features (think task capture, quick editing, reminders, and cloud sync). • Integrating standard analytics and crash-reporting so we can iterate intelligently after launch. • Packaging, testing, and complying with App Store and Google Play requirements until approval. Deliverables 1. Full source code in a private Git repo with clear commit history. 2. Test builds throughout development plus a signed release build for each platform. 3. Brief technical documentation: setup instructions, architecture overview, and a short hand-off video call to walk me through the codebase. Acceptance Criteria • Both versions pass platform-specific review and are live in their respective stores. • No critical or high-priority issues in the crash logs during the first week of release. • UI behaves consistently across common screen sizes (phones and tablets). If you have a track record of shipping responsive, cross-platform productivity tools and can start soon, let’s talk.