I need an end-to-end build of a productivity-focused mobile application that runs smoothly on both iOS and Android. Think of the polish and intuitive flow you see in AirBnB—clean onboarding, easy navigation, and a layout that makes complex actions feel simple—applied to personal productivity rather than accommodation booking. Core concept The app will let users create and manage tasks in a visually engaging way, with calendar-style scheduling and quick, in-app interactions. It must feel fast and friendly, so a native-like framework such as Flutter or React Native paired with a real-time back end (Firebase, Supabase, or similar) is ideal, but I’m open to your preferred toolset if you can hit the same performance and UX benchmarks. Key needs • Task creation and management with an AirBnB-level interface polish • Calendar integration for drag-and-drop scheduling and reminders • Real-time data sync so changes appear instantly across devices • Secure account system (email, Apple, Google sign-in) • Clean, modern UI that matches current iOS and Material Design guidelines • Fully commented source code and a testable build for each platform Scope & milestones 1. Wireframes & clickable prototype for feedback 2. Front-end build with iterative user-testing checkpoints 3. Back-end integration and basic analytics 4. Final QA, App Store / Play submission support, and post-launch bug-fix window I’ll supply style references and can respond quickly to design iterations. If you have shipped cross-platform apps with comparable polish, let’s talk timelines and your suggested tech stack so we can get this in users’ hands soon.