I have the concept and branding for a new delivery service and now need a complete app built in Flutter that runs smoothly on iOS, Android, and the Web from a single codebase. Core features I’m counting on you to implement include real-time order tracking on a map, secure payment integration (cards and popular wallets), and reliable push notifications for every status update. At this stage I do not require any form of user authentication, so you’re free to focus entirely on the purchase-to-doorstep flow without login screens or social sign-ins. My priority is clean, well-structured Dart code, tested on the latest stable Flutter channel, and easily maintainable going forward. If you’re familiar with Firebase, Stripe, or similar back-end services, please mention it, as I expect whichever stack you choose to deliver fast location updates and instant payment confirmations. Deliverables: • Complete Flutter project ready to run on iOS, Android, and Web • Real-time tracking module wired to a live location data source • Payment gateway integration fully tested in sandbox and live modes • Push notification setup (Firebase Cloud Messaging or equivalent) with sample payloads • Brief setup/README so another developer can build and deploy in minutes Once the above is in place and approved, we can discuss phase-two features, but for now I simply need a dependable MVP that customers can place orders with right away.