I want to build a single code-base mobile application that runs smoothly on both iOS and Android, giving car owners the power to locate the nearest wash station, check real-time availability, reserve a slot, and pay on the spot. On the other side, station owners will gain a full-featured B2B dashboard that lets them manage services, pricing, and customer flow while tracking rich analytics that drive revenue. Core experience • Real-time booking flow tied to each station’s live queue • Secure online payment (card, wallet, Apple Pay, Google Pay) with automated receipts • Ratings and reviews so drivers can choose stations confidently Revenue & growth levers • Upsell engine that surfaces add-on services during checkout (e.g., detailing, waxing) • In-app ad placements for automotive brands and local partners • Unified admin panel where operators adjust pricing, push promos, and view performance metrics in one glance Acceptance criteria 1. Native apps published to App Store and Google Play under my developer accounts. 2. Responsive station dashboard accessible via web and tablet. 3. End-to-end test case demonstrating a first-time user booking, paying, and reviewing a wash. 4. Real-time update latency under three seconds from station POS to customer app. 5. Clean, well-documented codebase (preferably Flutter or React Native + Node/Express or Django), handed off via Git. APIs, UX wireframes, and brand assets are ready to share once we kick off.