I’m building a cross-platform mobile app (iOS and Android) that lets gamers buy digital coins, full accounts, and vouchers for titles such as eFootball Mobile, MLBB, PUBG Mobile, EA FC Mobile, and PSN cards. Users will browse available top-ups, pick the package they want, then fill out an in-app form with any game-account credentials required for the transaction. Core flow • New customers create a profile or sign in. • They select the game, choose a coin or account package, and submit the form. • Orders appear in their personal history while I receive a push notification in the admin panel. • After I manually verify payment and complete the top-up, I mark the order as approved; the status update is pushed to the customer in real time. Minimum feature set • Secure user account creation & management (email, phone, or social login). • Clean catalogue interface for multiple games and digital products. • Dynamic form builder per game so I can decide which fields (UID, server, login, etc.) are required. • Order history with live status (Pending, In Progress, Completed, Cancelled). • Admin dashboard (mobile-friendly web or in-app) to review details and approve or reject transactions. • Basic notifications (app and email). I’m open to Flutter, React Native, or Kotlin/Swift twin builds—as long as one codebase covers both stores efficiently and passes App Store / Play Store compliance. Please factor in solid database design, basic security (hashed credentials, SSL), and clear documentation so I can update game lists and package prices myself later on. Send me a brief outline of your proposed stack, milestones, and any similar e-commerce or gaming work you’ve shipped.