I need a complete online Matka game app modelled on the reference I’ve shared: https://play.google.com/store/apps/details?id=com.oppKHATRI777.KHATRI777. The build has to cover the standard number-betting flow that regular Matka players expect, supported by a secure betting engine, a straightforward user registration / login module, and in-app deposit–withdrawal via a reliable payment gateway. Because I want players to track performance in real time, the finished product must also present clear charts for overall game statistics, interactive graphs of each user’s activity, and a live leaderboard that refreshes automatically after every result. I’m flexible on stack—Flutter, React-Native, or native Android are all fine as long as the final APK is stable and the backend (Node, Laravel, PHP, or similar) scales smoothly. At hand-over I’ll need the full source code, database schema, and a short deployment guide so I can run the service on my own server. Acceptance will be based on: • Lag-free gameplay and precise result calculation • Seamless, error-free payment flow • Visualisation widgets opening in under two seconds on a standard 4G connection • Clean, intuitive UI that stays close to the reference while improving overall usability Please outline your proposed tech stack, key milestones, and timeline when bidding.