I want to launch an Android-only spin betting game in which every round is driven by a configurable “greed” algorithm that steadily secures a margin for the house while still feeling fair and exciting to players. Core flow • Users register or sign in with their phone number; an OTP-based process is enough. • They top up their wallet through upi in-app purchases and use those credits to place bets on a spinning wheel. • Behind the scenes the greed settings I define from an admin panel subtly adjust win probabilities and payout tiers so my expected profit remains positive even during lucky streaks. What I need built 1. A polished Android app (Kotlin or Flutter are both fine) featuring a visually engaging spin wheel, real-time odds adjustment based on the greed logic, user wallet, win/loss animation, sound effects, and a basic leaderboard. 2. Secure integration of upi for deposits, with hooks for future withdrawal options. 3. OTP phone-number authentication via Firebase or an equivalent SMS service. 4. A lightweight web-based admin console where I can: • dial up or down the greed coefficient in real time, • review player balances, game logs, and revenue analytics, • trigger promotional bonuses or free spins. 5. Delivery of complete source code, build instructions, and a short hand-off call so I can publish the app to the Play Store myself. Acceptance criteria • Wheel odds and payouts update instantly when I change greed settings in the console. • Transactions processed through Google Play Billing reflect in the in-app wallet without manual refresh. • Phone number login works worldwide with fallback resend. • All game logic runs server-side or securely obfuscated to prevent tampering. If you’ve shipped real-money games, roulette, or wheel-of-fortune style apps before, that experience will help us move fast. Let me know what tech stack you prefer and the rough timeline you’d need to hit the deliverables above.