Free Fire Tournament Android App

I’m building a small-scale platform that lets players join paid Garena Free Fire tournaments directly from an Android app, pay their entry fees through UPI, and receive any winnings instantly. Player-side flow • Sign up via social media login, no email or OTP steps... (Budget: ₹1500 - ₹12500 INR, Jobs: Android, Angular, iPhone, Java, Kotlin, Mobile App Development, Payment Gateway Integration, PHP)