Build Custom Android Mobile App

The goal is to turn my concept into a polished, native Android application. I already have the feature ideas sketched out; now I need them translated into an intuitive interface, robust Kotlin/Java code, and a Play Store–ready release... (Budget: ₹12500 - ₹37500 INR, Jobs: Android, Android App Development, API Integration, Git, HTML5, Java, Kotlin, Mobile App Development)