[Android App with User Login](https://freelancer.com/projects/android-app-development/android-app-wi

[Android App with User Login](https://freelancer.com/projects/android-app-development/android-app-with-user-login-40772495.html) I need an Android application built from the ground up. The core requirement is a smooth, secure user-login flow (email, phone, or social sign-in is fine as long as it is robust and well-documented). This is strictly an application-development job—no marketing or web work. My goal is to monetize the app later, so the code must be clean, scalable, and ready for future features such as in-app payments or push notifications. Key expectations • Android-native code (Kotlin or Java) that follows current Material guidelines • Clear separation between front-end, authentication logic, and any backend you choose (Firebase, Supabase, or a lightweight custom API...