I’m ready to move from idea to launch and need a seasoned Android developer who can craft a sleek, stable app that runs seamlessly on both smartphones and tablets. While the core concept is solid, I’m still open to refining the exact feature-set together—user authentication, push notifications, or even in-app purchases may make sense once we map the user journey. Here’s what I’m after: • One universal Android build that automatically adapts its UI and performance to a wide range of screen sizes and densities. • Clean, well-documented Kotlin or Java code (your preference) pushed to a private Git repository so I can follow progress. • A polished APK plus Play Store–ready bundle, complete with signed keystore, app-level icons, and compliant manifest. • Brief hand-off session (live or recorded) walking me through the architecture and how to trigger future builds. Acceptance criteria will be straightforward: the app installs without warnings on the latest Android OS, passes basic UX testing on both a mid-range phone and a 10-inch tablet, and meets all Play Store policy checks. If you’ve shipped responsive Android apps before and can demonstrate that with a small portfolio or repo snippet, I’d love to hear how you would architect this build and what timeline you’d need.