I need an end-to-end Android mobile sales app that lets my customers browse, order, and pay from their phones while giving me a straightforward way to track stock and daily sales. All development must target Android first; you’re free to use Kotlin, Java, Flutter, or React Native as long as the final APK is stable and ready for Play Store submission. I’ll share my brand assets, product data, and any API keys once we start. The UI should feel modern and lightweight, and I want the codebase clean enough for future updates. Deliverables • Full Android source code • Signed release-ready APK • Brief setup / deployment guide (one-pager is fine) Please include in your bid a short outline of the tech stack you prefer, your estimated timeline, and a quick note on how you’ll ensure secure payments and smooth order handling.