I’m building an end-to-end grocery marketplace on Android and need two companion apps—one for shoppers and one for store owners—ready for smooth publication on Google Play. Customer app Shoppers must be able to browse a full product catalogue, search quickly, pick quantities, add items to a cart, choose Cash-on-Delivery at checkout, and place the order. The flow has to feel as simple as any modern grocery app, with clean Material Design and responsive performance. Merchant app Store owners should manage inventory in real time, receive instant order notifications, and view sales analytics that help them track daily, weekly, and monthly performance. Play Store delivery When development is finished I expect signed AABs, screenshots, feature graphics and a short walkthrough of the release process so both apps pass Google’s latest policy checks and go live without issues. Source code and concise documentation are part of the hand-off. I’m open to your preferred tech stack—native Kotlin, Flutter, or React Native—as long as the final experience is stable, fast, and easy for me to maintain.