I run a retail shop and want to offer customers a seamless home-delivery experience through a dedicated mobile application that works on both iOS and Android. The app’s scope is focused yet essential for my business growth: shoppers should be able to sign up, place orders, pay securely, and watch their delivery progress in real time. Key features I must see: • User registration & login • Real-time order tracking • Integrated payment gateway Please send a detailed project proposal outlining your technical approach, timeline, and milestone breakdown so I can assess how well your plan aligns with these requirements.