Milk Subscription Delivery App (Android + iOS + Web Admin) # Project Overview We require development of a subscription-based milk & dairy delivery system for a hyperlocal area. Initial expected users: 50–3,000 System must be scalable to 10,000 users. # Required Deliverables * Android customer app * iOS customer app * Web-based admin dashboard * Backend + database * Payment gateway integration * Basic delivery list module * Full source code handover * Deployment support (Play Store & App Store) * Minimum 3 months post-launch bug support # Core Functional Requirements ## 1. Customer App ### Authentication & Profile * Mobile OTP login * Address entry with locality validation * Manual admin approval for new users ### Product Catalogue * Product listing (milk, curd, paneer, etc.) * Image, quantity, price * Admin-controlled availability ### Subscriptions & Scheduling * Daily subscription * Weekly subscription * One-time orders * Modify/cancel until 5:00 PM cutoff for next-day delivery * Automatic lock after cutoff * Pause for date range * Auto-resume after pause Cutoff logic must function reliably. ### Orders * Order confirmation * Order history (minimum last 50) * Downloadable PDF invoice * Complaint/missed delivery option * Click-to-call support button ### Wallet & Payments (Mandatory) * Secure payment gateway (UPI, cards, etc.) * Prepaid wallet system * Add money to wallet * Daily auto-deduction * Low balance alerts * Wallet transaction history * Refunds credited to wallet ### Notifications * Order confirmation * Low wallet balance * Subscription updates * Admin announcements ## 2. Admin Dashboard (Web) ### User Management * Approve/reject users * Activate/deactivate accounts * View wallet balance * View subscriptions ### Product Management * Add/edit/delete products * Update pricing * Enable/disable availability ### Orders & Reporting * View all active subscriptions * Next-day consolidated product requirement report * Manual override option * Wallet ledger per customer * Daily sales report * Monthly summary report * Basic GST-ready sales summary ## 3. Delivery Module * Simple delivery list view * Customer name * Address * Product & quantity * No routing/navigation required # Technical Requirements * Scalable backend architecture * Secure data handling * Role-based admin access * Regular database backup * Clean, maintainable code * Full source code ownership upon payment # Important Notes for Bidders Please include in proposal: * Tech stack (frontend + backend) * Hosting architecture * Database choice * Timeline * Maintenance terms after 3 months * Confirmation of source code handover * Examples of similar apps developed