Comprehensive Multi-Vendor Marketplace Development

Freelance App Development Quotation – 3-App Marketplace Create a professional, client-ready freelancing quotation/proposal for the development of a complete multi-vendor marketplace platform consisting of 3 applications: 1. Customer App The customer application should allow users to: * Sign up/login using mobile number, email, or OTP * Manage profile and addresses * Browse building materials/products * Search and filter products * View product details, images, prices, and availability * Select quantity and add products to cart * Place orders * Select delivery address * Choose available payment methods * View order confirmation * Track order status * View order history * Cancel orders according to defined conditions * Request support/help * Receive push notifications * Submit ratings and reviews * Manage wishlist/favourites 2. Vendor App The vendor application should allow shopkeepers/vendors to: * Register and submit business details * Login securely * Create and manage their store profile * Add, edit, and remove products * Upload product images * Set prices and inventory * Manage product availability * Receive new order notifications * Accept/reject orders * Update order status * View pending, active, completed, and cancelled orders * View sales/order history * Track earnings * View basic business analytics * Manage customer orders * Contact platform support 3. Super Admin Panel The Super Admin system should provide complete platform management: * Secure admin login * Dashboard with overall business statistics * Customer management * Vendor management * Vendor approval/rejection * Product management * Category and subcategory management * Inventory monitoring * Order management * Order status management * Payment/order transaction monitoring * Commission management * Offers and coupon management * Banner management * Customer/vendor account management * Reports and analytics * Notifications management * Complaint/support management * Reviews and ratings management * Platform settings * Admin roles and permissions * Database management * Basic activity logs Technology Requirements The freelancer should propose a suitable technology stack, preferably: * Mobile Apps: Flutter * Backend: Node.js / Express or equivalent * Database: MongoDB / PostgreSQL * Admin Panel: React.js or equivalent * API: REST API * Authentication: OTP/JWT-based authentication * Notifications: Firebase Cloud Messaging * Cloud Hosting: AWS / Firebase / equivalent The final quotation should clearly mention if any third-party services have additional charges. Deliverables The freelancer must provide: 1. Customer Mobile App 2. Vendor Mobile App 3. Super Admin Web Panel 4. Backend/API 5. Database setup 6. Source code 7. UI/UX implementation 8. API documentation 9. Deployment assistance 10. Bug fixing during the agreed warranty period 11. Basic technical documentation Quotation Structure Prepare the quotation in a professional format with: * Project overview * Scope of work * Customer App features * Vendor App features * Super Admin features * Technology stack * UI/UX development * Backend development * Testing and QA * Deployment * Source-code ownership * Project timeline * Milestone/payment schedule * Warranty/support period * Third-party charges * Maintenance charges * Total project cost Give 3 pricing packages: Basic Package Suitable for an MVP with essential marketplace features. Professional Package Complete marketplace with advanced management, notifications, analytics, and payment/order functionality. Premium Package Full-featured production-ready platform with advanced analytics, automation, security, scalability, and additional integrations.