Mobile Shop Manager is a complete and smart product selling management system for mobile phone and accessories shops. To keep smooth performance and security, it is built with Python-Flask.

Features in detail:
--> Product Management — Add, edit, delete products with category, brand, model, purchase price, selling price and stock quantity.
--> POS / Sales System — Create sales with multiple products in one transaction, automatic stock deduction and invoice number generation.
--> Customer Management — Store customer profiles with phone, email, address and full purchase history.
--> Inventory Tracking — Real-time stock levels with low stock and out-of-stock alerts.
--> Sales Reports — Daily and monthly sales summary, profit analysis, top 10 best-selling products.
--> Payment Methods — Supports Cash, bKash, Nagad, Rocket and Card payments record system.
--> Chart.js Analytics — Visual revenue charts, category-wise sales breakdown and payment method analysis.
--> Invoice Printing — Browser-based invoice print with auto-generated invoice number.
--> CSV Export — Export sales and product data to CSV for Excel.
--> Demo Data Loader — seed_data.py script to populate sample products, customers and sales instantly.
--> Clean Codebase — Well-structured Python Flask app with separate models, routes and templates.
--> SQLite Database — Zero configuration, auto-created on first run, no server setup needed.
--> Bootstrap UI — Responsive design, works on desktop and tablet browsers.