Sales System is a free Android app developed by M-Shop Systems, designed to help shop owners manage their inventory, sales, and purchases with ease. With Sales System, you can easily work with products, register purchases and sales, perform revaluations and inventory scanning, and generate detailed reports.

The app offers an intuitive user interface that makes it easy to set prices, create barcodes for easy scanning, and manage your inventory with ease. You can register purchases and sales on your POS (Point of Sale) and keep track of your transactions in real-time.

In addition, Sales System provides detailed reports on your sales, profit, and margin percentage, as well as your stock levels. You can even save your documents and reports to external files for secure storage and easy access.