SalesPro – Flutter POS Inventory Management App With Firebase and Invoice Printing using Bluetooth Thermal Printer is as the name says is dominating and powerful Flutter app contains complete app templates, ready to use screens, widgets, illustrations and stunning screens covering Mobile POS Inventory app.
You can down from here source code
https://codecanyon.net/item/salespro-flutter-pos-inventory-management-app-with-firebase/34495831