PoS and Inventory Management Solution (Android)

Need a Point of Sale (PoS) and Inventory Management System Android app designed and made for small retail stores (mostly fmcg retailers). -PoS home screen to have auto-arrange image tiles of products in inventory, arranged according to most frequently sold items -record sales and manage inventory in offline mode -product library with thumbnail images, upc codes, purchase and retail price and more. Shopkeeper must be able to add products to inventory with ease by (a) scanning/typing upc code (b) name search (c) manually entering a new product to local and/or global products library -reports menu with pre-designed on-demand inventory and sales reports -user account creation for wholesaler and retailer -end to end inventory view for select items between shopkeeper and wholesaler that supplies to that specific shop, such as viewing current inventory of the product sold to the shop and taking action such as replenishing stock at the shop based on minimum stock level of the item -shopkeeper to be able to connect (using QR code or other method) and send invoice/receipt to customer’s phone for acceptance and payment -mobile to mobile payment option (to be discussed) List of fields and features to be provided to developer once bid is accepted. I have design guidelines, but expect you to use your own expertise to fill in the gaps.