BidCart is a grocery shopping application integrated with bidding system. Customer can select their desired grocery items using mobile app. Once they've added all the items they need, they can submit a request for these products. This request will be sent out to all the registered store owners in the area, who can then compete by offering their bids for the customer's items. The customer can review the offers and choose the one that best suits their preferences. If they don't find a satisfactory deal, they also have the option to expand the radius to reach more stores. Upon agreeing on the price for the groceries, a unique key will be generated for the order. This key will contain information about the customer, the order total, the customer's address, and the store's address. If the customer prefers to pick up the order themselves, they can visit the store, scan the key, and collect their items. Alternatively, if they opt for home delivery, the store owner can arrange for the delivery using a reliable delivery service.