A computer detects a user computing device when the user enters the store and receives the user's purchase history and preference information from a database. The computer receives a list and/or recipe that the user inputs into the application. This list and/or recipe is a list of items that the user plans to purchase. The computer identifies an item on the list, determines whether the item is in stock, and generates a route through the store so the user will reach each item on his list. The computer transmits the route to the user's computing device to be displayed.