What is the of the app that for the iphone that you can go two to store and they scan the bar code on your phone?

The app you’re referring to is likely Apple Wallet or a similar mobile payment app, which allows users to store digital versions of loyalty cards, coupons, and tickets. Some retailers also have their own apps that enable customers to scan barcodes directly from their phones at checkout. Additionally, apps like google Pay or specific store apps (like Target or Walmart) offer similar functionality.