This app can be used for scanning QR codes and barcodes, which are short strings of characters that can be used to store information about a particular item. You can use it to get information about a product you want to purchase, to find out a restaurant's menu, or to get directions to a place. It is a fast and efficient way to get the information you need.

The best part of this app is that it is free, and you don't have to pay to use it. 
QR code scanner is a free barcode scanner app that is capable of scanning all types of 2D QR codes.