There are a lot of apps that make it easy to scan with your iPhone, but I'll go through my picks for the best QR code reader apps on iPhone. Take a look at some of the best barcode and QR code scanner apps for iPhone. You can scan products for compare prices to save money, get deals and do. To scan a QR code you need a QR code reader /scanner. Here are our top picks of the best QR code readers for you to choose from.:).