A free app for Android, by Volume Sound Booster.

In the world of commerce, every business has a website and every business has a product that can be purchased online. It is becoming increasingly common for people to purchase products online, which is why they need to have a way to check the authenticity of the product. One of the easiest ways to do this is to scan the QR code that is on the website of the business. If the code that is scanned is correct, the user will be taken to the website. However, if the code is incorrect, the user will be directed to a page that tells them what errors they have made and what they need to do.

So, if you are looking for a reliable QR app, the QR Code Scanner & QR Code Reader, Barcode Scanner app is the perfect one for you.