QR CodeDocument scanner is a free, easy-to-use app that allows you to scan and save any QR code and access its information. It is the best QR code reader for Android phones and tablets. With this app, you can also scan and save all types of codes, including URL, contact, calendar, and many more. You can also easily share them with your friends or family. It is very easy to use, and you don't need to install any other software or add any additional hardware. You just need to install this app on your device, and you are ready to go. It is completely free.