A free program for Android, by Gaiel Soft.
The best application in the Google Play store for scanning QR codes and barcodes. It can work offline, and it can also search for information online.
This application is very easy to use, you just need to open it and point the camera to the QR code or the barcode, then it will be automatically recognized.
It can read different information like website URL, phone number, text, email, and contact information. It can also read product information and search for it online.
You can save the information you want to use later and you can also share it with your friends.
It can work on all Android devices, even on tablets.