A free program for Android, by Application4u.

Lightning QR code scanner for Android is an easy-to-use application for scanning QR codes. You can quickly and easily read and decode QR codes from a variety of sources. This app is a fast, easy-to-use tool that makes it easy to view and access information from a mobile device.

It supports many different types of QR codes, including URL, email, product, and contact information. You can also view information from a variety of other sources, such as websites, social media, and other mobile apps. It also has a torch feature to easily can QR codes in the dark.