A free program for Android, by IVYMOBILE.

IVY Toolbox is a handy utility app for Android devices. It comes with 6 useful tools that can help you manage your phone easily. It is a tool app that is capable of doing many things. For example, it can turn your phone into a flashlight, help you find your way in the darkness, scan all QR codes, perform all mathematical functions, guide you in the wild, take selfies with a mirror, and more.

The app will also show you what the QR code is for. All you need to do is to scan the QR code. After that, you will be guided to a website. You can download the app for free.