FastQR is a free barcode scanner app for Android devices. It can scan and read all types of QR codes and barcodes. You don't need to download anything. Just open the app, point the camera at the code, and you're done! You don't need to save it or even take a picture. The app has a really simple and clean interface, and it works offline. You don't need to do anything else.

FastQR can also save the barcode and QR code information. So, if you scan a code and it gives you information, you can save it in the history tab of the app. This way, you can access it later.

QR codes are everywhere. You can find them on websites, in magazines, on signs, and in many other places. They're an important part of our everyday life. So, you don't need to download anything to read them.