QR Scanner: Barcode Scanner is a free Android application developed by Kyle Dev that can read and decode various types of QR codes and barcodes. It can scan codes for contacts, products, URLs, Wi-Fi, text, books, E-mails, locations, calendars, and more. The app also supports scanning promotion and coupon codes in shops to get discounts.

One of the best things about QR Scanner: Barcode Scanner is that it supports all QR and barcode formats. The app also features auto-zoom, and all scan history is saved. You can scan QR/barcodes from the gallery and use the flashlight to scan in dark environments. An internet connection is not required to use the app, and privacy is safe, as only camera permission is required.

Using QR Scanner: Barcode Scanner is simple and straightforward. All you need to do is point your camera to the QR code/barcode, and the app will automatically recognize, scan, and decode it. The results and relevant options will then be displayed.

Overall, QR Scanner: Barcode Scanner is a comprehensive tool for QR code and barcode reading, and it's completely free. It's a must-have utility for anyone who frequently uses QR codes and barcodes.