QR Scanner: Barcode Scanner is a free application that helps Android devices scan QR codes. It can read and decode all kinds of QR codes and barcodes, such as URLs, Wi-Fi, books, etc., and supports all QR/barcode formats.

There's no need for you to zoom in/out the codes since it has an auto zoom feature that can scan codes from far away. It has a built-in flashlight so you can scan codes even if you're in dark surroundings. You can use also use it to scan promo and coupon codes to get discounts from your favorite stores.

There is no need for an internet connection so you can use it anywhere, anytime!