QuickResponse codes, more commonly known as QR-Codes are quite mysterious, because you don‘t exactly know what‘s stored inside of them. This app shows you the full content of the QR-Code, unfiltered. You may also scan barcodes, so you do not have to type it manually and get the barcode type.
You are also able to scan any of the codes you can directly with the camera from a photo or screenshot you have previously taken. This means it is possible to do an on-screen QR-Code scan. Just take a screenshot, open this app and hit “select from photo gallery”.