There are many QR code scanners and creators available. However, I really like this app because you can scan with your camera or if you have an existing QR code in your camera roll you are able to scan from your photo albums. I like to create QR code worksheets to do matching word or matching phrase activities. Students like scanning the codes, and I do not have to spend enormous amounts of time making class sets of cards. No more photocopying or laminating.
This app allows you to create QR codes as well, and the interface has a very user friendly design. However, I haven’t used this feature as I still prefer creating worksheets etc using my laptop.
Overall, this is an excellent app and best of all it is free.