BarMaker

BarMaker can help you to create/scan QR Code or Barcode images or transfer contacts, location, clipboard and so on. You can use it to create/scan QR Code or Barcode. You can also push the result into Mac/PC browser after scanning and visit the Scanning Result from PC/Mac's browser. You can custom your QR Code or Barcode (like change color or embed an image on QR Code or add your custom text). Also you can create qr code from Safari by pressing share button to share url. It also supports scanning for white barcodes on black background.

It supports Drag&Drop on iPad. You can drag barcode image from the app to another app or drag a item from Favorites/History list to another app and it will auto make it to barcode image and insert to target App. You can also drop a barcode image to main UI to decode.

BarMaker supports following formats:
QR Code 
Code-39 
Code-128 
EAN-8 
EAN-13 
ITF 
UPC-A 
Codabar 
PDF 417 
Aztec 
DataMatrix