OCR stands for Optical Character Recognition which is a technology to convert image to text. In the old days it takes a super computer to perform a complex OCR operation but thanks to the wonders of technology it is now available for everyone with a smart phone! (Both Android and iOS version are available now)
I decided to create the iOS version because the Android version was a huge success for me, and I received quite a number of requests to have it ported over. It's not just a simple port of the Android version because no code can be reused and it had to be built from scratch and specially crafted for the iOS.