Simple, beautiful, fast, and free. Scan QR codes and follow links with a single tap. - Fully automatic... no dragging pictures to resize! - Starts with the camera view and results appear on the same screen. No wading through menus just to scan and follow a link. - Retina Display only! Designed in high resolution right from the start. (iPhone 4/4S only) - Free!OneTap QR is a QR reader (QR scanner) produced by Rosette Research, a company specializing in computer vision and image processing.