TargetScan App turns your iPhone/iPad into a Target Scoring System. Just take a photo of your paper target and the App will automatically calculate the score! TargetScan will also help you analyse your shooting group calculating: Windage, Elevation, Mean Radius and Extreme Spread so you can easily find out whether you need to adjust the sights or find out which pellets work best for you. Keep track of your previous shooting sessions and monitor the progress you are making. The App costs less than a scoring gauge!