You get a new rifle and optics and head to the range. You aimed the target at 100 yard and pull the trigger, so exciting! But wait, where is the bullet hole? You set the target back to 50 yard, shot again. Still, there is no bullet hole. You move the target back to 25 yard and finally on the paper. It's 5 inch high and 6 inch to the left, no wonder.
You are able to get the installer of Boresighter 1.1 free of charge and have a look at users' reviews on Droid Informer. The app works fine on Android 4.0 and above. It's secure to download this application. Reloader's Cloud is the developer of the tool which is included in the Sports category.