Take the guesswork out of placing sprinklers on your lawn and accurately measure the lawn area with Lawnsim. The process starts with walking the perimeter of the lawn and getting its profile into the app. Once that is done then you move to the simulator. The lawn is drawn from your profile and the app will place sprinkler heads automatically to meet your specs. You can further optimize the placement with editing controls that provide for moving, changing direction, changing spray angle and radius of each sprinkler head individually. When you are done you will know that the sprinklers are optimally placed for your lawn and you will not need to engage in the time consuming and frustrating task of moving them around on the actual lawn. The Pro version of this app provides for saving multiple lawns and emailing results otherwise Lite and Pro are the same.