Spotter Range Finder uses your iPhone's camera and the known height of a remote object to calculate the approximate distance to that object.

You can manually input the height of the object from the selection screen, or choose the height from a library of common objects.

With a height selected, center the object in the camera view, and then use the sliders to adjust the camera zoom and the targeting indicators to match the image of the remote object.

The camera view also includes horizontal and vertical leveling indicators. The closer these indicators are to level, the more accurate the calculated distance will be.

Please note: This app will only work on iOS devices with a built in camera.