**This is the Ad-free version of Range Finder.Range Finder Pro is a traditional golf range finder for the iPhone. It utilizes the iPhone's camera to take a picture of the hole and ultimately show your distance from the flagstick. Then, you adjust the picture as instructed in the app, and tap use. The picture then comes up on the main screen, and all you have to do is click the Show Yardages button to pull up an overlay of yardages that goes over the picture. Where the top of the flagstick stops is approximately how far you are from your target.It's very quick and easy!Note: These yardages are approximate!