Yardage is very accurate and has a great display so you can easily see yardages when using your phone in the golf cart. I use this app in conjunction with my rangefinder and the two work great together. I have compared to yardages to the GPS systems used by the golf carts as well as my laser rangefinder and it is very accurate. The app also will measure your drive distances if you use the measuring option. I purchased the optional upgrade which is very good as it shows a graphical display all of the courses. This is a fantastic every golfer should have as a reference. A playing partner showed me this app while were playing and Im glad he did. It is a fantastic app perfect for every golfer.