The handicap index is a number that represents a player’s scoring potential. The lower this is, the better for a golfer. That means he or she needs only a few shots to get to the hole. If a person has a handicap index of 13, then his best day will probably result in 13 strokes over par.
It is important to note that the handicap is not the average score but the highest potential. Some might reach this level consistently. Others might only touch the score from time to time. Usually, those with lower handicaps are able to get more consistent results.
A handicap tracker provides a way for golfers to monitor their progress over time. It can also be fun to check the index of their friends for inspiration. Online trackers are generally for personal use as official events have their own system of determining the handicap.