Swing Speed is the speed of the clubhead’s sweet spot at impact, measured in miles per hour (mph). Swing speed will depend on age, ability, mobility, strength and power, along with the distance of the shot and club selection. Due to these dependencies, a goal for Swing Speed is not automatically set.
Peak Hand Speed
Peak Hand Speed is the observed maximum speed of the hands as measured on the grip of the club, measured in miles per hour (mph). When taking full swing shots, Peak Hand Speed should occur prior to the moment of impact, very close to the commit time in the swing when the hands transfer the energy of the swing into the shaft enabling the club head to move faster and pass the hands speed. This is reflected in the range automatically set in the app. When taking short game or bunker shots, Peak Hand Speed should occur prior to the moment of impact but will vary with the type of shot you are hitting.
Attack angle is the up or downward movement of the club head approaching the ball at impact, measured relative to the horizon. With irons, most great ball strikers have a slightly downward attack angle. With wedges, most players with a strong short game, as well as most great ball bunker players, have a slightly downward attack angle. The goal ranges in the app have been determined using data from the professional tours.