Stuff we love: 11 must-have gadgets, apps and stroke-saving tools

1 of 2 Courtesy Arccos

Arccos 360 Performance Tracking System, $250

This really is the age of knowing…everything. Distance to the pin, distance to clear the bunker, or how off line your driver has been all day. The screw-in caps measure all the numbers that an amateur really wants—distance, consistency, fairways hit (or missed), putts recorded, etc.—and tosses it into a slick smartphone interface. It's one of those things where you don't know what you're missing until you try it.

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This model is so good that it should almost be mandatory, especially if the goal really is to speed up play. It can shoot up to 400 yards, and with the slope calculation feature turned on it also provides the adjusted distance (a must for practice rounds). The best part? The unit jolts when it locks in the target. For me, it's confidence that the yardage is correct.

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