Five steps. About fifteen minutes for the first one.
Sign up. No credit card. The app's free until you decide it isn't.
Install Woosh on your phone. Sign in. The first Combine setup takes about 30 seconds.
Phone behind the ball — bag-cart shelf or low tripod. Find a flat lane (Stations 1 and 2) and a slight breaker in each direction (Station 3). The app guides you through the eighteen putts.
Overall out of 100. Five sub-scores. Your biggest leak named in coaching language. One or two drills tied to it. The whole readout in two screens, no scrolling through metrics you don't need.
Three Combines for a provisional Putting Handicap. Five for an established one. From there it updates as you go — best 5 of your last 10. The number gets more honest as you take more Combines.
Take your first Combine free. The whole flow, end to end, in about fifteen minutes.