TennisServe: Serve Analysis

Film one serve. TennisServe finds the one thing costing you the most and gives you a drill for it. HOW IT WORKS • Record in the app in slow motion, or pick a Slo-mo clip from Photos. • The app tracks your body through all eight parts of the serve: stance, toss, legs and coil, racket drop, swing up, contact, follow-through, landing. • More than 30 checks are rated against published serve biomechanics, foundation first: legs and base before arm and wrist. • Coach mode shows one fix at a time, with a drill and a feel cue. Detailed mode shows every measurement, stage stills, joint angles and charts. • The score is honest about its reach. It shows what the camera measured and how far it can rise once you rate the checks video cannot see or add a second camera. • Film together: one iPhone hosts and others join by scanning its code. One tap starts every camera, and the host reads the serve…