FormCourt: AI Tennis Coach

Film one serve. Get a score out of 10, the exact frame you lose power, and the drill that fixes it. Free to start. No account. Nothing uploaded — the analysis runs on your phone. Serve, forehand and backhand. Eleven measured parameters on the serve, each shown with its number. Prop your phone on the fence, film side-on, and FormCourt tracks your body through the swing, measures the angles that decide the shot, and gives you a score with the reason behind it — not a vague "work on your timing", but a number on the thing that cost you the point. YOUR VIDEO NEVER LEAVES YOUR PHONE The analysis runs on-device. Your footage and the pose data are never uploaded, with or without an account. Sign in only if you want your scores backed up — the app works fully without one. No cloud queue, no waiting, no upload on court Wi-Fi. MEASURED, NOT GUESSED Eleven measured parameters on the serve: weight shift, toss release, toss height, knee bend at the trophy, elbow position, tossing arm, leg drive, shoulder tilt, reach at contact, head position and the landing. Ten more on the forehand and ten on the backhand. Each one is graded against a band drawn from published stroke kinematics, and each one shows you the number it was graded on. SEE THE FIX, DON'T JUST READ IT Playback freezes on the frames that matter — toss, trophy, contact, landing — and draws your limb against the position it should have been in. Lime is you. Dashed is the target. ONE THING TO FIX, NOT A LIST The result screen names the single parameter costing you the most, shows the frame where you lost it, and attaches the one drill that fixes it. Add it to your week with one tap. Analyse the same stroke again and the screen tracks how far that one parameter has moved. A WEEK BUILT FROM YOUR WEAKEST LINK 67 drills with step-by-step figures. FormCourt picks the ones your lowest scores ask for, works around your court days and coaching sessions, and leaves out anything your injuries rule out. WATCH IT MOVE Every stroke you keep goes into a strength profile across serve, forehand and backhand, with the delta against your last one. Half-seen strokes are marked and left out of your trends, so a bad camera angle never moves your progress. IF YOU PLAY LIKE THIS, IT'S FOR YOU You play once or twice a week. You've been told to "use your legs more" and you have no idea whether you do. You can't tell from a phone video what's actually wrong. You are not filming for a highlight reel — you want to know which single thing to work on this week. That's the whole app. NO TRIPOD RIG, NO RADAR GUN, NO SECOND PERSON One phone, propped up, filmed from the side. That's the entire setup. WHAT'S FREE AND WHAT'S NOT Three full analyses every month, free — the overall score, the parameter breakdown with every number, and the one fix to work on. Your last three analyses stay in your history. FORMCOURT PRO Unlimited analyses, full history, and the week's plan weighted to your weakest areas. $12.99 a month, or $79.99 a year with the first week free. Subscriptions renew automatically unless cancelled at least 24 hours before the period ends, and are managed in your Apple ID settings. Built by one developer who also plays badly. Email is answered by a human: [email protected] FormCourt gives technique feedback, not medical advice. Stop if something hurts. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ FormCourt Terms of Service: https://formcourt.com/terms Privacy Policy: https://formcourt.com/privacy