# Tennis Strokedex — AI Tennis Coach & Swing Video > AI-powered tennis swing analysis using video to assess player form. (iPhone/iPad app by FENGHUA LIANG.) - Source: https://appshunter.io/ios/app/tennis-strokedex/id6796067877 (this page in markdown: same URL + `.md`) - Developer: [FENGHUA LIANG](https://appshunter.io/developer/6792573552) - Category: Sports - Price: Free - Rating: 5.00/5 from 7 App Store ratings · 5 written reviews indexed - Age rating: 4+ - Requires: iOS 26.0 · 5 MB - Languages: English - Released: 2026-08-17 - Data updated: 2026-10-16 - Monetization: free - User reviews in markdown: https://appshunter.io/ios/app/tennis-strokedex/id6796067877/reviews.md ## What is Tennis Strokedex? Tennis AI Coach looks at a video of your strokes and tells you what your body did during each swing. Record a session with the camera or pick a clip you already have. The app reads your body position frame by frame using Apple's Vision framework, measures your form at each frame, finds your swings from the peaks in wrist speed, and writes up what looked solid and what to work on. All of it happens on your iPhone. WHAT YOU GET Every session opens into five views. Overview gives you your median form numbers. Video plays the clip back with the skeleton drawn on top. Charts plots each metric over time. Strokes breaks the session down swing by swing with a 0 to 100 form score. Coaching turns the numbers into a short list of strengths and things to focus on. You can save an annotated MP4 with the skeleton and a metric readout burned into the video, or share a summary card of the session. Sessions stay in a library on your phone and reopen instantly. Home shows how your form score has moved across sessions, and you can put two sessions side by side to see what changed between them. WHAT IT MEASURES Knee angle on each leg, so you can see how low you are getting. Elbow angle on each arm. Torso lean, as a signed angle away from vertical. Stance width, as the distance between your ankles relative to your hips. Wrist speed for each arm, which is also how the app works out which arm you hit with. Missing measurements stay missing. If tracking was poor for a swing, that swing is left ungraded rather than given an invented score. PRIVACY There is no account, no server, and no analytics code. Your video is analyzed on the device and stays there. The app asks for the camera and microphone to record, and for add-only access to Photos if you want to save an annotated video. It cannot read or browse your photo library. WHAT IT DOES NOT DO This is a pose coach, so the edges are worth stating. It does not see the ball, the court, or your racket. It does not label a swing as a forehand or a backhand. It tracks one player, the clearest person in the frame. Swing speed is measured in pixels, so it means something within a single clip but is not comparable between clips shot from different distances. That is why speed is left out of the trend line and out of session comparisons, where only the scale-independent form angles are used. GETTING GOOD FOOTAGE Film from the side rather than from behind, keep your whole body in frame, and shoot somewhere with decent light. A few clean groundstrokes read better than a long rally at the far end of the court. ## Key features - Video stroke analysis - Frame-by-frame body position tracking - Form scoring - Swing breakdown - Progress tracking - Annotated video export ## Is Tennis Strokedex safe? Not enough ratings yet to assess Tennis Strokedex. ## Is Tennis Strokedex legit? Tennis Strokedex has limited verification signals. The AppsHunter Legitimacy Score for Tennis Strokedex is 58 out of 100 points across 7 verification signals from App Store and developer data. ## Recent user reviews (5 of 5) All indexed reviews: https://appshunter.io/ios/app/tennis-strokedex/id6796067877/reviews.md ### 5/5 — Most helpful tool ever *2026-08-21* This was actually the best tool I’ve used for improving my form. It helped me hit balls with so much more drive, pace, and depth than before because it pointed out my inconsistencies on every stroke. It helped WAY MORE than just watching a video of myself playing, as the AI system was able to point out flaws I never would have noticed just from watching a plain recording! ### 5/5 — An Outstanding application! *2026-08-21* Amazing UI, incredible idea, and most importantly; professional execution. An amazing free alternative to a real coach. ### 5/5 — Good UI *2026-08-18* I really like the UI of this app ### 5/5 — Absolutely Game-Changing! *2026-08-18* This app is easily one of the best tools I’ve used for improving my game. The swing analysis is incredibly accurate and breaks down form, tempo, and technique in a way that’s clear and actionable. It feels like having a personal coach on court with you 24/7. My consistency and power have improved dramatically since I started using it. If you're serious about taking your tennis game to the next level, this app is the way to go! ### 5/5 — amazing app! *2026-08-18* wow my tennis skills improved so quickly after using this app! ## Frequently asked questions about Tennis Strokedex ### How does TennisAI analyze my tennis swing? TennisAI uses Apple's Vision framework to analyze videos of your strokes frame by frame. It measures your body position and form during each swing, identifying key metrics and providing feedback. ### What specific aspects of my tennis form does TennisAI measure? TennisAI measures knee angle, elbow angle, torso lean, stance width, and wrist speed. It uses these metrics to provide a form score for each swing. ### Can I see my progress over time with TennisAI? Yes, TennisAI allows you to track how your form score has moved across sessions. You can also compare two sessions side-by-side to see what has changed. ### Does TennisAI require an internet connection or account? No, TennisAI is designed for on-device analysis with no account, server, or analytics code. Your video data stays on your iPhone for privacy. ### What kind of feedback does TennisAI provide? TennisAI provides a list of your strengths and areas to focus on, turning the analyzed numbers into actionable coaching advice. ### Can I share my tennis analysis with others? Yes, you can save an annotated MP4 of your swing with skeleton overlays and metric readouts, or share a summary card of your session. ### What are the system requirements for TennisAI? TennisAI is available for iPhone and requires iOS. It was last updated on August 17, 2026, with version 1.0. ### Does TennisAI have ads? No, TennisAI does not contain advertisements. It is a free application with no ads or in-app purchases. ## Version history (last 4 releases) ### 1.3 — 2026-10-07 A new name. TennisAI: Swing Coach is now Tennis Strokedex. Smarter, tougher scoring. Every swing is now graded on what the body does, the things that separate a real stroke from an arm swing: • Shoulder turn: how far you rotate from the backswing through the finish • Knee bend and leg drive: how well you load and push up into the shot • Body-led swing: how much of your racquet speed comes from your trunk, not just your arm • Hand speed, measured against a fixed standard rather than your own best swing • For serves: shoulder tilt in the trophy position, leg drive and reach Every swing is held to the same standard, for every player, so your scores mean the same thing from session to session. A score in the 90s now takes a full turn, real leg drive and a fast swing. Your past sessions have been re-graded with the new scoring, so some scores will be lower than before. Your progress trend still compares like with like. Clearer coaching. "What looks good" and your focus for next time now come straight from your scores. Each session's report shows the key numbers at a glance: swing speed, shoulder turn, knee bend and finish. ### 1.2 — 2026-09-25 New look. A new app icon made for iOS 26, with light, dark and tinted versions to match your Home Screen. New welcome tour. New players can swipe through everything TennisAI does before their first session: form scores for every swing, coaching for each forehand, backhand and serve, tracking you across the net, and hearing each hit. It ends with tips for filming your best video, then sets up your player. ### 1.1 — 2026-09-24 Players • Keep each person's sessions, scores and progress separate on one iPhone. Switch players from Home. • Set your racquet hand so the analysis always follows the arm that swings. • Your existing sessions are kept under your first player. Much better swing detection • Finds you even when filmed from across the court, and ignores other people in view. • Times each stroke from the sound of the ball on your strings. The sound is analyzed on your iPhone and never uploaded. Coaching for every stroke • Serves, forehands and backhands are recognized and coached separately. • Serves are now scored on leg drive, reach and arm extension. Forehands and backhands get a new finish-height score. • See how each stroke type scored in every session report. More accurate scores • Knee and elbow angles are only scored when the camera can actually see them, so front-on videos no longer give misleading feedback. Also • Now supports iOS 26.0 and later. ### 1.0 — 2026-08-17 No release notes. ## Apps similar to Tennis Strokedex | App | Rating | Price | Category | | --- | --- | --- | --- | | [DinkReel](https://appshunter.io/ios/app/dinkreel/id6788795855) | — | Free | Sports | | [NextShot: AI Tennis Coach](https://appshunter.io/ios/app/nextshot-ai-tennis-coach/id6759479362) | — | Free | Sports | | [FuzzyTennis: Play Tennis Daily](https://appshunter.io/ios/app/fuzzytennis-play-tennis-daily/id6757665962) | 5.0 (2) | Free | Sports | | [Sports Betting Tips](https://appshunter.io/ios/app/sports-betting-tips/id6778906550) | 5.0 (1) | Free | Sports | | [Tennis AI: Swing & Serve Coach](https://appshunter.io/ios/app/tennis-ai-swing-and-serve-coach/id6774777838) | 5.0 (7) | Free | Sports | | [Tennis Watch](https://appshunter.io/ios/app/tennis-watch/id6449885082) | 1.0 (1) | $2.99 | Sports | --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-10-16.*