Tennis Strokedex
運動
僅適用於 iPhone
免費 · 專為 iPhone 設計。尚未針對 macOS 驗證。
iPhone
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.
評分與評論
- 此 App 尚未收到足夠的評分或評論,無法顯示概覽。
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.
開發者FENGHUA LIANG指出App的隱私權實務可能包含下方描述的資料處理。如需更多資訊,請參閱 開發者的隱私權政策 。
用來追蹤你的資料
以下資料可能用於在其他公司的 App 和網站上追蹤你:
- 位置
- 識別碼
- 使用狀況資料
會與你連結的資料
系統可能會收集以下資料,並將其與你的身分連結:
- 位置
- 識別碼
- 使用狀況資料
不會與你連結的資料
系統可能會收集以下資料,但不會將其與你的身分連結:
- 識別碼
輔助使用
開發者尚未表示此 App 支援的輔助使用功能。 進一步瞭解
資訊
- 供應商
- FENGHUA LIANG
- 大小
- 5.5 MB
- 類別
- 運動
- 相容性
需要 iOS 26.0 或以上版本。
- iPhone
需要 iOS 26.0 或以上版本。 - Mac
需要 macOS 26.0(或以上版本)以及配備 Apple M1(或以上版本)晶片的 Mac。 - Apple Vision
需要 visionOS 26.0 或以上版本。
- iPhone
- 語言
- 英文
- 年齡分級
4+
- 4+
- 版權
- © 2026 Logan Huang
