Tennis Strokedex
体育
仅适用于 iPhone
免费 · 专为 iPhone 设计。未针对 macOS 验证。
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.
评分及评论
- 此 App 尚未收到足够的评分或评论,无法显示整体评分。
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.
开发者“FENGHUA LIANG”已表明该 App 的隐私规范可能包括下述数据处理方式。更多相关信息,请参阅 开发者隐私政策 。
用于追踪你的数据
以下数据可能会用于在其他公司的 App 和网站中追踪你:
- 位置
- 标识符
- 使用数据
与你关联的数据
开发者可能会收集以下数据,且数据与你的身份关联:
- 位置
- 标识符
- 使用数据
未与你关联的数据
开发者可能会收集以下数据,但数据不会关联你的身份:
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辅助功能
开发者尚未表明此 App 支持哪些辅助功能。 进一步了解
信息
- 提供者
- FENGHUA LIANG
- 大小
- 5.5 MB
- 类别
- 体育
- 兼容性
设备需装有 iOS 26.0 或更高版本。
- iPhone
设备需装有 iOS 26.0 或更高版本。 - Mac
需要 macOS 26.0 或更高版本以及装有 Apple M1 或更高版本芯片的 Mac。 - Apple Vision
设备需装有 visionOS 26.0 或更高版本。
- iPhone
- 语言
- 英语
- 年龄分级
4+
- 4+
- 版权
- © 2026 Logan Huang
