SwingShadow
Tennis analysis on your phone
Only for iPhone
Free · Designed for iPhone. Not verified for macOS.
iPhone
Import a practice video shot from behind the player. It plays every stroke back so you can study your form. The analysis runs on your device and works offline.
Import a tennis video shot from behind the player. SwingShadow analyzes it on your iPhone and marks forehands, backhands, slices and serves on the timeline. Tap a mark to play that stroke.
DETECTION
• SwingShadow colors each stroke by type and groups the video into the stretches where you were hitting
• Your library shows a count of each stroke type for every video
• Turn on the skeleton overlay to check your body position through the swing
• Relabel any stroke SwingShadow got wrong
SPLIT-SCREEN COMPARE
• Play two strokes side by side, lined up at contact, and slow both to 0.5× or 0.25×
• Put today's forehand next to last month's and compare your take-back height and contact point
• Import a pro match filmed from behind the baseline, and once SwingShadow analyzes it, you can set a pro's forehand next to yours
HIGHLIGHT REELS
• Pick the strokes you want, save them to Photos as one video, and send it to your hitting partner or coach
• Exports have no watermark unless you turn it on in Settings
PRIVACY
• SwingShadow analyzes your videos on your iPhone, works offline, and needs no account
• Your videos stay on your phone. When you correct a label, you can choose to share that one stroke to help improve detection, and you can delete anything you've shared from Settings
HOW TO FILM
Set your phone at court level behind the baseline, facing the player's back, with their whole body in frame. SwingShadow doesn't support video filmed from the side or front yet.
Requires iOS 26 or later.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
The developer, 明亮 李, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- User Content
- Identifiers
- Diagnostics
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- 明亮 李
- Size
- 18.4 MB
- Category
- Sports
- Compatibility
Requires iOS 26.0 or later.
- iPhone
Requires iOS 26.0 or later. - Mac
Requires macOS 26.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 26.0 or later.
- iPhone
- Languages
English and 4 more
- English, Japanese, Korean, Simplified Chinese, Traditional Chinese
- Age Rating
4+
- 4+
- Copyright
- © 2026 Matthew Lee