Ralleo
Swing analysis & visualizer
Free · Designed for iPad. Not verified for macOS.
Record a swing. Ralleo measures your joint angles in 3D, scores six parts of the stroke, and tells you the one thing to fix first.
Ralleo turns a phone video of your swing into measured feedback.
Record or upload a forehand, backhand, serve or volley. Ralleo tracks your body in 3D, measures the joint angles and timing a coach actually looks at, and scores six parts of the swing: preparation, swing path, contact point, follow-through, balance and footwork.
WHAT YOU GET
• A 0–100 score for each category, with the measurement behind it
• Your tracked skeleton overlaid on your own clip, frame by frame
• The single thing to fix first, in plain language
• Drills matched to your weakest category
• A pro reference comparison for the same stroke
HONEST ABOUT LIMITS
Ralleo measures what one camera can actually see. Joint angles are measured in 3D, but cues that depend on depth — like how far in front of your body you strike the ball — are marked N/A when the camera angle can't support them, rather than guessed. Estimated values are labelled as estimates.
YOUR CLIPS ARE YOURS
Nothing is posted publicly unless you choose to share it, and shared clips are reviewed before they go public. You can report or block other users, and you can delete your account and all its data from inside the app.
Ralleo gives training guidance, not professional or medical advice.
The developer, Jiangong Chen, 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 Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Jiangong Chen
- Size
- 56.4 MB
- Category
- Sports
- Compatibility
Requires iOS 15.1 or later.
- iPhone
Requires iOS 15.1 or later. - iPad
Requires iPadOS 15.1 or later. - iPod touch
Requires iOS 15.1 or later. - Mac
Requires macOS 12.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English
- Age Rating
13+
- 13+
- This app is rated 13+ with content restrictions.
Some content may be rated higher, and may therefore be restricted and managed by the developer through in-app controls. - In-App Controls
Age Assurance
Contains
Messaging and Chat
User-Generated Content
Social Media
Social Media (Age Restricted)
- Copyright
- © 2026 Siyuan Chen