See Your Swing
Get Better
TennisFlow is a pro-level tennis coach in your pocket. Record a video, get frame-by-frame analysis, scores, and actionable tips in seconds. See measurable progress in 7 days.
- Frame-by-frame pose analysis in seconds
- 50+ pro tutorials, 5 languages
- Privacy-first — your videos stay yours
Features
One app. Three coaches' worth.
AI motion analysis, growth tracking, and a pro tutorial library — TennisFlow covers the full arc from beginner to advanced.
AI Motion Analysis
Upload a training video and our AI tracks 17 key body points frame-by-frame, grading shoulder rotation, weight transfer, and swing path with actionable tips in seconds.
Growth Tracking
Visualize your journey. Every swing counts.
Smart Plans
Weekly training plans tuned to your weakest strokes.
Technique Library
Forehand, backhand, serve, volley, footwork, tactics — 50+ pro lessons, each broken down into drills you can act on.
Truly Multilingual
UI, analysis reports, and tutorial captions — switch seamlessly across 5 languages. Train anywhere, read in your language.
Privacy-first
Your videos stay on your device by default. Optional E2E iCloud backup. Never used to train models.
Product Tour
Every pixel
serves your training
A clean information hierarchy keeps you focused on your swing — not the app.
How It Works
Three steps. Same-day results.
Record your swing
Shoot a 5–30 second horizontal clip of your swing with any iPhone. Place it by the sideline — that's it.
AI analyzes in seconds
TennisFlow marks keyframes, detects 17 body points, and delivers scores plus personalized tips.
Watch yourself improve
Your stats compound over sessions. Compare side-by-side, pair with drills from the library to attack weak spots.
Pricing
Start free. Upgrade only if you love it.
Pro comes with a 7-day free trial. Cancel anytime.
Free
Get a taste. Enough to get started.
Free forever
- Basic analysis — 3 / month
- Full training history
- 10 basic tutorials
- Advanced growth reports
- 50+ pro tutorials
Pro
Serious players. Full AI, zero limits.
Billed $69.9/year · 41% off monthly
- Unlimited AI analysis
- All 50+ pro tutorials
- Personalized training plans
- Advanced reports & side-by-side
- Multi-device sync + priority support
Apple billing · Cancel anytime · No ads
Testimonials
What players are saying
My forehand feels brand new in a month.
The AI nailed my weight-lean issue instantly. The drill plan worked, and progress was visible in weeks — way more affordable than a private coach.
Data turned my students into believers.
I have all my students record with TennisFlow between lessons. We review the reports before each session — lesson efficiency is up 30% easily.
In Paris, reading reports in my language.
Switching to Chinese feels like home. Tutorial captions are fully localized — a godsend for international students.
FAQ