AI Tennis Stroke Analysis — Free for Every Level
Upload a video of your forehand, backhand, or serve. Our AI diagnoses your stroke faults phase-by-phase and builds a personalized drill plan — free.
- 100% free
- Private by default
What your Tennis analysis will tell you
We lead with your single highest-priority fix — here are the questions it answers first.
Why you double fault
See the serve mechanics behind it — toss placement, trophy position, and pronation timing — phase by phase.
Why your forehand misses
Spot late contact, an early shoulder turn, or a low finish so your biggest shot stops breaking down under pressure.
Where you lose easy points
Trace the pattern errors — contact point and follow-through height — that turn winnable rallies into unforced errors.
Start with your miss
Choose your problem
Pick what's actually happening in your swing — get the likely cause, one fix, and a drill to prove it.
Tennis Strokes SwingVantage Covers
Each stroke has a dedicated phase checklist aligned with professional-tour technical models.
Forehand
Unit turn, contact point depth, follow-through height
Backhand (2H)
Hip-shoulder separation, left-arm drive, extension
Backhand (1H)
Shoulder rotation, grip position, finish height
Serve
Toss placement, trophy position, pronation timing
Volley
Compact stroke, contact point in front, split step
Overhead
Shoulder turn, trophy position, contact above head
How Tennis Stroke Analysis Works
- 1
Upload Your Video
Film from the side or behind. Any phone camera works. Upload directly to SwingVantage.
- 2
AI Diagnoses Each Phase
The system checks preparation, backswing, forward swing, contact, and follow-through against technical benchmarks.
- 3
Train With Purpose
Get targeted drills, a weekly practice schedule, and progress tracking for each stroke.
The features behind your tennis analysis
Each part of your stroke workflow has a full guide — tap any to learn how to use it.
AI Diagnostic Engine
A rules-based engine compares your data against sport-specific benchmarks and identifies your highest-priority swing fault — ranked by severity, confidence, and impact on performance.
Swing Video Upload
Upload a video of your swing from the face-on, down-the-line, or sport-specific angle. SwingVantage segments the video into phases and provides coaching notes for each phase.
Phase-by-Phase Timeline
Each sport has its own swing phases. Golf: address, backswing, transition, downswing, impact, follow-through. Tennis, pickleball, padel, baseball, and softball have sport-appropriate phases.
Fix Stack — One Fix at a Time
SwingVantage finds your single highest-impact issue and turns it into a three-step loop: one body cue to feel, the best-matched drill for your level and the gear you have, and an honest before/after retest.
Motion Lab (3D)
Turn a phone clip into a 3D figure of your motion you can spin, slow down, and step through — with a phase-by-phase breakdown, scores for power, rotation, balance, sequencing, timing, and consistency, your top 3 fixes, and a practice plan.
Athletic Journey
Your personalized roadmap from beginner to professional-level performance. It classifies your current stage from a blend of your profile, any ratings, your videos, logged play, and practice — then shows what to work on next and builds a weekly plan.
What SwingVantage can and can't tell you
Every result carries the same honest label everywhere you see it — so you always know what's precise, what's an estimate, and what to trust for your next session. Our free engine does the everyday read; AI is an optional upgrade when you want more depth.
Measured
Read straight from your launch monitor or sensor data. The most precise number we can show.
Estimated
Our free coaching engine compares your swing to research benchmarks for your sport and level. Trustworthy direction you can train on today — no AI required.
Inferred
Want more detail? Optional AI reads your video frames for extra depth on top of the free read. Single-camera limits still apply.
Self-reported
Based on what you describe yourself. Useful context, and as accurate as the details you share.
Frequently Asked Questions
- What tennis strokes can SwingVantage analyze?
- SwingVantage analyzes forehands, backhands (one-handed and two-handed), serves, volleys, and overhead smashes. Each stroke type has its own phase-by-phase checklist based on professional-tour technical models.
- Do I need a tennis sensor or Hawk-Eye data?
- No sensor is required. SwingVantage can analyze a simple phone video. If you have data from a tennis sensor (racquet speed, spin rate, efficiency), you can also import that for more detailed analysis.
- What does the AI look for in a tennis swing?
- The system checks shoulder unit turn, hip-to-shoulder separation, contact point depth and height, racquet path angle, follow-through position, grip pressure patterns, and footwork sequencing.
- Can SwingVantage help me fix my double faults?
- Yes. SwingVantage identifies serve mechanics issues — toss placement, trophy position, pronation timing, and contact point — that are the most common causes of double faults.
- Is SwingVantage suitable for junior tennis players?
- Absolutely. SwingVantage scales benchmarks by skill level (beginner through elite) and age group. Parents and coaches can use it alongside in-person coaching.
Start improving your game today
Free. No subscription required. Cancel anytime.
Analyze My Tennis Swing FreeProof, not just claims
Here's a worked Tennisexample on sample data — the same shape your real report takes. We show the evidence, the confidence, and what we honestly can't know.
Example diagnosis
Late contact point: the hitting arm is beside or behind the front hip at contact rather than out in front — a preparation-and-timing issue, not a grip problem.
Top fix: Prepare the unit turn earlier and meet the ball out in front of the lead hip, extending the arm through contact instead of pushing at the ball beside the body.
What SwingVantage uses
- On the side view, the racket is still preparing when the ball is already arriving (late unit turn)Estimated
- Contact appears beside/behind the hip line rather than roughly an arm-length in frontInferred
- A short, blocked finish suggests the arm never extended through the contact zoneInferred
What it can't know
- Exact racket-head speed or spin without a sensor/radar
- Whether footwork or ball-reading is part of the lateness (needs live, multi-angle looks)
- Anything about wrist, elbow, or shoulder health — stop if you feel pain
How you'll measure progress
On day 7, re-film 10–15 forehands from the same side-view angle and distance. Freeze at contact: is the racket out in front of the lead hip now, with the arm extended? Re-record every 1–2 weeks to track the trend, not a single ball.
Coach summary
Player contacts the forehand late, beside the body, producing pushed strokes with no pace. Priority: earlier unit turn and contact out front with extension. Drills assigned: toss-and-hit contact point, shadow extension, early-preparation bounce-call. Retest in 7 days from a fixed side angle.
What do the confidence labels mean?
Illustrative example
Sample data, not your swing — used on demos and the sample reports so you can see the format before you start.
Heuristic estimate
A smart, data-backed read from limited input (a self-report or a single video). It is honest about being an estimate, and it sharpens every time you add a swing.
Measured
Values actually computed from your swing video or imported launch/sensor data are labelled as measured — not estimated.
We always show you which one you are looking at, and never present an estimate as a measurement.
Your swing, decoded — coaching in your pocket. SwingVantage reads your data and hands you the one fix that matters most, with confident, data-backed guidance you can use today. Findings are heuristic estimates — smart reads that sharpen with every swing you add — and they pair perfectly with a coach for injury concerns or advanced technique work, so you show up to those sessions already ahead.
Your data stays yours
- Sign in and your data is saved to your own private account and synced across your devices; without an account it stays on your device. Either way it is yours alone.
- Swing videos are analyzed in your browser and are not shared publicly by default.
- You can export everything SwingVantage knows about you at any time.
- You can delete any record — or everything — instantly from Settings.
Guides for your game
- Tennis Forehand Analysis: Fix the Most Common FaultsA reliable forehand comes from a unit turn, a relaxed low-to-high swing path, and contact out front. Diagnose your fault and groove it with simple drills.
- Tennis Backhand Basics: Build a Reliable StrokeA reliable backhand starts with an early turn, a stable base, and a low-to-high path. Here is how to diagnose your backhand and three drills to groove it.
- How to Hit a Topspin Forehand (Low-to-High Made Simple)Topspin comes from a relaxed low-to-high swing that brushes up the back of the ball, not a wrist roll. How to set the grip, path, and contact point.
- Tennis Grips Explained: Forehand, Backhand & ServeA plain-English guide to the main tennis grips — continental, eastern, semi-western, western — and which to use for the forehand, backhand, serve, and volley.
- Tennis Serve Technique: Build a Reliable, Powerful ServeA reliable tennis serve comes from a loose arm, a consistent toss, and an up-and-out swing into the court — not muscling it. How to groove it.
- How to Hit a Tennis Volley (Punch, Don’t Swing)A clean tennis volley is a short punch with a firm wrist and a continental grip — not a swing. Here is how to diagnose and groove compact, controlled volleys.