CoSwing

AI that understands your tennis.

Turn your tennis videos into coach-level insights — in minutes.

See features

Sample report

Forehand swing · Keyframe preview

Report

Keyframes8 frames

Issue regions4 areas

Training tips6 items

Focus: Contact point is slightly late. Try earlier hip rotation and a firmer follow-through.

Drag or click to upload a video

Supports MP4 and MOV

Upload video

Features

Core capabilities aligned with today’s workflow

Designed for short swing clips, with actionable diagnostics and training cues.

Frame-by-frame breakdown

Auto extract keyframes and label phases from preparation to follow-through.

Issue card annotation

Highlight the problem region with before/after frames for quick review.

Training tips and drills

Clear why/how guidance with ready-to-use exercise lists.

Supports forehand / backhand / serve

Analyze three swing types with tailored feedback.

Crop & trim controls

Keep only the effective swing window for sharper analysis.

More features

Want a feature? Send us your idea and we will prioritize it.

Join Discord to suggest

Cases

Players at every level can spot the right fixes

🎾

Forehand/Backhand stability

Diagnosed “late contact” and “hip-shoulder mismatch.” After four focused sessions, shots became more consistent.

🇸🇬Singapore · 3.5 level

⚡️

Serve rhythm correction

Keyframes revealed a high toss and early acceleration, leading to steadier first-serve results.

🇨🇳Shanghai · Youth team

🛡️

Injury prevention

Identified elbow over-rotation and lower-back compensation, then recommended safer drills and stretches.

🇨🇦Vancouver · Club player

Workflow

Three steps for a complete analysis

Upload swing video

Shoot from 45° behind, 15–20 seconds.

Auto frame sampling

Key issues marked with phase scoring.

Review drills

Get tips and a downloadable report.

Pricing

Three plans for different needs

Pay by analysis credits and scale when needed.

Free

Great for trials and individual projects.

✓ 3 analyses / month
✓ 10MB file size limit
✓ Max 15s video length
✓ Email support

Basic

🔥 Most Popular

Perfect for regular users and daily tasks.

$6/ month

✓ 100 analyses / month
✓ 15MB file size limit
✓ Max 30s video length
✓ Priority email support

Pro

Ideal for elite players and professional insights.

TBA

✓ Serve Speed Tracking
✓ NTRP Level Assessment
✓ Smart Auto-Highlights
✓ More coming soon...

FAQ

Common Questions

Is my video data private?

Yes. Your uploads are processed securely and are only visible to you. We do not share your training data.

Do I need special equipment?

No. Just use your smartphone. Record from the back-right corner (45°) for the best results.

What shots can I analyze?

We currently support Forehand, Backhand, and Serve. More shot types are coming soon.