Analyze one swing from one video
Film a swing or upload a clip. Grassy tracks your body on every frame, finds the key positions, and compares spine tilt, head sway, hip turn, and more with tour ranges.
AI golf coach
An AI golf coach that watches your swing and knows your game.
A coach does more than measure. Grassy turns one swing video into one clear fix with a drill, answers your questions about it in plain language, coaches from your own stats, and carries the advice onto the course as your caddie. The swing analyzer itself is detailed on the Swing Lab page.
Get the AI golf coach in GrassyTry the AI swing analyzer on the web →Compare AI swing analyzer apps →
Free to start with starter AI usage · Video-based, no sensors · Currently on iPhone, with web swing uploads · Live coaching on the waitlist
What the coach does
Six jobs, one coach
Most golf apps either measure a swing or track a score. Grassy connects the two, so the coaching is about your game rather than one clip.
Give you one fix and a drill
Instead of a report, the AI golf coach names the single change most likely to help and pairs it with a drill you can take to the range.
Talk it through
Grassy, the conversational coach, answers questions about the swing it just analyzed: what a number means, why it matters, and what to feel.
Coach from your stats, not just your swing
Grassy knows your scoring, driving, approach, and putting trends and your shot dispersion, so you can ask where strokes are going and what to practice.
Carry the coaching onto the course
The same app runs the AI caddie during an eligible Course GPS Beta round, with a shot plan built around your real misses and wind and elevation in the club it suggests.
Coach a team
Coaches and captains can see their players’ stats in one place and ask Team AI about any player on the roster, with each player choosing what to share.
Choose with clear eyes
Where Grassy fits, and where it does not.
Grassy is a strong fit when you want one clear thing to work on, a coach you can question, and coaching that carries onto the course. It is the wrong tool for a few jobs.
- It does not measure club speed, ball speed, or launch data. A launch monitor does that.
- It does not replace a PGA professional. It helps you understand and practice between lessons.
- Live, in-session voice coaching is not available yet; it is on a waitlist.
- The full app is currently on iPhone. Swing uploads work in a browser on any device.
Straight answers
Frequently asked questions
What is an AI golf coach?
An AI golf coach is software that analyzes your swing or your game and gives feedback the way a coach would. Grassy does both: it analyzes a swing video with body tracking and tour-range comparisons, gives one fix with a drill, and lets you ask Grassy questions about your swing and your stats.
How is Grassy different from a swing analyzer app that gives me numbers?
Grassy measures your positions too, but it leads with one clear fix and a drill, then lets you ask follow-up questions in plain language. It also connects the swing to your stats and to the AI caddie on the course, so the coaching is about your game, not one clip.
Is the Grassy AI golf coach free?
Grassy is free to download and use, and starter AI usage is included. Grassy Pro, Grassy Max, and credit top-ups add more AI usage for swing analysis and the AI caddie, shared across the iPhone app and Swing Lab on the web.
Can I use the AI golf coach without an iPhone?
Swing analysis is available through Swing Lab on the web, which works in a modern browser, so you can upload a swing from a computer or an Android phone. The full app, including the AI caddie, Course GPS Beta, and stats, is currently on iPhone with iOS 18.0 or later.
Does Grassy offer live AI coaching while I practice?
Not yet. Live, in-session swing coaching is on a waitlist. Today the coach works on recorded swings you film or upload, and on your stats.
Does an AI golf coach replace lessons with a PGA professional?
No. Grassy gives you fast, specific feedback between lessons and one priority to practice. A professional can see and feel things a video cannot, and Grassy is designed to make those lessons easier to act on.
What does Grassy need from me to coach well?
A clear swing video, filmed down the line or face on with your whole body in frame, and, for game coaching, a few rounds of stats. Slow motion or 60 fps and good light improve body tracking.
Start with one swing
Film a swing today. Get one fix, not a wall of data.
Download Grassy on iPhone or upload a clip to Swing Lab on the web. Starter AI usage is included, and Grassy Pro, Grassy Max, and credit top-ups add more.