See your swing.Know your next move.

One phone video. The moments that matter, a clear explanation, and a drill to take to the range.

Explore a complete report

First coaching report free with an account. No app to install.

Your AI golf coach

Demonstration swing

A clear view of what to work on.See what matters.

See the positions behind the advice. Your report connects the frames, the explanation, and the next drill.

Key moments. Clear coaching. One drill.

See how a report comes togetherExplore the sample report
Three key positions from one swing — address, top and impact — each with the spine, shoulder and hip lines drawn on and their angles printed beneath.
Address. Top. Impact. The same swing, with the body lines visible.

Film a swing. Get told what to fix.Film. See. Practise.

  1. Film a swing

    3–10 seconds

  2. See the key moments

    With coach notes

  3. Take one drill

    To the range

How the analysis works

Most golfers never get real feedback. You film your swing, watch it back, and still can't tell what's actually wrong. Lessons help, but they cost $80 an hour and you only take a few a year.

Pebble Swing does what a coach does with video. It finds the swing in your clip, pulls out the 24 frames that matter, and tells you what's going wrong, why, and what to practise. Every point refers to a frame you can see.

It finds your swing

It scans the clip for motion and finds where your swing starts and ends, even in a long video. This happens in your browser, in about a second.

It grabs the key frames

24 frames, mostly from the top of your backswing through impact, because that's where swings go wrong. Your tempo gets measured from the same scan.

It writes your report

Scores for each part of your swing, the ball flight it expects, your three biggest problems with the reason behind each one, and a practice plan for the next two weeks.

Aerial view of a links hole at dawn: sandy waste bunkers winding through mown turf, long shadows.
Dune bunkering from above

What you get back.

Everything in your report

Scores for every part of your swing

Setup, backswing, transition, impact, finish and tempo share one 0–100 coaching scale. 76–81 is the reference band for a solid club golfer. Your experience and the footage guide the read.

The shot your swing produces

The ball flight your positions point to, like a slice or a fat shot, and whether it matches the miss you told it about.

Your tempo, measured

How long your backswing and downswing take and the ratio between them. There's also a metronome you can set to your own tempo and use at the range.

Estimated speed and distance

Club speed, ball speed and carry, given as ranges you can compare from one swing to the next.

Your three biggest problems

What it sees, why it happens, the shot it causes, how to fix it, and a drill with sets and reps. Never a list of twenty things.

A two-week practice plan

A few sessions in order, each with a way to check it worked. You tick them off on your phone at the range.

Your history

Score trend over time, your best and average, how often you practise, and which problem keeps coming back.

Every swing is kept

The twenty-four frames and the report are saved with your account, so next month's swing is compared with this one and you can see what changed.

Read a full sample report

Rippled raked sand of a deep waste bunker at last light, a sliver of green and dune grass behind.
Raked sand at last light

Pay once. No subscription.Start with one free report.

No subscription. Analyses start at $3.99 for five.

Your first analysis is free with an account. After that you buy a pack and use it whenever you want. Packs never expire, and there's no monthly fee.

Create an account. No app to install.

Pay once. No subscription. Packs never expire.

View analysis packs

Starter

$3.99

5 analyses · 80¢ each

Enough to try it properly and see if a fix is working.

Standard Most popular

$9.99

20 analyses · 50¢ each

About one a week for a whole season.

Season

$24.99

100 analyses · 25¢ each

For people who practise a lot. Works out cheaper per swing.

For comparison: GolfFix is free to download, with an Advanced subscription at US$14.99 a month or US$99.99 a year on the US App Store, and its own Google Play data-safety declaration lists your video among the data the app collects. Here, $24.99 covers 100 analyses, you pay once. Checked August 2026.

Payments go through Stripe. If you're signed in when you buy, the pack works on all your devices. If not, it works in the browser you bought it in.

Refund policy · Terms of service · Privacy

Common questions.A few quick answers.

How much does it cost?

Your first coaching report is free with an account. After that, packs start at $3.99 for five analyses. No subscription.

How should I film?

Film one swing from the side or down the target line. Keep the phone steady and the whole club in frame. 3–10 seconds is enough.

How precise is it?

Body angles are approximate. Speed and distance are estimates, not launch-monitor readings. Clear, steady footage gives a better read.

More questions

How much does Pebble Swing cost?

Pebble Swing costs $3.99 for five swing analyses, $9.99 for twenty, or $24.99 for one hundred. There is no subscription and no monthly fee: you buy a bucket once, spend it whenever you play, and it never expires. Your first analysis is free once you make an account. Payments run through Stripe, and a failed analysis never costs a read, because the charge happens only after the coaching report comes back. The work your phone does on its own is free and needs no account at all: finding the swing inside your clip, cutting the twenty-four key frames, tracking your body and measuring your tempo all happen in the browser. Only the written coaching read, which calls an AI model, is metered. At $24.99 for a hundred reads a single analysis works out to twenty-five cents, and the pack is yours until you spend it.

How accurate are Pebble Swing's measurements?

Pebble Swing measures body angles from a single phone camera, so treat them as a coach's eye rather than a laboratory reading: shoulder, hip and spine angles can be off by five to ten degrees, and the page says so next to every number. Tempo is the most reliable figure, because it is timed from the motion in your own footage rather than inferred from a body model, and it is only reported when the downswing stands clearly apart from the rest of the swing. Club speed, ball speed and carry are labelled estimates and are zeroed out when the frames cannot support them; they are not launch monitor numbers and are not presented as any. Accuracy depends on your footage more than anything else: a steady phone, the whole swing in frame, and good light will move the numbers more than any setting in the app.

Do I need to download an app?

No. Pebble Swing runs in a web browser on any phone, tablet or computer, with nothing to install and no app store involved. Open the page, add a clip, and the analysis starts. On a phone the page offers a record button that opens the camera directly, so recording and analysing a swing is two taps. Because the frame extraction and the body tracking run in the browser itself, the device does the heavy work, which is also why the video has no reason to be uploaded. You can add the page to your home screen if you want it to behave like an installed app. An account is needed only for the written coaching report, which is what calls the AI model; the frame-by-frame breakdown, the body angles and the tempo measurement are free and work signed out.

What camera angle should I film my golf swing from?

Film from one of two angles: down the line, standing behind the ball on the target line with the camera aimed at your hands, or face on, square to your chest. Down the line shows swing plane, club path and early extension; face on shows weight shift, spine tilt and where the low point sits. Hold the phone at waist height, take three big steps back so the whole swing including the club stays in frame, and keep the phone still, ideally propped on a bag rather than held. Three to ten seconds of video is plenty, and one swing per clip is better than several. Landscape or portrait both work. Good light matters more than resolution: a bright range bay at 30 frames a second reads better than a dim one at 60.

What is a good golf swing tempo ratio?

Roughly three to one, though the number is softer than it is usually made to sound. It comes from John Novosel counting video frames for his 2004 book Tour Tempo, not from a laboratory. When Robert Grober at Yale later put accelerometers in the shaft and measured 43 golfers, the playing professionals came in between 2.5 and 3.5 to one, averaging near 3.0 — a band, not a constant. The surprise in that data is that ordinary golfers average close to 3.0 as well. What separates a professional is repeatability and raw speed, not the ratio itself. And where an amateur does measure low, the cause is usually a dragging downswing rather than a snatched backswing: the two high handicappers Grober measured both took longer going back than the tour player did. Pebble Swing times both halves off your own footage and gives you a metronome you can set to your measured tempo.

A golfer silhouetted at the top of the backswing at dusk, the last band of light on the sea horizon.

Try it on your next range session.Ready for your next swing?

Film one swing, three to ten seconds, phone held still. Your phone reads the positions before you sign in to anything, and the first coach's read is free.

One phone video. One place to start.

Analyse your swing.

Add one swing. In about forty seconds you get a score for every part of it, the miss it predicts, the three faults costing you most, and the drills to fix them.

  1. 1Video
  2. 2Camera
  3. 3Swing

1Your swing video

How to film

  • Tripod, or prop the phoneWaist height, and not held in a hand. A phone that moves hides the body’s movement.
  • Down the line shows the mostStand behind the ball on the target line, camera aimed at your hands. Face on is the second choice.
  • Three big steps back, in good lightThe whole swing and the club stay in frame, and you still fill half of it. One swing, three to ten seconds.

The full filming guide

Add a video to continue.

2Where the camera was

Camera placement

Tripod or a propped phone at waist height, three big steps back. Down the line shows the most.

Handedness

3About the swing

Optional. It goes to the coach with your frames.

Add a video first. The analysis takes about forty seconds.

A links green at first light: mist between pines, a single white flag, bunkers either side.
A links green at first light

Your frames and the report are kept with your account, so the next swing is compared to this one.

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Pebble Swing There is nothing to print yet. Analyse a swing first. The report prints as a document, frames and all.