Analyze every angle of your game.

Video in, report out. AngleMotion turns the footage you already have into a permanent, shareable record of a player’s development — measured, corrected by you, and kept for as long as they play.

Test it free for an hour Follow one player’s season

Sign in with Google and use every tool free for one hour — no card, no booking.

A forehand mid-swing with the AI-detected skeleton drawn over the player and a panel of ten joint angles beside it — elbows, knees, feet, shoulder and hip lines.

One player. One season. One file that keeps growing.

Every tool below exists because something in this timeline needed it. Scroll the season.

An illustrative timeline. The dates and readings are examples, not a real client’s record.

  1. MAR 04

    The stroke, measured.

    Elbows, knees, shoulder line, hip line — AngleMotion reads the joint angles off the frame and keeps every number in a data column beside the player. Draw your own angle arrows on top, compare two of them as a differential, and back every note with a real measurement instead of a guess.

    Two angle arrows drawn on a player’s shoulder and hip lines, with a data column listing both angles, their differential, and the elbow and knee angles.
  2. MAR 11

    Centimetres, not pixels.

    Calibrate once against something of known size — a racket, a net post, the service box — and the ruler measures real distance anywhere in the frame. Stance width, contact point, how far a knee travels: measured, not eyeballed.

    The ruler panel asking for a calibration reference: racket, net post, net width, service box, singles court or a custom distance.
    Pick a reference the clip already contains.
    The ruler calibrated against the racket at 68.6 cm, measuring 39.7 cm between the player’s knees.
    Calibrated on the racket: 39.7 cm, knee to knee.
  3. MAR 18

    The AI drafts. You decide.

    Every skeleton keypoint and every angle the AI detects is yours to move. Drag any point, correct any angle, trust the read. AI-fast for the 90%, coach-accurate for the 10% that matters — no black box you can’t touch.

    Trust the AI for speed. Trust yourself for the truth.

    The AI skeleton following a forehand from backswing to finish with live joint angles in the data column, then frozen frames with angle arrows drawn on the shoulder and hip lines.
  4. APR 09

    The whole stroke, at once.

    Motion Layer turns a swing into a multi-position composite — as a still and as video. You choose the frames and the layers, so the trail shows the path you want the player to see. The demo that sells your coaching and the shareable that markets it.

    Plus — it looks incredible.

  5. APR 27

    Phase by phase, in slow motion.

    Snapshot every phase of the stroke and replay it frame-by-frame in slow motion, side-by-side, with angle overlays. Then screen-record it with your webcam and mic to deliver a same-day coaching video your player can rewatch until it clicks.

    A paused contact point marked up by hand: a dashed ellipse at the hips and a 107° forearm-to-racket angle, logged in the data column.
  6. MAY 16

    The match, in numbers.

    Follow a player through a live match and log every point by hand, or let the Match Decoder read your SwingVision screenshots and derive the stats SwingVision doesn’t surface. Either way the match ends as data, not an impression.

    A decoded match report: shot and spin distribution charts, then a coach’s summary where every line names the numbers it rests on.
  7. JUN 02

    Two files that outlive the session.

    Every player carries two documents — technical analysis and match analysis — plus a player database and progress tracking across the whole season. Rivals hand you a clip and stop. This is the client file, the deliverable, and the storefront in one place.

    Every student’s technical story in one file — from first lesson to nationals.

    A player’s reports page: dated technique analyses, one with a YouTube link, and buttons that open the Technical Analysis Doc, the Match Analysis Doc and the Drive folder.
  8. JUN 21

    Published, linked, handed over.

    Push the finished video to your own YouTube channel as unlisted and save the link to the player’s report, which is a Google Doc. No AngleMotion storage limit: your videos live on your YouTube, your reports in your Google Drive. Unlisted means anyone with the link can watch, and Google’s own account limits still apply.

    Part of Pro and Academy: the player database, YouTube upload and Docs export.

    A finished coaching recording — the analysed clip with the coach on camera — and the actions that follow it: Connect YouTube, Crop, Trim and Download MP4.

From footage to a finished report, in six steps.

The whole loop, start to finish. No step needs a second app.

  1. 01

    Bring the video in

    Upload from your camera roll or pull from Google Drive. Nothing to install.

    The empty workspace with Upload Video, the tennis-court strategy board and the demo clip.
  2. 02

    Find the frame

    Step frame-by-frame to the moment that matters and snapshot it as a phase.

    Five frames marked along the clip’s timeline, each listed with its timestamp.
  3. 03

    Let the AI read it

    Run pose detection and AI Detect Angles, then correct any point the AI got wrong.

    The AI Track dialog offering three tracking speeds, from extremely precise to fastest.
  4. 04

    Build the composite

    Pick your frames and layers and generate the Motion Layer still or video.

    The Motion Layer mask editor with the player and racket detected automatically and highlighted, ready to cut from the background.
  5. 05

    Record the explanation

    Capture screen, webcam and mic in one hub while you talk the player through it.

    A recording in progress: the clip on screen, the coach in a floating camera window with a timer, Pause and Stop.
  6. 06

    Send the report

    Publish to YouTube, drop everything into the player’s document, and share the link.

    A coach’s summary of six numbered observations above a Save to Google Docs button.

Learn what to film, and what to look for.

AngleMotion Academy is a growing library of eBooks, guides and drill breakdowns that teach the craft behind the tool — how to set up a shot, which phase of a stroke actually explains a fault, and how to turn a reading into something a player can act on. Coaches use it to sharpen their eye. Players and parents use it to analyse themselves properly instead of guessing.

Included with every plan.

About Vin Baccelli, founder & coach.

AngleMotion was built by a working tennis coach to do the job he was already doing by hand. The reviews below are of Vin’s own coaching analysis — the practice the tool came out of.

Read all reviews on Trustpilot

All reviews on Trustpilot are 5 stars — for the app and Vin’s coaching analysis

Pricing that fits how you coach.

Light

For players and coaches who want to measure and mark up a stroke.

€10.75/mo

€129 billed yearly · Save 16.7%: two months free

  • Every drawing tool: lines, arrows, angles, shapes and text
  • Ruler, joint chain and angle differential
  • AI skeleton
  • AI Detect Angles, every reading yours to edit
  • Data column beside the player
  • One snapshot: the frame AI Detect Angles captures
  • Screenshots
  • AngleMotion Academy
Choose Light

Pro

For coaches running a coaching business.

€24.92/mo

€299 billed yearly · Save 28.6%

  • Everything in Light
  • Recording Hub: screen, webcam and mic
  • Motion Layer composites
  • YouTube upload
  • Player database, and saving to a player from the analysis screen
  • AI Track: precision skeleton tracking
  • Generate: phase captures and slow-motion replay
  • Multi-phase snapshots
  • Manual match analyzer and Match Decoder
  • Google Docs report export
  • Your public coach profile
Choose Pro

Academy

For academies and multi-coach teams.

€49.92/mo

€599 billed yearly · Save 28.6% · up to 4 coaches

  • Everything in Pro
  • Up to 4 coaches: you plus 3
  • One subscription, central billing
Choose Academy

Pro and Academy billed yearly include the Spin Mechanics ebook. Prices are final: no extra taxes at checkout.

Questions, answered.

A browser-based tennis video-analysis platform: AI skeleton + angle detection you can edit by hand, Motion Layer composites, slow-motion phase replays, a recording hub, and per-player Google Docs coaching reports — all in one place.

Start your first file today.

One hour of every tool, free. Bring a video you already have (or use our demo video) and see what comes out the other side.

Test it free for an hour

Used AngleMotion? Tell us what you think.

Trustpilot