Inside the Engine
The Architecture of NAILED
We reject the industrial-era myth that there is only one “correct” way to swing a golf club. Every golfer possesses a unique, natural movement blueprint — from Jim Furyk's vertical loop to Dustin Johnson's bowed wrist. Our system discovers your swing DNA, matches you with the elite professionals who share your physical footprint, and optimises the mechanics you already have.
The Technology
RAG Architecture, Not AI Guesswork
Most “AI” apps let a generalised model look at an image and invent a convincing guess. That is unsuited to sports science — generalised models prioritise sounding right over being right.
Generalised LLM
- Creatively speculates about your swing from an image
- Prone to hallucinations — convincing but inaccurate
- No mathematical grounding in your real motion
NAILED RAG
- A purpose-built vision engine first reads the style of your swing — the angles, planes and timings that form your unique fingerprint
- Those measurements become a strict context payload
- The AI retrieves and maps real pro profiles — it cannot invent a match
Phase 1 · The Macro Filter
The 10 Style Archetypes
Your swing first finds its family. We read your motion as a whole — how you set up, turn, transition and release, not just one or two signature traits — and place you with the players who genuinely share your style. Our library of 100+ historical and modern professionals is organised into 10 holistic style families, so your match always starts from golfers who already move the way you do.
The Powerhouse
Short & Fast
Explosive, compact motion driven by rapid hand speed and aggressive body rotation.
The Metronome
Short & Smooth
Absolute control and mechanical precision with an abbreviated backswing and deliberate transition.
The Whip
Long & Fast
An expansive backswing arc combined with a high-tempo wrist release to maximise clubhead speed.
The Glider
Long & Smooth
A wide, fluid sweeping arc with effortless, synchronised timing rather than pure force.
The Turbine
Strong Grip, Heavy Rotation
An ultra-strong hand orientation paired with heavy core rotation through impact to kill the slice.
The Marksman
Neutral-to-Weak Grip, Held Fade
A traditional, weaker hand placement favouring high precision, upright postures and held ball flights.
The Tower
Tall & Upright
Standing exceptionally close to the ball, using a steep, single-plane or vertical swing path.
The Axis
Deep Waist Hinge, Flat Plane
A heavy bend from the hips at setup, producing a flatter, highly consistent swing plane.
The Minimalist
Compact & Low-Stress
Senior / limited mobility: a compact, low-stress framework that restricts turn while preserving rhythm.
The Classic
Lifted Heel, Free Rotation
Senior / limited mobility: a free-wheeling template using a lifted lead heel and loose arms to reclaim distance.
Example players shown for each family — illustrative only, not a full list of who's in our database.
Phase 2 · The Deep Dive
The Deterministic 11-Vector Engine
Once you're routed into your natural style family, the engine runs a deep-dive profile verification. Inside that bucket, your final Pro Twin selection is governed by a strict, reproducible model — not an AI generation.
NAILED tracks your movement across 11 critical biomechanical vectors captured at pivotal nodes: address, top of the backswing, shaft-parallel, impact and follow-through.
Peak Outliers: the engine finds the vectors where you deviate furthest from neutral and weights them heavily — so your match reflects your most defining movements, reproducibly, every time.
Illustrative profile — your real fingerprint is built from your own swing.
Phase 3 · Maximum Precision
The Signature Style Synthesis
A single swing video is a snapshot, and amateurs are prone to day-to-day inconsistencies. Signature Style requires a multi-angle profile of four swings, so the engine isolates your deeply ingrained habits rather than a one-off fluke.
2 × Down-the-Line
Captures your swing plane and path from behind — the geometry that drives your start line and curvature.
2 × Face-On
Captures weight transfer, tempo and release from the front — the rhythm and sequencing of your motion.
The RAG engine cross-examines both visual planes, factoring in your tagged club (an iron setup differs geometrically from a driver) to deliver a credible, 360-degree blueprint of your overarching golf identity.
The Objective Layer
The 18-Fundamentals Audit
Style matching tells you who you swing like. The Fundamentals Audit tells you how sound your swing is — objectively. Alongside the Pro-Twin match and the 11-vector profile, the engine runs a separate, repeatable audit of 18 swing fundamentals.
17 are assessed directly from your swing video, and a final Consistency fundamental is derived across your swings. Each is graded Fix, Tweak or Nailed — the same scale every time, so progress is measurable.
The backbone: these grades feed directly into your Swing Score and prioritise your personalised work-on plan — it isn't a separate report, it's how the app decides what to fix first.
- GripNailed
- Posture & SetupTweak
- Wrist Hinge & LagFix
- Weight TransferTweak
- TempoNailed
- ConsistencyTweak
Illustrative grades — your real audit is built from your own swing.
The So-What
From Data Architecture to Lower Scores
Your Pro Twin isn't a novelty badge — it's the key to your development. The moment your Swing Style is finalised, the entire app becomes a hyper-specific virtual coach that understands your body's true mechanical blueprint.
Context-Aware, Shot-by-Shot Feedback
Because the engine knows your archetype, it judges every new swing through that exact lens. An unconventional tilt or plane that a standard app would flag as an error is recognised as a core power source — so feedback calibrates your unique Tweakable Vectors instead of fighting your natural habits.
The First Tee Playbook
Data is useless if it causes paralysis over the ball. The engine strips away the jargon and delivers 1–3 concise, feel-based swing thoughts tailored to your Swing Style — so you play with a clear head and trust your natural DNA under pressure.
Realising Your True Potential
By identifying your baseline, filtering out the noise and delivering archetype-specific adjustments, NAILED doesn't change the way you swing — it optimises it. And your advice doesn't reset each session: the Swing Intelligence engine remembers what you're working on and only retires a fix once you've held it across rounds. That means deeper consistency, fewer wasted range sessions and a clear roadmap to your ceiling.
FAQ
How It Works — FAQ
The detail behind the engine, the matching, and what it means for your game.