For professionals

A baseline that holds,
across the lessons you give.

Souverain Golf is a diagnostic and validation layer, not a replacement for your eye. It quantifies the player in front of you, holds that picture steady between sessions, and gives you both a shared reference you can read together. It runs on the launch monitor you already own.

Become a partner → See the app
Three ways it earns its place

One model, read three
different ways.

For coaches

Multiply your reach across a roster.

A force-multiplier between lessons: the drill library is yours to author, and the diagnosis routing extends your eye to every player you cannot watch every day. Prove the change you made, in numbers.

  • Author your own drills, deploy to the roster
  • Diagnosis routing that extends your reach
  • Coach view and a shareable PDF per session
For club fitters

Separate the swing from the club.

The model splits dispersion (the swing) from carry (the club and ball), so a fitting change is measured against a stable player, not noise. The bag and envelope data is fitting-relevant on its own.

  • Loft-aware replace and carry-forward
  • Per-club fitting cards, full specs
  • Import from any major launch monitor
For academies & programs

The development stack, institutionalised.

The natural home for junior and college development: a measured baseline per player, a structured journey, and evidence of progress a program can stand behind, on the hardware you already run.

  • A baseline and journey per player
  • Roster-wide, on your existing bays
  • Evidence of progress, not just feel
HOW IT FITS

It works the way
you already work.

No new hardware, no methodology to adopt, no client data to re-enter. It layers on top of your launch monitor and hands you a quantified version of what you already do by eye.

  • No hardware to buy. TrackMan, Foresight, Garmin, Rapsodo, and Mevo+ import by universal CSV, auto-detected and unit-converted.
  • A shared reference. You and the player read the same ellipse and the same numbers.
  • Honest by design. Diagnosis runs only on statistically certified blocks; it says "indicative" when it is not sure.
  • Your judgement leads. The model flags and quantifies. The prescription is still yours.
Coach view
Coach-view hand-over report: the shareable summary the coach and player read together (illustrative sample data)

Download a sample coach readout (PDF) →

Why it holds up to scrutiny

Statistics you can defend
to a sceptical pro.

5
Modelled parameters per club. Four carry a confidence interval; shape (ρ) is reported once it is stable.
2σ
Principal-axis ellipse fitted to the real shot pattern
SPRT
Sequential drift detection, corroborated before it flags
OSF
Method pre-registered, so the claims are checkable
Honest by design
Reliability figure: the model marks a read indicative until the sample is large enough, showing visible honesty to a sceptical pro (illustrative sample data)
Honest by design: a read stays indicative until the sample earns it, so nothing is over-claimed to a pro who will check.
Fitter · real or noise
A/B fitting comparison figure: separates a real carry gain from a difference still inside the noise band, each with its confidence interval (illustrative sample data)
The fitter's real-or-noise read: a carry gain is called real only once its confidence interval clears zero; a consistency difference inside the noise band is left “not callable.”
Download a sample fitter verdict (PDF) →
Gapping
Gapping figure: a measured carry ladder showing where clubs overlap or leave a gap, drawn from the player's own shots (illustrative sample data)
Bag gapping from the player's measured carries, not a tour average, so a fitting change is judged against a stable baseline.
COLLABORATE

We are looking for
founding partners.

We are taking on a small founding cohort: the first five coaches and three fitters. The formal study needs practitioners, and the product needs the kind of feedback only a working coach, fitter, or facility can give. If that is you, we would like to talk.

  • Early access to the professional tools, free during the beta.
  • A direct line to the team shaping the roadmap.
  • A role in the research, for those who want one.

"We read every application personally and respond within 48 hours." That includes yours.

Souverain Golf · founding partner programme