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50100150you · 190 yd out

Golf intelligence for GSPro

One shot.
Fifty things
you didn't see.

Birzo reads the invisible game under every shot on your sim — and finds strokes inside the swing you already have. Scroll.

Browse the founder's real account→

the real app, months of data accumulated

One shot · 190 to the pin

Your stock draw. Flushed.

Plenty of height, starting on your line, curving in — coming down right at the green. Exactly the shot you pictured.

It kept curving.
Then it kept going.

The wind rode your spin — the curve accelerated. The green is firm and falls away — it released. 17 left, 16 long. Nothing wrong with the swing.

Fifty things
shaped that shot.

Standing over the ball, you can hold maybe three.

Two things you didn't account for when you picked target and club.

Neither needed a better swing. Both needed a better pick.

The third thing? You.

Not the shot you remember — the shot you're likely to hit.

Over the ball, your brain remembers the best shot you've ever hit with that club. Birzo remembers all of them.

Further right.
One club less.

You read the wind — not the wind riding your draw spin. The curve accelerated. Land it short of the flag and the hill brings it home. Same swing.

Pin-high.

Same swing. Same bounce. A different pick — that's where the strokes were hiding.

You just keep playing.
It keeps learning.

Play GSPro exactly as you do today. Every session sharpens the read on your game — what to practice, which club to pull, how to play the next round. The more you play, the more intelligence in your corner.

You're one of the first.

Free in beta, and the free tier is forever. Five-minute setup, then all you do is play — your data shapes what Birzo becomes.

By joining, you agree to receive texts from Birzo about your beta access. Standard message and data rates may apply. See our Privacy Policy.

Not ready? Browse the founder's real account first →

What's in your corner

A team behind you — packed into an app. The pros carry a caddie, a stats team, and a strategist. Yours is built from every shot you hit.

01 · The goldmine

Playing GSPro with Birzo builds deeper data than a tour pro gets from tournament golf.

That sounds like a stretch — it isn't. On tour, cameras and lasers track where each ball finishes, with launch numbers on a handful of shots. Your sim sees the entire life of every shot, end to end:

  • The swing and the strike — the full launch-monitor layer — club, face, path, ball.
  • The world around it — wind, lie, slope, elevation, the course itself.
  • Everything after it lands — every bounce and roll, and the physics that made them — a broadcast never sees that.
  • 400+ fields worth of data — across your shots, sessions, and rounds — a scorecard keeps ten.
  • And without Birzo, almost none of it gets banked — a score and a handful of stats survive — the rest of your most valuable golfing resource is dropped as you play.
ball_speedback_spinside_spinspin_axislaunch_vlacarry_distancetotal_distancepeak_heightdescent_angleofflineflight_time_sFairwayGIRclub_speedsmash_factorclub_pathface_to_targetangle_of_attackdynamic_loftclosure_ratespeed_at_impactYardssurface_liedistance_to_pinpin_elevationslope_lateral_degbounce_forcematerial_hitending_surfacewater_hitHoleParPenaltieswind_speedwind_directionwind_cross_mphelevationpin_gradient_degselected_clubuser_shot_typeintent_tagis_gimmemishit_typesg_categoryPuttsscore_to_parsg_totaltee_setholes_playedScoreTotalsession_kindshot_countdurationcourse_keyslope_ratinggreen_speedhandicap_indexclub_lofthandednessHandicapBALL FLIGHTCLUB DELIVERYCOURSE + LIECONDITIONSINTENT + TAGSYOUR ROUNDS + HOLESYOUR SESSIONSCOURSESYOUR BAG + YOUone shot
one swing, exploded into everything the sim saw · the full estate → 400+ fields across rounds, sessions, courses, clubs, and you · the ringed ten are all a scorecard keeps

The catch

Raw, it's a mountain no golfer would climb.

Uncataloged, it's unusable — and a chatbot will still happily “analyze” it into confident answers with no statistical footing. The overconfidence is the trap.

02 · The machine

Birzo does what no golfer would.

  • Banks every shot as you play — cataloged the moment it lands — rounds, practice, every club, every lie.
  • Cleans it until it's analyzable — months of grunt work, done for you: bad reads caught, gaps closed, junk thrown out.
  • Understands your golf — intent inferred — the club you pulled, the shot you were trying to hit — and each club's signature learned.
  • Checks it like a statistician — benchmarked against scratch, tour, or your level; nothing's real until it survives the fluke test.
  • Hands you the golf — findings priced in strokes: where you're leaking, where practice pays. The instruction stays yours.
Read the founder's live report→

13 confirmed · 1 strong signal · 1 forming · 3 on the horizon — 18 findings tracked

read from 2,974 shots across 34 rounds

Imagine what it finds with three years of your data.

the founder's live report sample

Your game in one look

Who you are as a golfer, and your whole game priced vs your level — disaster swings (a full stroke gone in one swing) the biggest closable

deepens your approach story

Severe curves are the hidden engine of your 150–200-yard approach leak

−0.98 strokes gained per round

across 125 shots · chance it's a fluke: about 1 in 26 million

deepens your approach story

Your biggest approach cleanup is the severe-curve tail, led by hooks and snap-hooks.

−0.86 strokes gained per round

across 85 shots · chance it's a fluke: about 1 in 10,000

deepens your tee-ball story

Skied tee strikes are a quieter scorecard leak than the slice, but they are still costing you.

−0.27 strokes to par

across 56 shots · chance it's a fluke: about 1 in 25

deepens your approach story

Headwind looks like a secondary multiplier on your 150–200-yard approach leak.

−0.16 strokes gained per round

across 38 shots · chance it's a fluke: about 1 in 160

deepens your approach story

Your 150–200-yard approach spread is transferring from practice to rounds almost unchanged

0.09 dispersion

across 919 shots · chance it's a fluke: about 1 in 2.4

That's 5 of 18 tracked findings

The full report carries all 13 confirmed — plus a strong signal, a forming read, and three on the horizon.

Keep reading the full report→

live · read-only · no sign-up needed

The big picture

your whole game, priced — before the findings underneath it

Off the tee

You favor driver and a fade, but both speed and shot spread trail your level. The right miss is the dominant danger.

Approach

Your iron and wedge speed is generally ahead of your level, but your approaches finish too short and too scattered in depth to turn that into enough greens.

Short game

You save more holes than your level would from every lie, despite an uneven strike picture. Sand still produces the most expensive failures.

Putting

You're a dangerous midrange maker and avoid three-putts better than your level. Pace, rather than line, drives most of the misses that remain.

← closable strokesyour levelstrokes ahead →
Confirmed— held up under every checkdeepens your approach story

Severe curves are the hidden engine of your 150–200-yard approach leak

−0.98 strokes gained per round

125 shots · vs other 150–200-yard approach shapes

The band is not uniformly weak: the severe-curve tail appears on about one in six shots and costs roughly a stroke a round. Without that tail, your 150–200-yard approaches play nearly a stroke a round better, making curve control the clearest layer beneath the headline gap; the especially wide right-curving misses show where the largest individual damage sits.

Strokes available without severe curves−0.98
Share of shots in the severe-curve tail17%
Strokes available without the slice tail−0.35

the leak, its share, and what comes back without it

Worth knowing: Curve size alone does not show whether the worst shots started off line or double-crossed, so the practice target is shrinking the severe tail—not forcing every shot into one shape.

What to do with it: Prioritize the severe-curve tail within this distance band before treating every 150–200-yard approach as equally broken.

The precise claim

Severe-curve approaches from 150–200 yards cost 1.52 strokes per round; replacing them with this golfer's other shots in the same band would recover 0.98 strokes per round.

Looking at: round approaches from 150–200 yards with a slice, big slice, hook or snap-hook (spin-axis magnitude at least 10°)

How sure are we?

Found by sweeping your game for segments that stand apart from your own baseline, priced against other 150–200-yard approach shapes and the pattern held in every re-check; the odds it's random noise are about 1 in 26 million.

The raw numbers

Shots analyzed125
Chance it's a flukeabout 1 in 26 million (p = 3.85037113304065e-8)
Held up in re-checks100%
Measured instrokes gained, per shot
Confirmed— held up under every checkdeepens your approach story

Your biggest approach cleanup is the severe-curve tail, led by hooks and snap-hooks.

−0.86 strokes gained per round

85 shots · vs all approaches

Hooks and snap-hooks made up 10.81% of your approaches and cost 1.05 strokes per round. Removing that tail would recover 0.61 strokes per round. Slice and big-slice approaches cost 0.71 strokes per round, with 0.48 strokes per round available by removing that tail. So the priority is the damaging curve misses—especially the hook-family tail—not every shot that curves left.

Hook and snap-hook−0.61
Slice and big slice−0.48
Current mix−0.17

recoverable strokes per round if each severe-curve tail were removed

Worth knowing: Curve alone does not show where the ball started—a pull-hook and a shot that starts right then hooks left need different fixes.

What to do with it: Prioritize reducing severe curve misses, starting with hooks and snap-hooks; use both start line and curve to diagnose them rather than treating every left-curving shot as the same problem.

The precise claim

Hook- and snap-hook approaches cost 1.05 strokes per round.

Looking at: Approach shots with hook or snap-hook curve classes; hooks carry 10–20° of left-curving spin axis for this golfer and snap-hooks at least 20°.

How sure are we?

Found by sweeping your game for segments that stand apart from your own baseline, priced against all approaches and the pattern held in every re-check; the odds it's random noise are about 1 in 10,000.

The raw numbers

Shots analyzed85
Chance it's a flukeabout 1 in 10,000 (p = 9.93154228718929e-5)
Held up in re-checks100%
Measured instrokes gained, per shot
Confirmed— held up under every checkdeepens your tee-ball story

Skied tee strikes are a quieter scorecard leak than the slice, but they are still costing you.

−0.27 strokes to par

56 shots · vs your holes with other tee strikes

A pop-up here means a skied strike — launched much higher than your normal tee ball with energy lost. It appears on about one in seven tee shots, and those holes play roughly a quarter-stroke worse than holes with your other strikes. If those swings performed like the rest of your tee-strike mix, about a quarter of a stroke per round comes back. It ranks behind the slice family because the total prize is smaller, but it is a distinct strike-quality target rather than another curve problem.

off-tee pop-ups−0.27
off tee popup reclaim per round−0.27
share of all tee shots14%

Worth knowing: Hole scores include everything after the tee shot, so some of the quarter-stroke gap may come from the holes or recovery shots rather than the pop-up alone.

What to do with it: Keep this behind the slice family in priority, but ahead of low-cost cosmetic misses.

The precise claim

Holes with a pop-up tee strike play 0.27 strokes worse to par than holes with your other tee strikes.

Looking at: Off-tee shots classed as pop-ups: skied strikes launched far higher than this golfer's norm with energy lost and smash below the flush band.

How sure are we?

Found by sweeping your game for segments that stand apart from your own baseline, priced against your holes with other tee strikes and the pattern held in every re-check; the odds it's random noise are about 1 in 25.

The raw numbers

Shots analyzed56
Chance it's a flukeabout 1 in 25 (p = 0.0398974301405162)
Held up in re-checks100%
Measured instrokes to par, per hole
Confirmed— held up under every checkdeepens your approach story

Headwind looks like a secondary multiplier on your 150–200-yard approach leak.

−0.16 strokes gained per round

38 shots · vs your other 150–200-yard approaches

The signal is smaller than the severe-curve story, but approaches in your key 150–200-yard band are worse when the wind is in your face. They make up only a small slice of the sample and appear to cost around a sixth of a stroke per round beyond the rest of that band, so this is a lead to watch rather than a planning anchor. Crosswind and downwind were checked separately; neither produced the same broad headwind pattern, and the miss direction is not yet stable enough to call under- or over-compensation.

150–200-yard approaches into the wind−0.16
share of all measured approaches in the reference cut5%

Worth knowing: The score cost does not yet show whether headwinds are sending you short, long, left, or right, so it cannot tell you which adjustment to make.

What to do with it: Track more headwind approaches before moving this above the severe-curve approach priority.

The precise claim

Into-wind approaches in the 150–200-yard band would return 0.16 strokes per round if they performed like your other shots in that band.

Looking at: Approach shots from the 150–200-yard priority band played into light, moderate or strong headwind, compared with the golfer's other approaches in that band.

How sure are we?

Found by sweeping your game for segments that stand apart from your own baseline, priced against your other 150–200-yard approaches and the pattern held in every re-check; the odds it's random noise are about 1 in 160.

The raw numbers

Shots analyzed38
Chance it's a flukeabout 1 in 160 (p = 0.00643284040697667)
Held up in re-checks100%
Measured instrokes gained, per shot
On the horizon— real leads — more data needed before we can call themdeepens your approach story

Your 150–200-yard approach spread is transferring from practice to rounds almost unchanged

Early — not settled yet

919

shots so far

42%

odds this is just noise

Read it as a heads-up, not a swing change.

0.09 dispersion

919 shots · vs targeted-practice mean absolute offline

This is not a course-only breakdown: round dispersion is only slightly different from the same distance band in practice, and the severe right-curve shape appears in both places. That makes the practice pattern useful evidence of the on-course miss, while the unreliable club mix means the distance band—not a named club—is the sound level to track.

Mean offline, round versus practice1.09
Offline spread, round versus practice0.95
Spin-axis spread, round versus practice0.9

round compared with targeted practice in the same distance band

What settles it: Round 150–200-yard approaches averaged 8.30 yards offline versus 7.62 yards in targeted practice, a 1.09× ratio.

How sure we are: Found by comparing situations your dashboard averages together. Real enough to track, not enough to call yet — the report will say when it firms up or fades.

That's 5 of 18 tracked findings

The full report carries all 13 confirmed — plus a strong signal, a forming read, and three on the horizon.

Keep reading the full report→

live · read-only · no sign-up needed

03 · Strokes gained

See where strokes hide.

Every shot measured against scratch, Tour, or your own handicap — your game sorted into where the strokes actually go.

Browse this live on the founder's account→

The Strokes Gained view on a phone

access your data from any device — iOS or web

The Strokes Gained view on the founder's real account — off the tee, dispersion drawn
The Strokes Gained view on a phone
04 · Practice, replayed

The range, replayed.

Every range session banked shot by shot — walk back into the replay, your tagged blocks, and each club's true numbers building while you work.

Browse his practice sessions→

A practice session on a phone

access your data from any device — iOS or web

A real practice session on the founder's account — the range replay and per-club numbers
A practice session on a phone
05 · Your bag, mapped

Every club's true window.

Each club's real carry and spread, laid down one fairway — the gaps show before they cost you.

See the live bag map→

The bag map on a phone

access your data from any device — iOS or web

The bag map on the founder's real account — practice scope
The bag map on a phone
06 · Swing camera — soon

Your swing, on tape.

Automatic recording coming soon.

How it works

Five minutes once. Automatic forever.

01

Play on your sim

GSPro, practice or rounds. Five-minute setup once — then Birzo lives in the background.

02

Every shot captured

All of it, automatically — every swing, every hole, every detail. A few taps of tagging when you want even sharper reads.

03

Your game, everywhere

iPhone and any browser, live during the session and after. Buddies tracked under their own names.

Free plan forever. Paid plans coming.

free · forever

  • Every shot captured automatically
  • Your real distances
  • Strokes gained — your pick of baseline
  • Live second screen during the session

pro

  • Trends across every session
  • AI insights
  • Cross-session intelligence

Your next session could be the first one banked.

Join the beta — free

Not ready? Browse the founder's real account first →

birzo

Every shot remembered. Every session measured.

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