OpenSG
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OpenSG

Strokes Gained on every shot.

OpenSG tracks every shot by GPS and shows exactly where you gain and lose strokes — off the tee, approach, around the green, putting and penalties — measured against your handicap, scratch, or PGA Tour average. The stat the tours use, in your pocket.

Try OpenSG free Learn more

Free while we're in beta. Practice stays free; real-round tracking moves to a subscription later.

On any phone — iPhone or Android. No sensors, no hardware.

OpenSG Strokes-Gained breakdown by category on a phone
OpenSG in-round caddy — plays-like distance, suggested club, and live distances, wind and slope on a phone
For players

A caddy in your pocket

  • A "plays-like" distance and a suggested club on every shot — adjusted for slope, wind and altitude.
  • The app logs the round for you — GPS follows your ball; you just confirm at the hole with a tap.
  • See the five places you win and lose strokes — so a hot putter can't hide a cold approach.

Everything you need in a round

Every number you'd want over the ball — plus the tools to plan, practice and compete.

Read the green

Aim line and break for the putt, from crowd-built green contours.

Live weather

Wind and air density folded into every plays-like number.

Your dispersion

Your real shot spread drawn on the hole — not a generic guess.

Expected strokes

The expected score from any spot on the course.

Outcome odds

Pick a target and see where the ball lands — fairway, rough, water, OOB.

Yardage-book notes

Per-hole notes with aim lines and "don't-hit" markers.

Tournament mode

A Rules-legal view that hides the assistance competition doesn't allow.

Altitude calibration

Tune your whole bag for altitude and temperature before a trip or event.

Range-to-course rounds

Play a real course from the driving range or practice facility.

Plan from the couch

Study and strategize every hole before you tee off.

Skill drills

Putting, approach and in-play drills scored on Strokes Gained.

Visual shot editor

Fix every shot on the map — drag, add or reclub — after each hole or the whole round, with GPS breadcrumbs to recover shots you forgot to log.

Learn how it all works → Read the FAQ
OpenSG coach lineup cockpit — roster ranked by category Strokes Gained with a best-ball lineup optimizer A single player's deep-dive — both handicaps and per-category Strokes-Gained gauges for tee, approach, around the green and putting Assign practice — the roster ranked worst-first on a metric, with a one-tap drill scheduled to each player's phone
For coaches

See your whole team clearly

  • Your whole roster ranked at a glance — form, consistency, and who fits the course you're about to play.
  • A best-lineup optimizer with predicted scores for match day.
For coaches

Find every weak spot

  • Drill into any player for a full per-category breakdown — tee, approach, around the green, putting and penalties.
  • Both handicaps, fairways hit and range sessions in one view, so the leak jumps out at a glance.
For coaches

Assign the right drill

  • Schedule a drill to the players who need it — it lands on their home screen with a one-tap Start.
  • Off-course practice, so it never touches their handicap or Strokes Gained. Runs in any browser.
Request a team pilot →
Built for school golf

Minor-safe by design, with a Rules-legal mode for tournament rounds.

No hardware to buy

Just the phone in your pocket — iPhone or Android.

Every part of your game

Tee to green to putts, benchmarked to the level you choose.

Try OpenSG free today.

Start tracking your next round — or set up your team.

Try OpenSG free Log in

Free while we're in beta — we'd love your feedback.