Meet Mully,
your personal AI golf coach.
Your question goes to OpenAI for Mully’s answer. No account or email needed.
Have a launch monitor export? Get a free diagnosis →
Golf tech got really good at numbers.
It forgot about coaching.
We logged thousands of range balls on a launch monitor, tracked every round, watched spin rates and attack angles fill up dashboards we didn’t know how to read. The numbers kept piling up. Our handicaps didn’t move.
What was missing wasn’t more data. It was someone to look at the data and say “here’s what’s actually going on, and here’s what to work on next.”
That’s the job a great club pro does in thirty seconds. OpenCaddie puts that pro in your pocket.
The AI swing apps are decent, but you’re measured against a pro’s mold and chasing an impossible goal. The general AI tools work only if you know how to feed them the right context. OpenCaddie is for the rest of us. It finds the weak spots and lays out a practice plan with the structure to actually follow it.
The coach inside OpenCaddie.
We built Mully so you'd get coaching, not another dashboard. It reads the shots you already capture, finds the one thing costing you the most strokes right now, and hands you a real drill to fix it.
- 1
Reads what you've got
Your launch monitor exports (TrackMan, SkyTrak, Foresight, GSPro, Garmin, Arccos), your rounds, and your bag with its target carries.
- 2
Finds the leak, names the cause
It checks your delivery numbers against the ball-flight laws and your stats against benchmarks for your handicap. A fat 7-iron is a low-point problem, not a distance problem.
- 3
Prescribes a drill by name
A named drill from a 60-drill catalog coaches actually use, tuned to your numbers. Towel-behind-the-ball, 7-iron, 165-yard target, three sets of ten.
- 4
Adapts to how it felt
Tell Mully it clicked, you struggled, or you want to repeat it, and the next day in your plan adjusts. The more you play, the sharper it gets.
Mully's instruction is grounded only in established authorities: TrackMan ball-flight data, Mark Broadie's strokes-gained research, and shot databases from Arccos and Shot Scope. PGA-level and evidence-based. See where Mully's advice comes from →
A drill for every miss.
Mully pulls from a 60-drill catalog coaches actually use, matched to what your numbers say you need. A slice of it:
The 5-Drill Range Routine
30 minutes. Real coaching structure. Named drills, defined targets, and one written rationale per drill. Use it next time you practice - no app required.
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Sharing with a friend? opencaddie.ai/range
Your data stays yours. Every shot, round, and plan lives in your account with row-level security. We don’t share it, aggregate it across users, or use it to train models.
Simple pricing.
Free is enough to try the product end-to-end. Pro unlocks unlimited AI coaching, PDF plans, and zero caps on imports.
Try Pro for $1 your first month.
Then $14.99/mo. Cancel anytime from Settings → Billing.
Enough to try the full product.
- 4 launch-monitor session imports / month
- 2 on-course rounds / month
- 1 AI practice plan / month
- The full drill catalog
- SwingLab + Analytics + Strokes Gained
Unlimited AI coaching, no import caps.
- Unlimited launch-monitor + round imports
- Unlimited AI plan + warmup regenerations
- PDF practice plan export
- Switch between full practice sessions and pre-round warm-up drills
- Coming soon: direct GHIN + Arccos sync for on-course data
- Everything in Free