Tell it your problem. Then just play.
Two sensors. Hands-free, real-time feedback on every rep — spoken to you as you train. No camera. No tripod.
Want the real reasons this works? Read the story →
Watch a real session with Bill — 2 min
Real result: a 50-year-old beginner went from 2-of-10 free throws to 12-of-13 in 42 days. No lessons.
Core tech awarded by Golf Digest · PGA Show
The System
Two sensors. Full-body insight.
Meet Bill
Expert feedback. In your ear. Every rep.
-
●
Convenient and conversational — Hands free, talks to you like a person.
-
●
Makes it so easy — Scrolls through the app for you. Connects sensors.
-
●
Unmatched experience — Real-time feedback on your specific problems and data, with helpful observations after every session.
-
●
Not a chatbot — Every word Bill says is driven by the sensors' real-time measurements of your body. The engine does the evaluating. Bill speaks it.
Why Practice Stops Working
Reps without real feedback are reps you can't trust.
You can't feel what's actually moving
Your body's sense of its own position lies to you — especially on the moves you're trying to fix. You think you're doing it right. You're not. And nothing tells you in the moment.
Your coach isn't there at 6am
The reps that matter — the thousands between lessons — happen alone. Without feedback, your body defaults to the old pattern. You're not training the new move. You're reinforcing the old one.
Video review is slow and vague
By the time you watch the footage, your nervous system has moved on. Late feedback is better than nothing — but fifty years of motor-learning research says the closer feedback happens to the rep, the faster you actually improve.
How It Works
Three steps. Then you just move.
Tell it your problem
Say it the way you'd say it to a friend: "I'm slicing." "My serve keeps going long." Not sure what's wrong? The free diagnostic finds the #1 thing holding you back.
Just say itSensors go where it matters
Bill tells you exactly where to place the two sensors for your problem — and connects them for you. Full-body motion-analysis insight, ready in seconds.
Attachment kit includedReal-time feedback on every rep
Speed, acceleration, peak angles — on your rep, compared to the pro. Auto rep detection. Session summary with rep-by-rep replay against the expert's good zone.
Live · no cameraThe Part That Changes Everything
The driving range. Your backyard at 6am.
Feedback on the rep you just took — right where you actually practice.
On the golf course
Hit the shot. Check your wrist angle on the takeaway — right there on the 7th hole. Know before the next tee whether you're back in the pattern your pro flagged last lesson. Export your rep data and send it to your pro before you even get to the parking lot. They show up to your next lesson prepared.
Anywhere else you practice
Driveway at 6am. Hotel gym on the road. Batting cage alone. Two sensors, earbuds in, every rep evaluated. No tripod. No camera angle to get right. No performance anxiety because someone's watching you film yourself. You practice like a normal person — and you get lab-quality feedback doing it.
The Science
The only thing we're loud about: it's tested.
The consensus isn't subtle: immediate, quantitative feedback on joint angles and velocity accelerates motor learning faster than almost any other training variable. Inertial sensors (IMUs) produce exactly that kind of feedback — the kind that used to require a lab. That's what the sensors deliver. Every rep.
That result comes from the accelerated learning system included with your subscription — the same method used quietly by Olympic and professional athletes for over a decade. The core technology won Golf Digest and PGA Show product awards. The full story is worth two minutes: The 10,000-hour rule is a lie (in sports) →
What's In It
The full stack.
-
✓
GOAT Sensor Set (2 sensors) — Precision IMU hardware. Placement guided by your diagnostic so two sensors give you full-body-analysis insight.
-
✓
Full Attachment Kit — Wrist straps, arm bands, leg bands, hip belt. Low-profile, purpose-built. Wherever your weakness lives, we've got the mount.
-
✓
Bill — The Voice in Your Ear — $40/month. Hands-free, real-time feedback spoken to you on every rep, driven by the sensor engine. Generous daily use that resets regularly, with fair-use limits — plenty for real practice for one person. Billed at checkout; your first month doesn't start until your sensors arrive.
-
✓
Every Expert. Every Sport. One Price. — Full access to the library of expert models across every sport — sign up for tennis, train baseball too; sign up for golf, port over to boxing. New experts added every month, all included (founding-period benefit).
-
✓
Accelerated Learning — Award winning, PhD-validated system proven to more than double the rate of results improvement. The core tech won Golf Digest and PGA Show product awards.
-
✓
Session History + Per-Rep Replay — Every session saved. Every rep replayable. Your angle trace vs. the expert's good zone, forever.
One subscription — $40/mo for Bill. Platform free your first year. And the app and sensors work even without Bill.
Our Guarantees
Three layers of protection. Zero risk on your end.
We built the best system we know how to build. We'll prove it.
Layer 1 — The 1-Year "Measurable Improvement" Guarantee
Commit to the proven plan for one full year:
- Two 15-minute sensor sessions per week
- Five 5-minute accelerated learning sessions per week
If your GOAT Evaluation hasn't improved after a year of that, we refund 100% of your sensor purchase and personally cover your first lesson with a GOAT-approved coach.
Layer 2 — 30-Day "Informed Decision" Guarantee (Unconditional)
Receive the sensors and use the full system for 30 days. If you don't think it's right for you — for any reason — send them back for a full no-questions refund. Your monthly subscription doesn't start until your sensors arrive and you activate the app, so you have time to experience the platform before the recurring charge begins.
Layer 3 — 1-Year Manufacturer's Warranty
Manufacturing defect within a year? We replace the sensors. Free. No paperwork, no hassle.
FAQ
Common questions.
What sports does this work for — and do I have to pick one?
Golf, baseball, softball, tennis, pickleball, basketball, volleyball, boxing, football, and soccer — plus strength movements like the squat, clean, jerk, snatch, and pull-up. New skills are added every month. And no — you don't have to pick one. Sign up for tennis and you still get full access to golf, baseball, and everything else. Every sport is included.
I have an iPhone. Can I still order?
Yes. The Android app is live now. iOS releases July 2026. Order today to lock founding pricing — you can activate the day iOS drops. Or if you want to start immediately, we can point you to a compatible Android device for under $199.
How hard is the setup?
If you can press an "On" button, Bill connects your sensors and tells you what to do. Most people go from opening the box to their first rep in minutes.
Can I cancel the monthly "Bill" subscription?
Yes, anytime — just contact us at goat@goatloop.com. You keep the sensors either way. You can still operate the app and sensors without Bill — you just lose the hands-free voice experience.
Not sure if it fits your sport?
Email us: goat@goatloop.com. We'll tell you straight. If it's a perfect fit, great. If it's not there yet, we'll tell you that too. Either way your purchase is covered by the 30-day guarantee.
Ready?
Tell it your problem. Then just play.
Two sensors. Bill in your ear. Hands free.
30-day unconditional guarantee · Ships in the U.S.