Golf is meant to be felt, walked, and played—not filmed on a tripod and manually logged between every shot. With PocketCaddie, you tap Start, put your phone in your front pocket, and play golf.
Before PocketCaddie, golfers wanting to improve had to choose between range tripods, manual phone tapping, or expensive launch monitor boxes.
Systems like GolfTEC or optical studio bays deliver strong joint data, and we are honest about that. If you want a $15,000 studio bay or want to film yourself in slow motion, use them. Most golfers don’t. Setting up a tripod on a crowded range is awkward, high-friction, and requires technical analysis. Worst of all, video dies on the 1st tee—you cannot film yourself on all 18 holes during a real round.
Traditional course apps turn golfers into data-entry clerks—pulling their phone out of their pocket before and after every shot to tap clubs and mark spots instead of staying in the round.
Legacy launch monitors cost hundreds or thousands of dollars because they pack screens, processors, and large batteries into a box—charging golfers a second time for computing and display hardware they already wear on their wrist and carry in their pocket.
Every score, drill, course contour, and caddie note in PocketCaddie is governed by five non-negotiable principles.
All of our coaching, scores, and feedback are grounded in real physical data. We name only what our sensors actually measure, and we never invent a metric we cannot see.
We validate our hardware and algorithms against ground truth—from 240 fps multi-angle capture and launch monitors in our test rig to GolfTEC OptiMotion benchmarks.
Accurate data, noisy data, sensor limitations, good swings, or bad swings—we are always transparent with the golfer. When a reading is experimental or a model, we label it clearly.
We honor every partner, coach, range, and creator agreement transparently, and we build products that genuinely help golfers improve.
Golf is a game. We want you to see your progress, keep coming back, and have fun doing it—taking it as seriously as you want, on your own terms.
PocketCaddie was founded by Nathan Shapiro—a former competitive three-sport athlete and All-State 100m sprinter with a technical background—to build sports technology that disappears into your pocket so you can focus on playing.
1. Starting with the No-Video Swing Engine: PocketCaddie began with a single technical question: can the motion sensors already inside a golfer’s front pocket, smartwatch, and earbuds capture the biomechanics of a golf swing without setting up a camera or tripod? Building and validating that patent-pending multi-sensor engine against 240 fps optical capture and launch monitors became our foundation.
2. Mastering the Driving Range: That engine turned a phone in your front pocket into a complete driving range assistant—automatically detecting real swings with zero taps between shots, grading up to 17 skills across six categories into a 0–100 session Swing Score, generating Session Wrapped recaps, powering Virtual Club Fitting and an AI Caddie from your recorded history, and pairing every skill with 48 3D biomechanical drills.
3. Becoming a Complete Golf Platform: From the range, PocketCaddie expanded to the course and the wider golf network—mapping 6,300+ US courses and 2,200+ driving ranges in 1-meter 3D LiDAR for Live Round and Range View, connecting students and teaching pros through the Coach Portal, and developing Pocket Radar 1 (PR1), our $100 screenless launch monitor keystone.
One of our 3 home pages: post-session notes and AI Caddie chat grounded in your recorded swings.
Open product page →7-slide Fitting Lab reveal & full Driver/Iron spec sheet derived from 100+ real range swings.
Open product page →48 3D x-ray drills across all 17 skills, with step stops, fault ghosts, and muscle activation.
Open product page →6,300+ LiDAR 3D courses and 2,200+ driving ranges with Plays-like elevation and 18-hole flyovers.
Open product page →Spin your Apple Watch hand path 360° in 3D on a stature-calibrated golfer at 1×, ½×, or ¼× speed.
Open product page →Phone, Watch, and AirPods motion sensing. 0–100 session Swing Score, 17 skills, and Wrapped.
Open product page →The $100 screenless launch monitor keystone. Your watch is the screen. Your pocket is the brain.
Open product page →