THE STACK SYSTEM

TheStack | Speed Trainer | Award Winning App

TheStack Hardware

5 milled Stack weights enable 30 weight combinations between 0g and 300g
Dual-purpose weight case / phone stand
Highly engineered training club – Adult (41.5″) or Junior (38.5″) version (see Fitting Juniors)
Stack training requires a speed device that can measure swings without ball impact. We recommend bundling with Stack Radar (Bluetooth connectivity). View all compatible devices here.

TheStack App Training

Rated 4.9 with 5,000+ Reviews on App Store

Adaptive speed training formulated by Dr. Sasho MacKenzie
Guided workout timer for reps, sets, and rest intervals
Custom speed metrics to track your gains
Bluetooth Connectivity to integration devices. Hands-free data entry using voice entry technology for non-integrated devices
Train and track up to twenty local (i.e. family) users under one login. App works with Family Sharing so the entire family can train easily on separate devices
Connect to any other Stacker using Share Codes

Access TheStack App from the App Store when your order arrives. Requires iOS 15.0 or newer.

See our FAQ pages for questions about membership access.

Stack Wedging is Now Live!

With the launch of Stack Wedging, we bring you a science-based approach to improving your distance control from 140 yards and in, automatically adjusting to your skill level to give you the perfect challenge and maximize the effectiveness of your practice sessions.

After TheStack App gets to know you with an initial Baseline session, get ready for personalized, gamified wedge practice.

TheStack App will call out target distances and score your performance in real-time.

*Stack Radar is required.

PREMIER MODE

Fully-guided wedge practice

After you complete your Baseline session, Premier Mode generates dynamic practice sessions based on your unique skill level.

Our proprietary Stack Points scoring system is mapped from Strokes Gained data. The average PGA Tour player would be expected to score 200 Stack Points at any target distance.

See how your wedges Stack up with 100 increasingly difficult challenge levels and dozens of valuable insights to help you start wedging it closer.

CREATIVE MODE

Design your own challenge

Create your own wedge combines with customizable settings for clubs, targets, rounds, and more.

Take full control over your training – design sessions that match your needs and take your wedge game to the next level!

Use the Compete feature to challenge a friend in real-time, and see who’s wedge game is the best, once and for all.

Take full control over your training – design sessions that match your needs and take your wedge game to the next level!

Stack Radar

The Stack Radar is a great multi-purpose radar that Bluetooth connects directly to TheStack App for the most seamless training experience.

Our PGA and LPGA Tour players love TheStack radar for it’s portability, size, and ease of setup. Now you can use Stack Radar for both your Stack Speed Training and Stack Wedging.

Why We Made Stack Putting

3 UNIQUE MODES

15 MIN

TRAINING SESSIONS

1,500,000+

PUTTS TRACKED

HOW IT WORKS

MEASURE STROKES GAINED PUTTING

Stack putting enables you to measure your sessions by Strokes Gained Putting relative to your peer group, a tool previously reserved for Tour players only. Dedicated practice with Stack Putting can improve your putting and give you a major advantage over your peers.

UNDERSTAND YOUR TENDENCIES

Experience detailed, real-time insights about your putting tendencies based on slope and break – positioning you to correct tendencies that would otherwise go unnoticed.

Real Stackers. Real Results.

TheStack App is currently available on iOS and requires using a device that is compatible with iOS/iPadOS 15.0 or later.

Android users – We encourage you to join our waitlist here.