Enjoy personalized speed training with TheStack, gamified wedge practice with Stack Wedging, Tour-caliber insights with Stack Putting, and 60+ instructional videos in the Learning Library - along with our Bluetooth-enabled Stack Radar, which sends your speed data directly to TheStack App for seamless training

Stack Radar is a great multi-purpose launch monitor that packs into your golf bag easily, making it perfect for speed training with TheStack, Stack Wedge practice on the range or indoors, and measuring your speeds on the course.

TheStack App - Speed Training, Wedging, and Putting

Rated 4.9 with over 5,500 Reviews on the App Store

Includes 1-Year Membership to TheStack App
- Now on iOS, Android, and Chrome Web
Fully customized and 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 the Stack Radar
TheStack App Speed Membership includes full access to all of the App features: Stack Wedging, Stack Putting, and the Learning Library
Train and track up to twenty local (i.e. family) users under one login. Compatible with Family Sharing so the entire family can train easily on separate devices

TheStack Hardware

5 milled Stack weights enable 30 weight combinations between 0g and 300g
Dual-purpose weight case / phone stand
Precisely engineered training club - Adult (41.5").  For Junior sizing, see Fitting Juniors
Stack training requires a speed device that can measure swings without ball contact. This bundle includes our own Stack Radar. View all compatible devices here.

Stack Radar

Measures Swing Speed and Ball Speed.  Calculates an estimated Carry Distance and Smash Factor. Can capture swing speed without ball contact
Powers Stack Wedging (iOS), our newest gamified practice feature. Enjoy Seriously Fun wedge practice indoors or outdoors and get accurate feedback regardless of range ball quality or practice environment conditions.
Pairs with TheStack App via Bluetooth to enable advanced features. Adjust for temperature and altitude while fine-tuning ball speed and launch angle for the most accurate feedback
Set speed trigger threshold at 25, 35, 45, or 55 mph to avoid false triggers from fast backswings
Includes a stylized carry case to protect the screen while stored (available exclusively for purchases from our website)

Access TheStack App from the App Store when your order arrives. Requires iOS 15.0 or newer. Android and Chrome Web will be live by Dec. 1 2025. Buy now, start training in early December.

• iOS: Full access today — Speed, Wedging, Putting, and the Learning Library.
• Android + Chrome Web: Speed + Learning Library today; Wedging + Putting coming in a future update.

See our FAQ pages for questions about membership access.