• Includes 1-Year Membership to TheStack App
  • Now on iOS, Android (Beta), and Chrome Web (Beta)
• 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
• Membership includes Bundled access to Stack Putting (iOS), Stack Wedging (iOS), and the Learning Library (All Platforms)
• 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
  

 

• 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 below.
  

 

For all kids 10-14, we recommend TheStack Junior.  For kids 15+, use the fitting chart below, because we factor in their current driver length into the recommendation: 

	Current Driver Length
Age	< 43"	≥ 44"
10	Stack Junior	Stack Junior
11	Stack Junior	Stack Junior
12	Stack Junior	Stack Junior
13	Stack Junior	Stack Junior
14	Stack Junior	Stack Junior
15	Stack Junior	Stack Adult
16	Stack Junior	Stack Adult
17+	Stack Adult	Stack Adult

 

If your child is under 13 years old, they must train as a Local Golfer under their parent or guardians profile in TheStack App.

• Stack training requires a speed device that can measure swings without ball contact. This bundle includes our own Stack Radar. View all compatible devices below

Compatible Devices

 

 *Other speed tracking devices may be capable of non-impact swings and can be used with TheStack App. We will continue to test new devices and keep this list current.

Disclosure: We may earn commission on some of the links below.

 

• 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) 
  

 

Platform Availability

 iOS: Access TheStack App from the App Store when your order arrives. Requires iOS 15.0 or newer. Access Speed, Wedging, Putting, and the Learning Library. 

Android & Web (Beta): Install TheStack App from the Google Play Store or access it on Chrome Web when your order arrives. Access Speed + Learning Library today; Wedging + Putting coming in a future update.