• From The App Store, download TheStack App (iOS) and login with your Apple ID.
  
• Enter the Serial Number found on the threaded stem of your Stack hardware. 

*If you are having trouble at this step, provide your serial number to us and contact us here.

That’s it!  Fill out the Profile information, and follow the prompts in the App to do your Baseline Session and select a Program to get started.

First, you'll need to activate your account following these steps:

• Download and login to TheStack App (iOS)
• Follow the prompts to Activate Coaches License
• Key in your Subscription Number, which can be found on your order confirmation e-mail
  
• You're all set and ready to add players to your stable

If you already have a profile and have been using the App, log out of the App first, then follow these steps listed above.

Click Here to watch a comprehensive video overview for how to use your Coaches License

Still having problems? Contact us here.

There are 2 options to add family members who want to train with TheStack hardware.

Option 1: You can add a family member to train on their own iOS device, just as you are. To do that, simply have that family member download the App and activate the same serial number you did. This will in no way impact your training data, and we allow a serial number to be activated several times for this purpose.

https://www.thestacksystem.com/apps/help-center#hc-i-have-thestack-hardware-how-do-i-get-started-training

Option 2: You can add them as 'Local Golfers' - on your iOS device, under your Apple ID login. To do that, here are the steps:

1) Click Profile (top right corner)

2) Click the Address Book (top right corner)

3) Click the '+' (top right corner)

4) Click 'Add a Local Profile'

Your serial number is located on the threaded stem of your Stack hardware.

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: 

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

Yes, measuring your speed and dynamically adjusting your Stack Weights during your training is fundamental to The Stack System.  We work with a variety of options which you can read about here.

For now, TheStack App is only available on iOS, and requires using a device that is compatible with iOS/iPadOS 13.0 or later.  A complete list of options can be found here:

https://support.apple.com/en-us/HT210327

If you are anxious to get started now, you can use TheStack App on an iPad - the large display makes for a great training experience - or acquire an older iPhone. 

Lost a weight?  No problem, reach out to us on our contact page and let us know what you need.  We'll work out details with you to send a replacement.

Yes, you can change the grip on your Stack hardware without drastically changing the weight properties that are key to training - because the large weight changes are occurring at the distal end of the hardware.

Whether you are re-gripping it yourself or using a 3rd party repair shop, please ensure to take extra care as with any club not to over tighten or over-clamp the shaft during the re-gripping process, as over-clamping of the shaft can lead to damage.

We have seen the best success with placing the PRGR 2.5' - 3' behind the low point of your swing with TheStack as shown below.

The club setting you choose (i.e. W1, U3, etc.) should not matter for Stack speed measurements - this only factors into PRGR's distance and smash factor calculations during a ball impact.