• Sign in with your Apple ID at  https://app.thestacksystem.com/
  
• 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.   

• From The App Store, download TheStack App (iOS) and login with your Apple ID.
  

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.

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.

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

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

• Login to http://app.thestacksystem.com using your Apple ID.
• Enter or paste your Subscription Number into the field.  Your Subscription Number is located on the e-mail we sent you titled "You have a new subscription".  It may take 24-48 hours for your account to be upgraded, so please try again the next day if your number does not work the first time.
• If you have not already, download and login to TheStack App (iOS)
• You're all set and ready to add players to your stable.

Once you've activated your account, follow these steps within TheStack App (iOS) to add players though our cloud sharing:

• Click on Your Profile button (top right)
• Click on the Address Book icon (top right)
• Click on the + icon (top right)
• Select ‘Student’s Code’ to add a non-local users
• Type in the Share Code.  This user is now added to your stable and you have access to their training data through your Address Book.

If you've added a Student but can't access their profile yet, it is because that student hasn't logged into the App yet since you've added them (if they are a brand new user).  In that case, first ask your player to login to their App.

Still having problems? Contact us here.

If you are going to start training on a shared Stack device (at a gym or as part of a golf team, for example) following these steps will enable you to (1) activate an account to train and (2) enable cloud sharing of your training with your Coach.  Your Coach must have purchased and activated a Coaches License to enable this functionality.

• Login using your Apple ID at https://app.thestacksystem.com/
• Follow the prompts to Generate a Sharecode
• Send that 6-digit Sharecode to your Coach, and ask them to add you
• Once your Coach has added you, download TheStack App at the App Store
• Login using your Apple ID
• Start training and sharing your progress with your Coach

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.