The Stack System 4+

Longer drives and fewer putts

The Stack System, LP

Designed for iPhone

    • 4.9 • 4.1K Ratings
    • Free
    • Offers In-App Purchases

iPhone Screenshots


The Award-Winning App for golf enthusiasts is now even better. Stack your most important golf skills together and enjoy both longer drives AND fewer putts. Please note that TheStack App requires a training club purchase (includes 2 year subscription), or an in-app subscription purchase.

STACK PUTTING ($59/year) is like having a Tour putting coach in your pocket. Enjoy gamified putting practice with analytics and insights about your putting not available anywhere else. STACK SPEED TRAINING ($99/year) powers distance gains through customized, variable inertia speed training - the most efficient way for a golfer to increase their clubhead speed, and includes Stack Putting!


"Stack Putting is the best way I have seen to practice your putting and get proper feedback for corrections. I'm all in." -Ben Crane, 5-time PGA Tour Winner

Stop wasting time on the putting green and gamify your practice with focused 15-minute putting sessions you can do on any putting green. Data entry is a breeze with our Voice Entry and Pocket Modes. The App will guide you through 18 holes on the putting green and have you hit the putts that are going to matter the most to your score. Enjoy actionable insights about your putting statistics to identify your strengths and weaknesses through beautiful data visualization (shot chart, spider diagrams, bar charts). See how your putting stacks up against your peers by picking any handicap baseline for statistical comparison. Compare mode allows you to experiment with different putters or techniques and measure differences so you can make smarter decisions about your game. Enrich your insights and boost your data quality by first passing TheStack Putting Certification Quiz.

Creative mode allows you to create your own putting combine with an easy-to-use template, or enjoy popular predesigned practice combines. Creative mode is great for indoor putting greens or if you want to focus on a specific area of your putting. You can also share your own designs with your friends by text or e-mail.

This feature was requested by our Beta users that loved the detailed analytics from Premier but wanted that level of detail from their on-course play. Seamlessly enter detailed on-course putt data to drive incredible insights that have more granularity than PGA Tour Shotlink putting data. Aimpoint enthusiasts have loved recording their exact grade percentage.


“I’ll be honest, TheStack has worked wonders.” -Matt Fitzpatrick (2022 US Open Champion) after using TheStack to gain 20+ yards

Over 25,000 golfers of all skill levels and handicaps have enjoyed customized variable inertia speed training, which is the most efficient way for a golfer to increase their clubhead speed. Paired with TheStack training club, speed training algorithms power customized dynamic programming borne from years of experimental research by leading sport scientist, Dr. Sasho MacKenzie.

To start speed training you will need TheStack hardware and a compatible Speed Radar.

Payment will be charged to the credit card connected to your iTunes Account when you confirm the initial subscription purchase, or after any initial trial period. Subscriptions automatically renew unless auto-renew is turned off at least 24-hours before the end of the current subscription period. Your account will be charged for renewal within 24-hours prior to the end of the current period, and the cost of the renewal will be identified. You may manage your subscription and auto-renewal may be turned off by going to your Account Settings after the purchase. Any unused portion of a free trial period, if offered, will be forfeited when you purchase a subscription.

Terms of Use:

What’s New

Version 1.24

Watch dozens of concise videos curated by Dr. Sasho MacKenzie. Years of golf biomechanics research and experience working with the world’s top golf instructors and
players have been distilled into the Learning Library.

Quickly display over a dozen key performance metrics for any selection of players in your Stable of Golfers. Key metrics include:
* Days since last session
* Starting driver speed
* Number of completed sessions
* Current program
* Current program speed gain
* Life time speed gain
* Grit Score

* During a Stack session, personal best speed records for the upcoming weight are shown in terms of both single swing and set median.
* In the Speed Record percentile graph, the date the record was set is now displayed next to each record.

* Main screen putting summary statistics now displays strokes gained as a 5-round running average.
* The app can be displayed in portrait mode to maximize screen size when casting to a vertically oriented external display.
* Enhancements to streamline the process of managing app subscriptions.
* General improvements and fixes.

Ratings and Reviews

4.9 out of 5
4.1K Ratings

4.1K Ratings

San Jose Golfer ,

Caution - hidden costs $$

If you are like me, you will drop a few hundred bucks on the stack and a radar. Only to find out a couple months later that you also “need” to get fitted for a new driver to match your new found swing speed. The dollars add up!

I’m 43, in fairly good shape for my age, and play to a ~4 handicap. I started my first training program topping my driver speed out at 101 mph (when I got fitted for my old driver, my “cruising” speed was around 95 mph). I’ve just finished my first program and now my top driver speed is at 112 mph, and my “cruising” speed is around the 105 mph range (which is significantly faster than my hardest swings when I started!). In case you’re wondering, I have not lost accuracy off the tee. My distances with all my clubs are not dialed in just yet, so my handicap hasn’t started to go down. But I am confident this speed will make me a better player.

Now I can’t wait for my new driver with the x-stiff shaft to show up!!

quadcap ,

Easy speed

Interface for speed trading is very slick. There is an emphasis on proper warmup which I think is important for injury prevention. Im in my 50’s and started this after coming off an arm injury so my baseline was lower than if I had started it healthy. Still, the data shows clear speed improvements and it is translating on course. Getting speed feedback on each swing without having to worry about hitting a ball frees up your swing. Then when hitting balls for real I have that same free swing feel. It could be that other speed trainers are just as good, but the stack seems very polished. I have used the putting app two and it is ok but the speed portion is the reason to get this system.

Seanjoon ,

Chasing Speed

From one casual weekend golfer who is about to turn 60 years old to all of you we can golfers. This is the product of the century. It truly works. I have a pretty good golfer with a 7.5 index planning at a pretty tough golf course but always lagging driver distance. I started this program about eight weeks ago with a driver speed of 89 mph. An average driver distance of 235 yards. Now my driver speed is 102 miles an hour with my potential yardage of 284 yards. That is 50 yards theoretically but in real life I got 30 yards my buddies are teeing off the white tees and I’m turning off the blue and out driving them where we used to be about the same.

App Privacy

The developer, The Stack System, LP, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy.

Data Linked to You

The following data may be collected and linked to your identity:

  • Health & Fitness
  • Contact Info
  • User Content
  • Identifiers
  • Usage Data
  • Diagnostics

Privacy practices may vary, for example, based on the features you use or your age. Learn More


  • Family Sharing

    Some in‑app purchases, including subscriptions, may be shareable with your family group when Family Sharing is enabled.

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