The Stack System Review: My Honest Thoughts

If you’re like most golfers, you want more distance off the tee, and increasing swing speed is one of the fastest ways to get there. While traditional strength training and flexibility work can help, many golfers turn to overspeed training—a proven method designed to retrain your body to move faster.

I’ve been doing various forms of sped training since 2020. Testing out all the popular devices from SuperSpeed, Rypstick, Orange Whip, and The Stack System. The latter gained attention as one of the most advanced golf speed training programs, promising measurable gains in swing speed through a data-driven approach, in recent years. 

Used by professionals like Matt Fitzpatrick, this system offers personalized training plans, real-time swing tracking, and AI-powered adjustments to optimize your speed training. But does it really work, and is it worth the investment? For The Stack System review, I’ll share my personal experience using it, and whether it’s the best speed trainer for your game—or if there’s a better alternative. 

The Stack System Review: Worth The Pricetag?

One of the biggest reasons The Stack System has gained so much attention is because of Sasho MacKenzie, the sports scientist behind its design. Dr. MacKenzie is a biomechanics expert and one of the leading researchers in golf swing speed, known for his deep understanding of how golfers can train their bodies to move faster and more efficiently. His expertise led to the creation of The Stack System, a data-driven overspeed training program that adapts to each golfer's progress.

While speed training has been around for years thanks to SuperSpeed Golf, The Stack System became a hot topic after Matt Fitzpatrick credited it for his transformation ahead of the 2022 U.S. Open. Fitzpatrick, known for his precision but not necessarily his power, gained a significant amount of clubhead speed using The Stack System. I remember watching the tournament, thinking how much better his swing looked and how much his distance improved. And clearly it paid off as he captured his first major victory. Which led me to give it a shot in hopes to swing it faster. 

What’s Included

When you purchase The Stack System, you receive a complete speed training kit designed to help increase swing speed efficiently. The package includes:

• The Stack Speed Trainer: A specialized training club engineered with an interchangeable weight system to customize resistance levels during training.
• Set of Adjustable Weights: A collection of precision-calibrated weights that attach to the trainer, allowing for progressive speed training adjustments.
• The Stack App (Subscription Required): A data-driven training app that personalizes your speed training program based on your swing characteristics and progress. This is free for the first year but does require a paid membership after the original trial period ends. 
• Optional Stack Radar (Sold Separately): A Bluetooth-enabled speed tracking device that syncs with the app to provide real-time swing speed data.

This system is designed to provide customized, app-guided speed training based on your individual swing profile, making it a structured way to improve clubhead speed over time.

The Stack System Protocol

After setting up your account, you’ll select a training plan based on your goals. The Stack System offers multiple programs, including those for maximizing distance, building speed endurance, or maintaining speed gains. Your choice will determine the structure and intensity of your training sessions.

Next, you’ll complete the initial speed test, which involves swinging The Stack trainer at full speed while the app records your data. This step is crucial, as it establishes a baseline swing speed, allowing the AI-powered system to customize your plan based on your current abilities and progress.

From there, the app generates a personalized speed training program, outlining specific swing speeds, weights, and reps for each session. As you train, it adjusts in real-time based on your results, ensuring you’re constantly improving without overtraining.

By following your customized program consistently, The Stack System aims to increase your swing speed, optimize efficiency, and ultimately help you hit longer, more powerful drives. I saw some quick gains and enjoyed how you could adjust the weights unlike SuperSpeed Golf

However, I struggled to swing it as fast as I thought I could due to the shorter length (since it's not a driver length club). I also had some issues with the app and data - it felt like a bit much all the time and my speed radar didn't often sync with the app. 

Pros 

• Extremely advanced analytics. 
• They offer a specific pre-round warm up routine. 
• Custom plans as you progress in your speed journey. 
• One club design makes it easy to carry in your bag at all times.
• The app has tons of features to help with other areas of the game, like putting. 

Cons

• Not available for Android users. 
• No options for women, juniors, or seniors.
• The most expensive speed trainer on the market. 
• Not the length of a driver, making it harder to transition when hitting your normal club.
• The process is somewhat exhausting at times as the Stack System is very data heavy. 

The Stack System App

I used this speed training system for roughly three months and did get some results. 

While I think there is a better alternative for most golfers (see below), I do have to give props to The Stack System app. It is very advanced and great for golfers who want truly custom speed training plans. It has features to keep you motivated and accountable like "Grit" score too.

Additionally, they also have some amazing putting features that can help you measure your putting practice much more effectively. I like using the DECADE Golf app for various drills and putting routines, but this is a big benefit for The Stack System app.

As mentioned above, this is a free app the first year and then requires a paid membership to keep using. 

Wicked Smart Golf Speed Trainer Pick: Rypstick

While The Stack System is arguably the most advanced speed training system, it’s also the most expensive. The high price and overwhelming amount of data can frustrate a lot of golfers, which is why I prefer Rypstick.  

Here’s why I believe Rypstick stands out as the top speed trainer in golf. 

• Same Length as Driver: The main reason I switched from The Stack System to Rypstick is because of the length of the speed trainer. The Stack is around 42 inches, which makes no sense to me, as the goal of speed training isn’t to hit a 7-iron longer… it’s to hit a driver long. Which feels like it would be much more beneficial to train with a club that matches a driver length. Depending on the model you buy, a Rypstick is between 44–45 inches, which mirrors the length of a driver.  
• Easier to Use: SuperSpeed requires switching between three different clubs, which can be inconvenient if you speed train at the golf course. Rypstick combines all weight variations into one adjustable club, making training simpler and more efficient.
• Proven 40-Day Guarantee: The Stack System delivers results, but progress varies, and there’s no official timeline. Rypstick guarantees you’ll add distance within 40 days—or your money back, making it a risk-free investment in your game.

• Tailored for Every Golfer: Rypstick isn’t a one-size-fits-all tool like the Stack System. It offers custom versions for juniors, seniors, men, and women, plus an indoor option for those with limited space. The Stack System has fewer options for different player types, which feels like a missed opportunity for such a high price tag. 
• Easier on your joints: Speed training can put extra strain on your body, but Rypstick’s counterweight grip helps reduce stress on your joints and promotes a more balanced, efficient motion. The Stack System lacks this feature, which can lead to extra wrist and back tension over time.

• Exclusive Free Swing Analysis:  With every Rypstick purchase, you get a free swing analysis from Dr. Luke Benoit, the product’s creator and #1 rated coach in MN by Golf Digest. This personalized feedback ensures you’re training effectively—something The Stack System doesn’t offer.

Additionally, I’ve found that Rypstick’s app and training plan are more user-friendly and easier to follow than The Stack System’s complex tracking system. This is now the only speed trainer I use and recommend to my podcast listeners, and I’ve seen students add 20+ mph to their swing using this system.

Learn more about Rypstick vs. The Stack System. 

Closing Thoughts

The Stack System is a solid option for extremely tech-savvy and advanced golfers. But let’s face it, that isn’t most weekend warriors who simply want to add distance and outdrive your buddies.

This is why I think Rypstick is the clear winner for the best speed training device. If you want to get started with Rypstick, they’ve also extended a 10% discount code if you use “WICKEDSMART” at checkout. 

Start speed training with Rypstick now so you can hit it longer and make golf substantially easier.