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Key Takeaways
- Real speed gains – Commit to the program, and you will swing faster. The Stack’s app adapts to your profile and tracks progress session by session.
- App-driven simplicity – No studying required. The app tells you which weight, how many reps, and how hard to swing. Accountability features like “Grit Score” keep you honest.
- Speed doesn’t fix flaws – Faster swing with poor mechanics means bigger misses. Use the Stack alongside fundamentals work, not as a shortcut to lower scores.
I’ll say this straight: the Stack makes you faster
Here’s the thing nobody talks about with speed training: it works. Commit for a few weeks, and you will swing faster. The company has data from thousands of golfers who’ve done exactly that. This isn’t one of those reviews where I dance around whether the thing delivers.
So think of this less as a verdict on the Stack’s core promise — it delivers — and more as a look at how it works, how well it’s built, and whether it’s the right investment for you. Because here’s a truth that’s worth sitting with: speed doesn’t always mean better scores.
Let’s walk through it all so you can decide if the Stack belongs in your bag room.
What exactly is the Stack?
The Stack is a short, hybrid-length training club with milled weights that thread onto the end. Five weights, 30 combinations, from 0 up to 300 grams. You pair it with an app and a radar that reads swing speed. The app runs a baseline, figures out how you generate speed, then builds a custom program — weight selection, rep count, intensity — session by session.
Here’s what I really like: you don’t need to study. No science homework. You just show up, and the app says, “Load this weight, swing at this effort, rest this long.” For most people, that simplicity is huge. It’s what gets you to stick with it.
The Stack was built by Marty Jertson, a longtime Ping engineer, and Dr. Sasho MacKenzie, one of the most respected biomechanics experts in golf. And the company has real traction at the highest level. Remember Matt Fitzpatrick adding serious distance right before winning the 2022 U.S. Open? That was the Stack.
The pedigree is solid. The question is whether it’s worth your time and money.
First impressions of the hardware
I’ve tested a lot of training aids. Many feel like cheap plastic that won’t last a season. The Stack is not that. The weights are CNC-milled, thread cleanly, and nothing rattles. It feels like a finished product from a major brand. I’m not calling the Stack unestablished — but the packaging and look punch above their weight.
Build quality matters here because you’re going to swing this thing as hard as you physically can, over and over. It’s got to hold up. It does. I’m impressed.
The club is short — closer to a hybrid than a driver. That means you can swing indoors with decent ceiling height. Depending on your height, 8-foot ceilings work without cramping.
The app is the centerpiece
The hardware is nice, but the app is what you’re paying for. And it’s well thought out. You start with a baseline — swinging different weights so the app maps your speed profile. Then it builds your program. The entry point is called Foundation, roughly 18 sessions over six weeks.
Every session is guided: weight, reps, rest intervals, intensity. It logs everything automatically. To me, the structure is the value. It removes excuses. You just commit, and the app takes over. If you drift, it sends reminders. You even get a “Grit Score” that tracks your consistency. Accountability built right in.
The app also includes wedge-distance and putting practice modes, plus a library of instructional videos. I won’t dive into those today, but it’s extra value. Your first year is included with the hardware. After that, $99/year for speed training, or $129/year for Stack Stats (Premium).
I think that’s fair — but only if you use it. Similar to the Golf Forever system: great if you stay consistent, a waste if you don’t.
You need a radar launch monitor
Here’s a point many first-timers miss: you must have a radar that reads clubhead speed to use the Stack. Options: buy the hardware alone ($299) and pair with your own radar, or get the bundle with the Stack Speed Radar ($499).
I’m a big fan of owning a launch monitor anyway. But if you don’t have one, factor that cost. The Stack Speed Radar is… fine. It works for speed numbers but feels like cheap plastic and has limited features. For about $200, the Shot Scope LM1 offers great accuracy.
For full app integration, the FlightScope Mevo Gen 2 and Rapsodo MLM2PRO are the best options. If you’re serious about both speed training and a legit launch monitor, those are worth the investment.
Stack vs. SuperSpeed
SuperSpeed put overspeed training on the map. Both products share the core idea: swing as fast as you can until your body adapts. But that’s where similarities end.
SuperSpeed is simpler: three weighted sticks, fixed protocols, about five minutes per session, no radar or app required. Around $140.
The Stack is a more serious tool: adjustable weights, app that measures every swing, builds custom programs, and adjusts as you improve. But it costs more, especially with radar and subscription.
If you’re speed-curious or on a budget, SuperSpeed is fine. If you know you’ll commit and love data, the Stack wins by a wide margin. But you pay for that.
Real world: a friend’s experience
I haven’t gone deep with my own speed training — yet. But a friend has. He pairs the Stack with Hackmotion 4 and couldn’t be happier. Here’s what he told me:
“I have all the swing training aids. Hackmotion is THE one. And Stack is amazing because a) you can do it at home, and b) it’s a real workout. I’m gassed after sessions, heart rate 115-120bpm. Even better: I took two months off and retained the speed. The Putting mode is fantastic — it simulates competitive golf and calls out my biases (slow and left). The Wedge mode does the same. You learn to ‘feel’ 3 yards off a swing.”
I get positive feedback from readers on many products, but the Stack consistently gets high marks from those who commit.
Is speed training really what you need?
No question the Stack will make you faster. The problem: faster doesn’t automatically mean better scores. A faster swing with the same flaws is just faster bad swings. If your path or face is off, more speed means bigger misses.
That’s why I think pairing the Stack with something like Hackmotion — which helps ensure your swing mechanics are sound — is smart for many players. Speed is one ingredient, not a solution.
For players with solid fundamentals, the Stack likely translates into lower scores. For newer golfers or those struggling to build a repeatable swing, speed training can be a distraction. Plus, every session stacking is time not spent chipping or putting. Be honest about where you are.
Is the Stack worth it?
If you’re a shorter hitter tired of long irons while your buddies flip wedges, the Stack can change the shots you leave yourself. That’s worth a lot. If you love data and structure, and the sight of a number climbing keeps you engaged, you’ll stick with it — and consistency is half the battle.
Price isn’t the big issue. At $299 (hardware only), with a reasonable annual fee, it’s fair. The real challenge is time. You’re committing to 30+ minute sessions, multiple times a week. If you’re not all-in, you won’t see results.
For the right golfer — someone with solid fundamentals who wants more distance and will put in the work — the Stack is an easy recommendation. Just go in knowing that speed gains still need to be paired with real practice to pay off on the scorecard.
Final verdict
The Stack is beautifully made, its app does the thinking for you, and it reliably adds speed if you commit. Budget for the radar and subscription before buying, and remember: speed alone won’t fix your swing. But for the player who’s ready to put in the time, it’s the best speed training system on the market. Walk the course, train with purpose, and the results will follow.
Playing golf since before GPS rangefinders existed. Eddie covers the classic game — courses, technique, and the stories worth keeping.