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Best Swing Analyzers: Blast vs Arccos vs HackMotion
Your phone tracks your steps. Your watch tracks your heart rate. Yet most mid-handicappers have zero data on what their golf swing is actually doing. They show up to the range, hit 50 balls, and hope something improves.
That is insane.
If you are a 10 to 25 handicap, you are good enough to benefit from swing data but not so good you already know your patterns. You do not need a $500 launch monitor. You need a wearable sensor that tells you what is broken so you can stop practicing the wrong thing.
I tested three of them: Blast Motion ($150), Arccos Caddie ($250), and HackMotion Core ($295). After three weeks with each, I have opinions.
Blast Motion: The Putting Secret Weapon
Blast is an 8.1-gram sensor that clips into the butt end of your club. Point the Blast Man logo toward the clubface, pair with your phone, and swing. Setup takes 90 seconds.
It tracks two categories. Full swing: swing speed, tempo ratio, backswing time, downswing time, attack angle, and peak hand speed. Putting: face angle at impact, backstroke length, loft change, lie change, and stroke tempo.
The putting analysis is where Blast earns its $150 price tag. I thought I had a smooth stroke until the sensor showed my face angle bouncing between 1.2 degrees open and 2.8 degrees closed on 4-footers. That explained the random left-and-right misses. After two weeks of working on face angle consistency, I got it inside plus or minus 1 degree. My three-putt count dropped noticeably.
The video capture is a bonus. Prop up your phone, hit record, and the app auto-clips each swing with metrics overlaid. Scrubbing through in slow motion is genuinely useful.
What does not work. The full swing speed numbers are unreliable. Multiple Reddit users on Android reported readings 15 mph below actual. Breaking Eighty saw the sensor miss one in five short game strokes unless the rubber attachment was perfectly seated. I had the same issue on my third session. Reseating it fixed it, but you should not have to troubleshoot a sensor mid-session.
Then there is the subscription. One month free, then 10 swings per day on the free tier. Full access costs $74.90 per year (or $9.99 monthly). The hardware is $150. The subscription is $75 a year, every year. Blast does not advertise that price on the box β and when a company hides the ongoing cost, it is because the cost is not small.
Verdict: Buy it if putting is your biggest problem. For $150 plus $75 a year, the putting analysis alone is worth it if you three-putt more than twice a round. For full swing work, look elsewhere.
Arccos Caddie: The Stats Nerdβs Dream
Arccos is not a practice sensor. It is an on-course shot tracking system.
You screw 14 sensors into the butt of each club, download the app, and play golf. The system automatically tracks every shot. After your round you get full strokes gained data: driving, approach, short game, putting. It tells you exactly where you lose strokes compared to your target handicap.
The sensors are Gen 3+, and the putter sensor now distinguishes tap-ins from real strokes. Independent Golf Reviews tracked six rounds and reported zero missed shots.
The caddie feature learns your true distances from on-course shots. It tells you to hit 7-iron instead of 8-iron because your 7-iron actually flies 152, not 160. That is useful when there is water short.
What does not work. The subscription is steep: $155.88 per year after the free first year. Sensors cost $200 to $250 upfront. Every year after is another $156.
This is not a practice tool. Arccos tells you what happened on the course, not what to fix on the range. If you play twice a month, that is $6.50 per round for stats. Twice a week drops it to $1.50.
Verdict: Buy it if you play 30+ rounds a year and actually review your stats. The data is excellent. The subscription is real money. If your phone is already in your pocket during every round, Arccos will quietly change how you think about your game. If you play once a week and never look at the app post-round, save your money.
HackMotion Core: The Wrist Mechanic
HackMotion straps a sensor to your lead wrist and measures flexion, extension, and deviation in real time. You swing, the app chimes, and a 3D model shows your wrist position at address, top, and impact.
The pitch is simple. Your wrists are the only connection between your body and the club. If your wrist is too extended at impact, the clubface is open and you flip at the ball. Fix the wrist, fix the strike.
The audio biofeedback mode is the killer feature. Set a target range for wrist extension. When you land in it, you hear a chime. When you miss, silence. After 20 swings you stop looking at the phone and just swing for the chime.
AmateurGolf.com tested HackMotion with three golfers from scratch to 11 handicap. All three improved wrist consistency. Todd Mrowice, an 11 handicap, said the Core at $295 was a better investment than a new driver.
What does not work. It does not track tempo, swing speed, or shot shape. If your swing path is the problem, HackMotion will not tell you. Putting analysis requires the $495 Plus tier. The Pro tier is $995.
It also demands some knowledge. You need to understand what flexion and extension mean. The app provides Tour reference ranges, but if wrist mechanics sounds like a physics lecture, you will get frustrated.
Verdict: Buy it if you are a 10 to 20 handicap with consistent ball-striking problems. HackMotion fixes the specific problem of wrist inconsistency. It does not fix everything else. At $295 with no subscription, it is the best value if wrist angles are actually what is wrong with your swing.
Briefly: deWiz ($699)
deWiz is a premium watch-like wearable that buzzes your wrist when your swing goes outside set parameters. It costs $699 plus $5 per month. Cool tech. Not worth it for a 15-handicap when Blast and HackMotion cover the same problems for less than half the price.
What I Would Actually Buy
If you are a 15-handicap and can only buy one thing, start here.
Get Blast Motion for $150. The putting data alone will save you more strokes than anything else on this list. Three-putt avoidance is the fastest path to lower scores for a 15-handicap. The $75 yearly subscription stings but is manageable if you use it weekly.
Add HackMotion Core later, for $295. Once your putting is consistent, the wrist sensor is the next logical step. It fixes the root cause of fat shots, thin shots, and inconsistent distance. No subscription.
Total: $445 upfront, $75 per year. Less than a new driver, and it actually fixes your swing.
Where to Buy
- Blast Motion $149.95 at Amazon
- Arccos Caddie Smart Sensors $200-$250 at Amazon
- HackMotion Core $295 at Amazon
Prices updated August 2026. As an Amazon Associate we earn from qualifying purchases.
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