Two launch monitors. One hundred dollar price gap. Two completely different ways of tracking a golf ball.
The Blue Tees Rainmaker is a Doppler radar unit — sits behind you, bounces radio waves off the ball in flight. Same tech as the Garmin R10 and SC4 Pro, but with a built-in 4.3-inch display that lets you see your numbers without touching your phone.
The Square Golf Home Edition is a photometric (camera-based) unit — sits beside the ball, takes high-speed photos at impact, calculates everything from that single image. Same tech as a GC3 or SkyTrak+, at one-tenth the price.
They’re both around $600. They’re both 2026 products. They’re both aimed at the same buyer — the guy who wants real golf data without spending rent money.
And they couldn’t be more different.
You’re not picking between two similar monitors. You’re picking between two philosophies of home golf. Pick wrong and every session will feel like a compromise. Pick right and you’ll wonder why you didn’t do this years ago.
The Core Difference: Radar vs Camera
This is the only thing you need to understand. Everything else — accuracy, space, software, putting — flows from this one distinction.
Radar (Blue Tees Rainmaker):
- Sits 7-8 feet behind the ball
- Tracks the ball through its entire flight
- Needs 16-18 feet of room depth indoors
- Works indoors AND outdoors (sunlight doesn’t matter)
- Spin is calculated via algorithm, not directly measured
- Can’t read short shots (chip/pitch/putt) reliably
Camera (Square Golf HE):
- Sits beside the ball (42cm away, 15cm in front)
- Captures everything at the moment of impact
- Needs exactly as much room as a golf swing
- Indoor ONLY (sunlight interferes with cameras)
- Spin is directly measured by the camera
- Short game and putting work perfectly
Here’s the analogy: radar is a cop with a speed gun on the highway. He clocks you as you fly past. Camera is a traffic light camera — it catches you right there at the intersection. Both measure speed. Both work. But one needs you to drive past, and one catches you right where you are.
| Metric | Blue Tees Rainmaker | Square Golf HE | |––––|––––––––––|––––––––| | Technology | Doppler radar | Dual camera (photometric) | | Placement | Behind ball (7-8 ft) | Beside ball (42cm) | | Outdoor use | Yes | No (indoor only) | | Room depth needed | 16-18 ft | Swing room only (8-10 ft) | | Spin measurement | Calculated | Direct (camera) | | Short game | Unreliable (chips/pitches) | Excellent | | Putting | Auto-putt only | Real putting tracking | | Built-in display | Yes (4.3“ TFT) | No (needs phone/tablet/PC) | | Phone app | iPad only (iPhone/Android coming) | Full iOS/Android/Windows | | GSPro | Yes (public beta) | Yes (free connector) | | E6 Connect | Coming soon | Yes | | Subscription | 1yr free GAME AI+ included | None (ever) | | Battery | 7 hours | 8 hours | | Weight | ~1.5 lbs | ~1 lb | | Rating | 6.5/10 | 8.0/10 |
Accuracy: Two Different Games
Let’s be honest about what $600 buys you in launch monitor accuracy.
The Square Golf HE is the more accurate device in an indoor setting. Not by a little — by a meaningful margin. Independent tests against GCQuad and GC3 show ball speed within 1-2 mph, carry within a couple yards, and spin directly measured within a few hundred RPM of reference. That’s legitimately good accuracy at any price, let alone $699.
The Rainmaker is accurate enough for most purposes — ball speed and carry distance are solid. But PlayBetter’s testing found attack angle and total distance “run high,” and spin is calculated rather than measured. The difference shows up most in wedge work, where spin rate matters. The Square tells you what your 56-degree actually did. The Rainmaker guesses.
The indoor test is the separator. In a standard garage — 10 feet of clearance, net 8 feet away — the Square delivers full data on every shot because it captures everything at impact. The Rainmaker needs 16-18 feet of ball flight to get a solid read. If your room is under 15 feet deep, the Rainmaker will struggle and the Square will excel.
Outside at the range, the Rainmaker is the better tool because the Square simply doesn’t work in sunlight. But this isn’t about one being better. It’s about which environment you actually play in.
The Display Question
The Rainmaker’s built-in 4.3-inch TFT display is its biggest selling point. You set it up, you hit balls, and the six core metrics show up on the screen. No phone. No pairing. No fumbling with an app between shots.
For range sessions, this is genuinely better than any phone-based system. You just look down, see your number, grab another ball. No notifications. No battery anxiety. No tap-to-wake.
The Square doesn’t have a display. You need a phone, tablet, or PC to see your data. In a garage setup with the phone on a stand next to you, this is a zero-issue. But the Rainmaker’s display is a real advantage for the guy who wants to turn it on and hit balls without any other device in the room.
That said: the Rainmaker’s display shows basic numbers. If you want graphs, trends, session history, or any kind of detailed analysis, you need the app anyway. And the app is iPad-only.
Maturity: Complete vs Coming Soon
This is the most important consideration that doesn’t show up on a spec sheet.
The Square Golf HE shipped in December 2024. It’s been on the market for 7 months. The app works on iOS, Android, and Windows. GSPro and E6 Connect integrate seamlessly. Putting actually tracks. The community is active. The firmware is stable. It’s a finished product.
The Blue Tees Rainmaker shipped in 2026 and feels like a beta. GSPro works via public beta — it’s functional but not polished. E6 Connect is “coming soon” with no firm date. The phone app is iPad-only, which means if you don’t own an iPad, you’re locked out of session review, settings, and firmware updates. Club selection is limited. RCT ball support isn’t live. Attack angle reads high. Blue Tees is a rangefinder company entering a new category, and the growing pains show.
| Category | Square Golf HE | Blue Tees Rainmaker |
|---|---|---|
| Launch date | Dec 2024 | 2026 |
| App maturity | Full (iOS/Android/Windows) | iPad-only (phone coming) |
| GSPro | Official, stable | Public beta |
| E6 Connect | Live | Coming soon |
| Putting | Real tracking | Auto-putt |
| Short game | Reliable | Unreliable |
| Firmware stability | Mature | Early |
| Community | Active, growing | Small, early |
The Rainmaker will get there. The hardware is solid. Blue Tees has the resources to keep developing the software. But “will get there” is not the same as “is there.” If you’re buying today, the Square is a finished product and the Rainmaker is a promise.
Putting & Short Game: Not Even Close
The Square Golf HE has real putting. Adjustable green speeds. Dedicated putting practice mode. It tracks your stroke. It gives you feedback. You can actually practice the part of the game that accounts for half your score.
The Blue Tees Rainmaker does auto-putt. You hit a putt, the system guesses how close you are, and moves on. No putting practice. No stroke feedback. No improvement.
This is a radar limitation, not a Rainmaker-specific issue. No budget radar unit handles putting well. But it’s a massive difference in what you can actually do with your simulator. If putting matters to you — and it should — the Square is your only option between these two.
Short game is similar. The Square reads chips and partial wedges realistically. The Rainmaker struggles — inconsistent readings or no readings at all on anything shorter than a full swing.
Software Ecosystem
Square Golf HE:
- Native app on iOS, Android, and Windows
- Practice modes are free forever
- Course play: 1,000 credits included (~55+ rounds), ~$0.03/hole after
- GSPro: Free connector (no extra fee beyond GSPro’s $250/yr)
- E6 Connect: Works
- Awesome Golf: Works
- No subscription for anything
Blue Tees Rainmaker:
- Native app: iPad only (iPhone/Android expected)
- GSPro: Public beta (functional)
- E6 Connect: Coming soon
- 1-year free GAME AI+ Intelligence Tier included
- Limited club selection in app
The Square’s software is more complete, more accessible, and cheaper over time. The Rainmaker’s software situation is the biggest reason to wait before buying. If E6 is your platform, the Rainmaker can’t help you today. If you use Android, the Rainmaker can’t help you today.
Price & Total Cost
| Blue Tees Rainmaker | Square Golf HE | |
|---|---|---|
| Hardware | $599 | $699 |
| Subscription | $0 (1yr free AI+, no mandatory fee) | $0 (never) |
| GSPro (3 years) | $750 | $750 |
| E6 Connect | $300/yr (when available) | $300/yr |
| 3-year total (no sim software) | $599 | $699 |
| 3-year total (w/ GSPro) | $1,349 | $1,449 |
The Rainmaker is $100 cheaper upfront. Both have no mandatory subscription. Over three years with GSPro, the Rainmaker saves you $100. That’s the gap.
But the Square includes the Swing Stick, a remote control, 3 dotted balls, and shaft stickers in the box. The Rainmaker gives you the unit and a 1-year AI subscription. Square’s $100 premium gets you a more complete starter kit.
Who Should Buy What
Choose the Blue Tees Rainmaker if:
- You want a range monitor AND a home sim — the Rainmaker does both
- You want a built-in display — no phone needed for basic practice
- You’re patient and willing to wait for software updates
- You have 16+ feet of room depth in your garage
- You’re fine with limited short game and auto-putt
- You own an iPad (or are willing to buy one)
Choose the Square Golf HE if:
- You’re building a dedicated indoor simulator that stays in your garage or spare room
- Your room is under 14 feet deep — the Square works in spaces radar can’t
- You want real putting — this is the single biggest differentiator
- You want camera-based accuracy with directly measured spin
- You want software that works today — not “coming soon”
- You want no subscription, ever
Verdict
The Square Golf Home Edition wins this comparison for the dedicated indoor sim buyer. It’s more accurate in tight spaces. Putting works. The app is mature. GSPro and E6 integrate seamlessly. Camera-based tracking is simply better for a garage setup where radar needs 16 feet of flight space that most garages don’t have. Over three years, the $100 price difference disappears into the better experience you get every time you use it.
The Blue Tees Rainmaker wins for the hybrid buyer — the guy who wants one device for the range AND the garage. The built-in display is genuinely useful. The outdoor capability is a superpower the Square can’t match. And at $599, the hardware is a bargain. But you need patience. The software needs to catch up. If you can wait 3-6 months for the app and E6 and the bugs to be sorted, the Rainmaker could be the better long-term play.
Here’s my honest take: if 90% of your golf happens in your garage, buy the Square. Don’t overthink it. Camera-based accuracy, real putting, mature software, everything works today. It’s the best value in budget sim golf and it’s not close.
If you’re at the range twice a week and want a launch monitor that comes with you, buy the Rainmaker. Just know you’re buying a product that’s still being finished. The hardware is there. The software will catch up.
Same price range. Different tools. Different buyers. Pick the one that matches your actual life — not the one that looks better on paper at 2 AM.
Read the full reviews: Square Golf HE Review · Blue Tees Rainmaker Review
See how they stack up against the field: Best Launch Monitors Under $1,000 · Camera vs Radar Guide · Best No-Subscription Launch Monitors
Check Square Golf HE Pricing → Check Blue Tees Rainmaker Pricing →
Need the full picture on costs? 5-Year Total Cost of Ownership → with software subscriptions, mats that wear out, and the hidden expenses nobody talks about.

