Square Golf Launch Monitor vs Voice Caddie Swing Caddie SC4
Side-by-side comparison of specs, features, and pricing
Specs updated
Maintained by GolfSim Compare Team · specs sourced, prices from dated retailer checks · how we compare
Why Square Golf Launch Monitor is better
- Spin measurement: Measured spin (with marked balls) (Measured spin (with marked balls) vs Estimated spin)
- Measured ball data: 5 of 9 ball metrics measured (vs 3) (5 of 9 vs 3 of 9)
- Measured club data: 3 of 5 club metrics measured (vs 1) (3 of 5 vs 1 of 5)
- Club data access: Club data included (Included vs Not available)
- GSPro support: GSPro: native (Native vs No)
- Sim software: 2 more sim titles supported (3 titles vs 1 title)
Why Voice Caddie Swing Caddie SC4 is better
- Price: $149 cheaper ($550 vs $699)
- 3-year cost: $149 cheaper over three years ($550 vs $699)
- Environment: Works indoors and outdoors (Indoor + outdoor vs Indoor only)
- Lefty / righty: No repositioning for left-handers (No repositioning vs Repositioning required)
- Battery life: 2 hours longer battery (10 hr vs 8 hr)
- Built-in display: Built-in display (LCD readout vs None)
Specs Comparison
Square Golf Launch Monitor $699 vs Voice Caddie Swing Caddie SC4 $550
| Specification |  Square Golf Launch Monitor $699 |  Voice Caddie Swing Caddie SC4 $550 |
|---|---|---|
| Price | ||
| Price | $699 | $550 |
| Measurement | ||
| Tracking technology | Photometric (camera) | Doppler radar |
| Radar type | None | Single Doppler |
| Spin measurement | Marked balls only | Estimated |
| Marked balls | — | Not required |
| Accuracy tier | Game-improvement | Game-improvement |
| Ball data | ||
| Ball speed | Measured | Measured |
| Launch angle | Measured | Measured |
| Launch direction | Measured | Measured |
| Spin rate | Measured (marked ball) | Calculated |
| Spin axis | Measured (marked ball) | Not reported |
| Carry distance | Calculated | Calculated |
| Total distance | Calculated | Calculated |
| Apex height | Calculated | Calculated |
| Descent angle | Not reported | Not reported |
| Club data | ||
| Club speed | Not reported | Measured |
| Attack angle | Measured (marked ball) | Not reported |
| Club path | Measured (marked ball) | Not reported |
| Face angle | Measured (marked ball) | Not reported |
| Face to path | Not reported | Not reported |
| Dynamic loft | Measured (marked ball) | Not reported |
| Impact location | Not reported | Not reported |
| Smash factor | Not reported | Calculated |
| Club data unlock | Included | Not available |
| Space & environment | ||
| Environment | Indoor only | Indoor + outdoor |
| Placement | Beside the ball | Behind the ball |
| Setback (ft) | — | 5 |
| Min ball flight (ft) | — | 10 |
| Hitting zone | 5.9 x 5.9 in (15 x 15 cm) | — |
| Lefty / righty | Repositioning required | No repositioning |
| Installation | None (portable) | None (portable) |
| Sim software | ||
| Simulator capable | ✓ Yes | ✓ Yes |
| GSPro support | Native | No |
| E6 Connect support | Native | Native |
| Awesome Golf support | Supported | — |
| FSX Play support | No | No |
| First-party software | Square Golf app (credit-based course play, free range) | E6-bundled; MySwingCaddie app (practice/data only) |
| Sim software | — | OptiShot Orion |
| Included sim content | Square Golf app with 1,000 welcome credits (~55+ solo rounds; 1 credit per hole per golfer, refills from ~$0.02/credit, under $1/round) and free driving range, closest-to-pin, putting practice and game modes. Course count claims differ: PlayBetter's product page lists '10 ultra-realistic courses with 10 more coming soon' while Golfible (2025-11) counts 16 courses, all fictional. GSPro, E6 Connect and Awesome Golf connect via free official plug-ins with no device-side fee (titles sold separately). | E6 Connect license (iOS & PC) with 1 course + 1 driving range included at no extra cost; full E6 course library requires an optional E6 subscription. E6 compatibility was added by app update a few months after launch. |
| Subscription | ||
| Subscription (per year) | None | None |
| Works without subscription | No subscription exists: full ball/club data, driving range and third-party sim plug-ins (GSPro/E6/Awesome Golf) are free with the device. First-party course play uses one-time consumable credits instead of a subscription - 1,000 included, ~55+ solo rounds, refills under $1 per round. | Complete without any subscription: all metrics on the built-in LCD with voice output, free MySwingCaddie app for shot history and swing video overlays. Only optional spend is expanding the E6 Connect course library (third-party title cost). |
| Connectivity & apps | ||
| Apps | iOS, Android, Windows | iOS, Android |
| Built-in display | None | LCD readout |
| Connectivity | Bluetooth | Bluetooth |
| Offline mode | — | ✓ Yes |
| Physical & power | ||
| Weight (lb) | — | 1.3 |
| Dimensions (in) | 7.5 x 2.8 x 2.8 in (19 x 7 x 7 cm) | 4.9 x 7.6 x 1.1 in (124 x 193 x 29 mm) |
| Battery life (hours) | 8 | 10 |
| Removable battery | ✓ Yes | — |
| Power source | Rechargeable battery | Rechargeable battery |
| Alignment | App-guided | Manual target line |
| In the box | Square Golf launch monitor, swing stick (70 cm), 3 dotted marking balls, club shaft marking stickers (20), remote control with li-ion battery, removable li-ion battery | SC4 launch monitor, remote control, USB cable, user manual, E6 Connect license (iOS & PC) |
| Warranty | ||
| Warranty (months) | 24 | — |
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These two track the ball differently: the Square Golf Launch Monitor is a photometric (camera-based) unit, while the Voice Caddie Swing Caddie SC4 is Doppler-radar, per their recorded specs. What that difference means for spin, space, and indoor use is covered in our guide to radar vs camera launch monitors .