What They Have in Common
Both use Doppler radar, work indoors and outdoors, require no subscriptions, no special balls, and no club face stickers. Both connect to E6 Connect for sim play. Both track core ball flight metrics — ball speed, carry distance, spin rate, launch angle, smash factor. For many golfers, the overlap is the whole list they need.
Where They Differ
Technology
The SC4 PRO runs on Voice Caddie's ProMetrics Doppler radar engine. The Mevo Gen 2 uses FlightScope's Fusion Tracking — 3D Doppler radar plus synchronized image processing working together. Fusion tracking tends to be more reliable for spin data, especially indoors, because the camera element helps fill gaps that radar alone can miss. Pure radar spin numbers in a garage or basement can drift depending on ceiling height, lighting, and how much ball flight the unit actually sees. I'd guess the Mevo Gen 2 is meaningfully more consistent on spin indoors, though I don't have head-to-head test data to back that up precisely.
The SC4 PRO's accuracy spec is stated: ±2% ball speed, ±3 yards carry in target mode. FlightScope doesn't publish equivalent tolerances for the Gen 2 in the data I have. Take that difference in transparency however you will.
Data Depth
The Mevo Gen 2 tracks 12 metrics including club speed, spin axis, horizontal launch angle, roll distance, apex height, and lateral landing. The SC4 PRO tracks 9 — swing speed, ball speed, carry, total distance, smash factor, launch angle, apex, spin rate, and spin axis. Both get you the essentials. The Mevo Gen 2 adds horizontal data and roll distance, which matter more for sim accuracy than for a Saturday range session.
The Mevo Gen 2 also includes shot tracer and video overlay through the FS Golf app — your shot shows up on video with the ball flight traced over it. That's a feature the SC4 PRO doesn't have, and it's genuinely useful for coaching yourself.
Display and Standalone Use
This is a real practical difference. The SC4 PRO has a built-in LCD and reads distances aloud. You can set it on the ground at the driving range, hit balls, and hear "152 yards" without touching your phone. The Mevo Gen 2 has no screen — it runs through the FS Golf app on iOS, Android, or PC. At an outdoor range without reliable Wi-Fi, that means squinting at a phone, keeping your battery alive, and hoping the connection holds.
The SC4 PRO also includes a magnetic remote so you can control it without walking back to the unit. Small thing, but it matters when you're doing a long range session.
Sim Software and Course Access
Both include E6 Connect — the Mevo Gen 2 gets 8 courses for life, the SC4 PRO gets 5. The Mevo Gen 2 also connects to GSPro with no additional fee, which is a big deal. GSPro has a large course library and an active community. If you're building a sim setup, the Mevo Gen 2 hands you more without paying extra.
Battery Life
SC4 PRO: up to 10 hours. Mevo Gen 2: up to 6 hours. For most use cases neither runs out in a session, but the SC4 PRO has more runway. Worth noting if you're at a tournament, an all-day fitting, or running a teaching setup with back-to-back students.
Price and Value Math
SC4 PRO: $599. Mevo Gen 2: $1,299. Neither has subscription costs, neither needs special balls. After 3 years the gap is still $700. After 5 years, still $700. The Mevo Gen 2 doesn't have a cheaper version of itself. If you want Fusion Tracking and the FS Golf ecosystem, this is the entry point.
Who Should Buy Which
FlightScope Mevo Gen 2
- You're building a home sim and want GSPro access without paying another license fee on top of the hardware.
- You hit a lot of balls indoors and want spin data you can actually trust — the fusion tracking is more reliable in a controlled space than pure radar.
- You want shot tracer video for self-coaching or sending clips to an instructor.
- You track your game closely and use metrics like horizontal launch angle, roll distance, or lateral landing to understand your misses.
- You're comfortable using a phone or tablet as your display and you have a stable setup to mount or prop it.
Swing Caddie SC4 PRO
- You go to the driving range two or three times a week and want to know your real carry numbers without fiddling with an app.
- You want something lightweight and low-friction — set it down, hit, hear the number, move on.
- The $700 price difference would genuinely change what else you can do with that money this year.
- You play outdoors most of the time and don't have a dedicated sim space at home.
- You don't care about horizontal data or shot tracer — you want reliable distance and basic ball flight, and you want to hear it out loud.
The Bottom Line
If you're at the range more than you're in a sim room, the SC4 PRO at $599 does what you actually need — built-in screen, voice output, solid radar data, no subscriptions, no hassle. The Mevo Gen 2 is a legitimately better launch monitor with deeper data, better indoor spin reliability, and more sim integration, but it costs $700 more and requires your phone as the interface. That's a real trade-off, not a clear upgrade path for everyone.
Get the Swing Caddie SC4 PRO.
See Also