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Comparison

LM1 vs SC4 PRO

Short answer

Both are radars that sit behind the ball and show the numbers on their own screen, but only the SC4 PRO plays courses. The Shot Scope LM1 is a $199.99 range tool with five numbers and no software; the Voice Caddie SC4 PRO is $350 more, adds launch angle, apex and a calculated spin rate, reads each distance aloud and runs E6 Connect with five courses included. GSPro lists neither.

Shot Scope LM1Shot ScopeLM1
$200
Buy at Amazon · $200, LM1Compare 3 retailers
vs
Voice Caddie SC4 PROVoice CaddieSC4 PRO
$550
Buy at Amazon · $500, SC4 PROCompare 4 retailers

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By buyer

Which one for you

Range or backyard net, no software
Shot Scope LM1. $199.99 once, five numbers on its own screen, nothing to subscribe to or connect.
Want launch angle and spoken yardages at the range
Voice Caddie SC4 PRO. Launch, apex and a calculated spin rate on the display, each distance read aloud, about 10 hours of battery.
A few rounds at home on top of range work
Voice Caddie SC4 PRO. Five E6 Connect courses and a range are included on iOS or a PC; the LM1 plays no courses at all.
Building a home simulator
Neither. The Garmin R10 or the Square Golf Home: both on GSPro's official list, with their own course play.

Also worth a look

More comparisons with the LM1 and SC4 PRO

Bottom line

The longer answer

The LM1 is $199.99 at every retailer we track. The SC4 PRO is $549.99 at Indoor Golf Outlet and $599.99 at PlayBetter and Rain or Shine. Both are Doppler radars that sit about 5 ft behind the ball with a display on the unit, so neither needs a phone for a range session.

The LM1 measures ball speed, carry, total distance, club speed and smash factor, and nothing else: no launch angle, no spin, no direction. Its screen keeps up to 1,920 shots, the battery runs about five hours on USB-C, and Shot Scope gives it a two-year warranty. The SC4 PRO adds launch angle and apex, plus a spin rate and spin axis that it calculates rather than measures, and it announces each distance aloud. Its battery runs about 10 hours; the warranty is one year.

Software is the real split. The LM1 has none: no app-based simulator and no third-party software, so it never costs another dollar and never plays a course. The SC4 PRO comes with Voice Caddie's free VOICECADDIE S app, a 3D driving range, and plays courses through E6 Connect on iOS or a Windows PC (not Android). Voice Caddie includes five courses and a range; the full library is an E6 subscription, $300 a year for Basic or $600 for Expanded, which puts five years at about $3,550 with Expanded.

Indoors, the SC4 PRO needs room behind and in front of the ball: Voice Caddie's manual puts the unit 5 ft behind the ball and the ball at least 10 ft from the net, 15 ft in all. Buy the LM1 for range or backyard-net feedback at the lowest cost; buy the SC4 PRO if you want launch and spin numbers at the range and a few E6 rounds at home. If a home simulator is the goal, look past both: the Garmin R10 ($499.99) and the Square Golf Home ($699.99) are on GSPro's official list, and both have course play of their own.

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Full specificationsEvery spec for both, line by line

Specifications

The numbers, lined up.

Hardware

  • Tracking Method
    LM1Single Doppler radar
    SC4 PRODoppler radar
  • Indoor/Outdoor
    LM1Both (most useful at range / hitting net)
    SC4 PROBoth (outdoor primary)
  • Built-in Display
    LM13.5" screen, history of up to 1,920 shots
    SC4 PROYes
  • Battery Life
    LM1About 5 hours (USB-C charging)
    SC4 PROAbout 10 hours
  • Placement
    LM15 ft behind the ball (Shot Scope also gives 4–5 ft and 1.4–1.5 m; plan on the 5 ft)
    SC4 PRO—
  • Warranty
    LM12 years
    SC4 PRO1 year
  • Voice Output
    LM1—
    SC4 PRODistance announcement

Data

  • Ball Data
    LM1Speed, carry, total distance
    SC4 PROSpeed, launch angle, apex, calculated spin/spin axis
  • Club Data
    LM1Clubhead speed, smash factor only
    SC4 PROClubhead speed, smash factor

Software

  • Subscription
    LM1None
    SC4 PRONone required; E6 Connect Basic $300/yr or Expanded $600/yr for the full course library
  • Sim Compatibility
    LM1None — standalone unit
    SC4 PROE6 Connect on iOS or Windows (5 courses + driving range included, per Voice Caddie; full library by subscription; not on Android); no GSPro

Requirements

  • Room Depth
    LM1—
    SC4 PRO15 ft minimum: unit 5 ft behind the ball and at least 10 ft from ball to net (Voice Caddie's manual). Its FAQ allows 9 ft to the net if space is tight; we use the manual's stricter figure

Room planner

See each one in your sim room.

The planner draws each unit to scale with your room and your swing: where it sits, and whether your swing clears the ceiling, walls and screen. Put in your room once, then switch units in the planner to compare.

See the LM1 in your sim room →See the SC4 PRO in your sim room →
Persona fitWho each one is better for

Who each one is better for

Both fit the same buyers.

Neither one wins a persona the other doesn’t. The choice comes down to specs, price, and room fit rather than buyer profile.

Both fit

  • Recreational Player
  • Cost-Effective Buyer

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