Launch monitors explained: what your money actually buys

Buy a launch monitor for the job you actually want it to do: entry units like the Shot Scope LM1 (around $250) for honest practice numbers, value all-rounders like the Garmin R10 for app-based simulator play, and photometric units like the SkyTrak+ only if you're building a serious garage sim. Overbuying precision you'll never use is the single most common mistake. Here's what your money actually buys, in plain English.

Radar vs photometric vs combined

A launch monitor measures what happens at and just after impact: ball speed, carry, and — on better units — spin and club data. Two technologies dominate. Radar (Doppler) tracks the ball through the air; it's brilliant outdoors and at the range where shots have room to fly, but it needs space behind the ball and a few metres of flight to read confidently. Photometric units use high-speed cameras to read the ball and club at the moment of impact, which is why they shine indoors in tight spaces — a SkyTrak+ works with as little as a couple of metres of hitting room. The newest devices blend both: the SkyTrak+ now pairs its camera with dual Doppler radar, and the Rapsodo MLM2 Pro marries radar with two cameras to capture genuine spin rather than an estimate. Match the tech to your space: radar for outdoor and range, camera or combined for a tight indoor bay.

Measured spin vs calculated spin

This is the distinction that separates the tiers, and it's worth understanding before you spend. Cheaper radar units like the LM1 calculate spin from a model rather than measuring it directly — fine as a directional guide, not a fitting number. Camera and combined units (the MLM2 Pro, the SkyTrak+) measure spin rate and axis off the actual ball, which is what you need for serious club fitting and convincing indoor flight. If someone quotes you spin numbers, the first question is always: measured or modelled?

The numbers that matter

In rough order of usefulness for an improving golfer: carry distance (for gapping your bag), ball speed and clubhead speed (for tracking whether a change adds power), then spin, launch angle, club path and face angle (for dialling flight and fitting). The Garmin R10 alone reads 14+ metrics; the MLM2 Pro tracks 13 including spin axis. But more metrics aren't automatically better — cheaper units nail the first group reliably, and most golfers improve most from accurate carry numbers alone. Be ruthlessly honest about which numbers you'll genuinely act on.

Two metrics are worth understanding because they're easy to misread. Smash factor is simply ball speed divided by clubhead speed — a measure of strike efficiency, where about 1.50 is the practical ceiling with a driver; chasing a higher number is usually a sign of bad data rather than a better swing. And spin axis (which the better units report) is what actually decides whether your ball draws or fades, where raw 'spin rate' alone won't tell you which way the ball curves. Knowing what each number means stops you over-reacting to one bad reading — the most common way golfers misuse a launch monitor is treating a single noisy shot as gospel rather than watching the trend across a session.

The budget tiers (and the subscription trap)

Entry devices like the LM1 (~$250) give trustworthy distance and speed for practice and gapping, with a screen on the unit and no fees. Value all-rounders like the R10 (~$650) add app simulator play and on-course tracking. The MLM2 Pro (~$700) steps up to cameras, synced swing video and better sims. At the top, photometric units like the SkyTrak+ (~$2,900) deliver the accuracy a serious sim or fitting setup needs. One thing to budget beyond the box: most mid and premium units gate their best courses and game modes behind a paid annual subscription — true of the MLM2 Pro and SkyTrak+ both. We rank the sub-$1,000 field in best launch monitor under $1,000.

Accuracy: what each tier can actually be trusted for

Accuracy isn't a single number — it depends on which metric and where you're hitting. Entry radar units are trustworthy on full-swing speed and carry outdoors, looser on partial wedges and unreliable on spin. Combined units like the MLM2 Pro tighten spin and short-game numbers because the cameras read the ball directly. Photometric units like the SkyTrak+ are the most consistent indoors and shot-to-shot, which is the whole point of paying for one — though even there, driver figures indoors are the toughest ask, and most photometric units are an iron-and-wedge weapon first. The rule of thumb: every unit is most accurate at the job it was designed for, and least accurate when you push it into the wrong environment.

Match the unit to your real situation

Be honest about your space and goal. A garden, a range and a desire for carry numbers? Entry radar, hitting real balls into open air. A spare room with a few metres of depth and an appetite for video coaching? The mid tier earns its keep. A tight garage with low ceilings where you want winter rounds that feel real? That's exactly the case for a photometric unit, which reads in minimal space where radar can't. The mistake almost everyone makes is buying for the fantasy setup rather than the room they actually have — measure the space first, then choose the tech.

Where to jump in

It depends on the dream. Just want honest practice data and real carry numbers? Start at the entry tier — it's transformative for the money, and a cheap unit may help your game more than any new club. Want video feedback and the occasional sim round? The mid tier is your sweet spot (our MLM2 Pro review makes the case). Want to play Pebble in the garage all winter? Budget for the premium tier plus a proper hitting space — our SkyTrak+ review and our guide to building a garage simulator cover what that really takes. Don't overbuy precision you won't use; don't underbuy if simulator golf is the genuine goal. If you'd like the decision made for you, our Launch Monitor Finder matches your space, goal and budget to the right unit in three questions.