Radar vs. Photometric Launch Monitors: Which Tracking Tech Should You Buy?

What each technology measures

Doppler radar units sit behind you and track the ball's flight through the air using reflected radio waves — the same principle as a police speed gun. They measure ball speed, launch angle, and spin directly from the ball's trajectory, which means they need real airborne flight distance to get a clean read. That's the "radar tax": in our data, behind-the-ball units average 14.8 ft of room depth versus 11.8 ft for side-mounted cameras.

Photometric (camera-based) units use one or more high-speed cameras — often paired with infrared — to photograph the ball and clubhead at the moment of impact. They don't need flight distance, which is why overhead and side-mounted camera units cluster at lower room depths regardless of price (see the price-vs-depth chart). The tradeoff: several photometric units need reflective stickers or marked balls to read spin accurately indoors — 8 of the 35 monitors in our database require them.

A handful of monitors — Rapsodo MLM2PRO, SkyTrak+/ST MAX, FlightScope's X-series — fuse both: radar for ball flight, camera for club data and impact. These "hybrid" units tend to sit in the budget-to-mid tier and are a reasonable way to get club data without paying for a full photometric rig.

Indoor spin accuracy — the honest caveat

Radar's biggest technical weak spot is indoor spin. Outdoors, a radar unit tracks a real ball flight over dozens of yards and gets a precise spin reading. Indoors, hitting into a net or screen a few feet away, radar units estimate spin from limited flight data — most of our budget radar entries flag spin as calculated or estimated rather than measured (see each monitor's spec table for the measured-vs-calculated breakdown). Photometric units generally measure spin directly off the ball's dimple pattern at impact, which is why serious indoor practice setups skew camera-based despite the higher price and stricter marked-ball requirements.

Price reality by technology

Radar and hybrid units dominate the budget-to-mid tier; pure photometric skews expensive. Among our verified entries, the cheapest of each category:

• Radar — PRGR Black Pocket ($199)
• Radar + camera hybrid — FlightScope Mevo Gen2 ($1,299)
• Photometric + radar hybrid — Rapsodo MLM2PRO ($600)
• Pure photometric — Bushnell LPi ($1,499)

Pure photometric units average roughly $6,400 across our catalog once you include GC3/GCQuad/QuadMAX-class professional units — the tech that needs the least room also costs the most.

Which should you buy?

• Tight room, budget flexible: lean photometric or overhead — check low-ceiling picks.
• Outdoor range use matters: radar and hybrid units dominate the portable/outdoor field — see outdoor & portable picks.
• Serious indoor spin data: budget for photometric or a hybrid — pure radar's indoor spin is an estimate, not a measurement.
• Entry-level budget: radar wins on price — everything under $1,000 is radar or hybrid tech.