Every launch monitor hands you a screen full of numbers and tells you nothing about where they came from. Some were measured by a sensor. Some were computed from numbers that were measured. Some were estimated by an algorithm that never saw the thing it is reporting. And some are just the simulator drawing a ball flight. Pick your setup below and find out which is which, so you know what you are allowed to coach off and what is a hint at best.
Every claim on this page cites the maker's own page. Where a maker publishes no accuracy figure we say so rather than borrowing somebody else's test, and where their own sources contradict each other we print the contradiction instead of picking a side.
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The picker above is the fast way. Below is the same information as ordinary text, one section per device, for anyone who would rather read than click.
Almost everything is measured. Trackman publishes no accuracy numbers at all, and indoors the radar only sees part of the flight.
Sensor: Doppler radar plus a camera. Answers below assume outdoors, full flight. Claims last checked against the maker's own pages in August 2026.
Coach off these: Ball speed, Club speed, Smash factor, Launch angle, Launch direction, Back spin, Spin axis, Carry, Apex height, Descent angle, Club path, Face angle, Face to path, Attack angle, Dynamic loft, Strike location
Hints only: Total distance
Not available: nothing
Trackman 4 publishes no accuracy figures for these numbers. That is not an oversight on our side: we looked, and the maker states none.
Sources: Trackman Data Parameter Definitions, Trackman 4 Launch Monitor, Understanding Trackman 4 Radar Data Indoors vs Outdoors, Trackman: What is OERT
Launch and club delivery are measured. Everything downrange is a model, because the unit is built for indoor spaces where the ball never finishes its flight.
Sensor: Radar plus dual high speed cameras, indoor only. Answers below assume indoors. Claims last checked against the maker's own pages in August 2026.
Coach off these: Ball speed, Club speed, Smash factor, Launch angle, Launch direction, Back spin, Spin axis, Club path, Face angle, Face to path, Attack angle, Dynamic loft, Strike location
Hints only: Carry, Total distance, Apex height, Descent angle
Not available: nothing
Trackman iO publishes no accuracy figures for these numbers. That is not an oversight on our side: we looked, and the maker states none.
Sources: Trackman Data Parameter Definitions, Trackman 4 Launch Monitor, Trackman FAQ: Trackman iO, Understanding Trackman 4 Radar Data Indoors vs Outdoors, Trackman: What is OERT, Trackman 4 and Trackman iO Technical Specifications
Ball launch is measured off any ball. Every distance on the screen is a flight model, which Foresight states in its own guide.
Sensor: Four camera photometric. Answers below assume no club markers, ball data only. Claims last checked against the maker's own pages in August 2026.
Coach off these: Ball speed, Launch angle, Launch direction, Back spin, Spin axis
Hints only: Carry, Total distance, Apex height, Descent angle
Not available: Club speed, Smash factor, Club path, Face angle, Face to path, Attack angle, Dynamic loft, Strike location
Foresight GCQuad publishes no accuracy figures for these numbers. That is not an oversight on our side: we looked, and the maker states none.
Sources disagree, so we are not picking a side: Foresight’s own sources disagree on what a single club marker gives you. The GCQuad manual lists club speed, smash factor, attack angle, and club path in the one marker set, while the current support article says one dot returns club head speed and smash factor only. We are not picking a side. Check what your unit actually reports.
Sources: What We Measure, Foresight Sports, An Introduction to Understanding Ball Launch and Club Data (Foresight Sports), GCQuad User Guide, Troubleshooting Club Data and Marker Detection on Foresight Sports Launch Monitors
Ball data is as good as the GCQuad. There is no face angle at any price, so a face to path story is not available on this unit.
Sensor: Three camera photometric. Answers below assume no club marker, ball data only. Claims last checked against the maker's own pages in August 2026.
Coach off these: Ball speed, Launch angle, Launch direction, Back spin, Spin axis
Hints only: Carry, Total distance, Apex height, Descent angle
Not available: Club speed, Smash factor, Club path, Face angle, Face to path, Attack angle, Dynamic loft, Strike location
Foresight GC3 publishes no accuracy figures for these numbers. That is not an oversight on our side: we looked, and the maker states none.
Sources disagree, so we are not picking a side: Foresight’s own sources disagree on what a single club marker gives you. The GCQuad manual lists club speed, smash factor, attack angle, and club path in the one marker set, while the current support article says one dot returns club head speed and smash factor only. We are not picking a side. Check what your unit actually reports.
Sources: What We Measure, Foresight Sports, An Introduction to Understanding Ball Launch and Club Data (Foresight Sports), GCQuad User Guide, Troubleshooting Club Data and Marker Detection on Foresight Sports Launch Monitors, GC3 Launch Monitor, Foresight Sports
The hardware can read your club, but only on a paid plan. The free tier is ball data only.
Sensor: Three camera photometric, the GC3 hardware family. Answers below assume no club marker, or the free plan. Claims last checked against the maker's own pages in August 2026.
Coach off these: Ball speed, Launch angle, Launch direction, Back spin, Spin axis
Hints only: Carry, Total distance, Apex height, Descent angle
Not available: Club speed, Smash factor, Club path, Face angle, Face to path, Attack angle, Dynamic loft, Strike location
Bushnell Launch Pro publishes no accuracy figures for these numbers. That is not an oversight on our side: we looked, and the maker states none.
Sources disagree, so we are not picking a side: Foresight’s own sources disagree on what a single club marker returns, exactly as they do for the GC3. The GCQuad manual lists club speed, smash factor, attack angle and club path in the one marker set, while the current support article says one dot returns club head speed and smash factor only. We are not picking a side. Check what your unit actually reports.
Sources: What We Measure, Foresight Sports, An Introduction to Understanding Ball Launch and Club Data (Foresight Sports), GCQuad User Guide, Troubleshooting Club Data and Marker Detection on Foresight Sports Launch Monitors, GC3 Launch Monitor, Foresight Sports
Spin comes off any ball with nothing drawn on it. Full club delivery, including face angle, needs stickers on the club face.
Sensor: Overhead dual high speed cameras. Answers below assume no club stickers, ball data only. Claims last checked against the maker's own pages in August 2026.
Coach off these: Ball speed, Launch angle, Launch direction, Back spin, Spin axis
Hints only: Carry, Total distance, Apex height, Descent angle
Not available: Club speed, Smash factor, Club path, Face angle, Face to path, Attack angle, Dynamic loft, Strike location
Uneekor EYE XO and EYE XO2 publishes no accuracy figures for these numbers. That is not an oversight on our side: we looked, and the maker states none.
Sources: EYE XO Launch Monitor, Uneekor, EYE XO2 Launch Monitor, Uneekor
Four club numbers with stickers on, and no face angle at all. Any ball, nothing drawn on it.
Sensor: Floor standing dual high speed cameras. Answers below assume no club stickers, ball data only. Claims last checked against the maker's own pages in August 2026.
Coach off these: Ball speed, Launch angle, Launch direction, Back spin, Spin axis
Hints only: Carry, Total distance, Apex height, Descent angle
Not available: Club speed, Smash factor, Club path, Face angle, Face to path, Attack angle, Dynamic loft, Strike location
Uneekor EYE MINI publishes no accuracy figures for these numbers. That is not an oversight on our side: we looked, and the maker states none.
Sources: Uneekor EYE MINI Product Guide, What are the technical specifications for Uneekor EYE MINI?
Not a ball only unit. With the stickers on it measures club speed, attack angle, and club path. It has no face angle, so nobody can read a face to path story off it.
Sensor: Floor standing dual high speed cameras, indoor use. Answers below assume no club stickers, ball data only. Claims last checked against the maker's own pages in August 2026.
Coach off these: Ball speed, Launch angle, Launch direction, Back spin, Spin axis
Hints only: Carry, Total distance, Apex height, Descent angle
Not available: Club speed, Smash factor, Club path, Face angle, Face to path, Attack angle, Dynamic loft, Strike location
Uneekor EYE MINI LITE publishes no accuracy figures for these numbers. That is not an oversight on our side: we looked, and the maker states none.
Sources: Uneekor EYE MINI LITE Overview, What are the technical specifications for Uneekor EYE MINI LITE?
Five ball numbers are genuinely measured. The club speed is worked back from the ball, so the smash factor is an estimate built on an estimate.
Sensor: Photometric camera. Answers below assume standard setup. Claims last checked against the maker's own pages in August 2026.
Coach off these: Ball speed, Launch angle, Launch direction, Back spin, Spin axis
Hints only: Club speed, Smash factor, Carry, Total distance, Apex height, Descent angle
Not available: Club path, Face angle, Face to path, Attack angle, Dynamic loft, Strike location
SkyTrak, the original publishes no accuracy figures for these numbers. That is not an oversight on our side: we looked, and the maker states none.
Sources: Frequently Asked Questions About The SkyTrak Launch Monitor, SkyTrak+ Golf Launch Monitor, Skytrak Data, What Data does Skytrak Measure?, My Golf Simulator (third party), SkyTrak Tips for Use Guide
The added radar turns club speed from a guess into a measurement, and brings path and face angle with it.
Sensor: Photometric camera plus dual Doppler radar. Answers below assume standard setup. Claims last checked against the maker's own pages in August 2026.
Coach off these: Ball speed, Club speed, Smash factor, Launch angle, Launch direction, Back spin, Spin axis, Club path, Face angle, Face to path
Hints only: Carry, Total distance, Apex height, Descent angle
Not available: Attack angle, Dynamic loft, Strike location
SkyTrak+ publishes no accuracy figures for these numbers. That is not an oversight on our side: we looked, and the maker states none.
Sources: Frequently Asked Questions About The SkyTrak Launch Monitor, SkyTrak+ Golf Launch Monitor, SkyTrak Launch Monitor Technology, SkyTrak Tips for Use Guide, Skytrak Data, What Data does Skytrak Measure?, My Golf Simulator (third party)
Indoors your spin number depends entirely on whether you put stickers on the ball. Without them it is a model, and FlightScope says so.
Sensor: Doppler radar with synchronized image processing. Answers below assume indoors, nothing on the ball. Claims last checked against the maker's own pages in August 2026.
Coach off these: Ball speed, Club speed, Smash factor, Launch angle, Launch direction, Attack angle
Hints only: Back spin, Spin axis, Carry, Total distance, Apex height
Not available: Descent angle, Club path, Face angle, Face to path, Dynamic loft, Strike location
FlightScope Mevo+ publishes no accuracy figures for these numbers. That is not an oversight on our side: we looked, and the maker states none.
Sources: FlightScope Data Explained: Mevo Data Parameters, FlightScope Mevo and Mevo+ FAQ, FlightScope Mevo+ Golf Launch Monitor, FlightScope Pro Package
The only maker here that publishes real accuracy numbers. Indoors your spin is always a machine learned estimate, and Garmin says so plainly.
Sensor: Doppler radar. Answers below assume indoors, or outdoors into a net. Claims last checked against the maker's own pages in August 2026.
Coach off these: Ball speed, Club speed, Smash factor, Launch angle, Launch direction
Hints only: Back spin, Spin axis, Carry, Total distance, Apex height, Club path, Face angle, Face to path, Attack angle
Not available: Descent angle, Dynamic loft, Strike location
Published by the maker: Ball speed ±1 mph; Club speed ±3 mph; Launch angle ±1°; Launch direction ±1°; Carry ±5 yd; Apex height ±5 ft; Face angle ±2°.
Sources: Accuracy of Approach R10 Radar, Swing Metrics Displayed in Driving Range Mode in the Garmin Golf App, Garmin R10 Accuracy, My Golf Simulator (third party)
Spin exists only with the special marked balls. Rapsodo is refreshingly honest here: with a normal ball the number is absent rather than faked.
Sensor: Two cameras plus Doppler radar. Answers below assume an ordinary golf ball. Claims last checked against the maker's own pages in August 2026.
Coach off these: Ball speed, Club speed, Smash factor, Launch angle, Launch direction
Hints only: Carry, Total distance, Apex height, Descent angle
Not available: Back spin, Spin axis, Club path, Face angle, Face to path, Attack angle, Dynamic loft, Strike location
Rapsodo MLM2PRO publishes no accuracy figures for these numbers. That is not an oversight on our side: we looked, and the maker states none.
Sources: Rapsodo MLM2PRO Mobile Launch Monitor and Golf Simulator, Frequently Asked Golf Questions, Rapsodo, Rapsodo Golf MLM2PRO Premium Membership
The only maker here that documents the split itself: the ball numbers are measured, the flight is simulated from them, and the club numbers are tracked with virtual stickers instead of real ones.
Sensor: Overhead high speed cameras. Answers below assume standard setup. Claims last checked against the maker's own pages in August 2026.
Coach off these: Ball speed, Club speed, Launch angle, Launch direction, Back spin, Spin axis, Club path, Face angle, Face to path, Attack angle, Dynamic loft, Strike location
Hints only: Carry, Total distance, Apex height, Descent angle
Not available: Smash factor
ProTee VX publishes no accuracy figures for these numbers. That is not an oversight on our side: we looked, and the maker states none.
Sources: The power of ProTee VX, ProTee VX Artificial Intelligence, How does the ProTee VX measure ball and club data?
GSPro measures nothing at all. Every launch number on screen came from your launch monitor, and every distance is GSPro’s own physics.
Sensor: Simulator software. It has no sensors and measures nothing.. Answers below assume software only. Claims last checked against the maker's own pages in August 2026.
Coach off these: nothing
Hints only: Carry, Total distance, Apex height, Descent angle
Not available: Ball speed, Club speed, Smash factor, Launch angle, Launch direction, Back spin, Spin axis, Club path, Face angle, Face to path, Attack angle, Dynamic loft, Strike location
GSPro, with no launch monitor selected publishes no accuracy figures for these numbers. That is not an oversight on our side: we looked, and the maker states none.
Sources: GSPro Open Connect v1 Documentation, GSPro
A benchmark is only worth comparing against a number that was actually observed. Grade an estimated spin figure against a well struck window and you have graded the vendor's algorithm, not your swing. That is why the free decode tool asks which launch monitor you used, and refuses to put a verdict on a number your device only modelled. It is the same rule a coach should follow: know what the data can see before you tell somebody what to fix.
See what a coach with memory does with your numbers
Indoors, no. Garmin states that indoor spin is calculated with a machine learned model that takes the measured radar numbers as inputs, and the Garmin Golf app shows an estimated spin rate in italics. Outdoors it can measure spin from the observed flight, but only when it sees at least 20 m of flight and the ball speed is above 90 mph. Hitting into a net outdoors falls back to the indoor calculation. Garmin is also the only maker on this page that publishes real accuracy figures: ball speed to 1 mph, club speed to 3 mph, launch angle and direction to 1 degree, club face to 2 degrees, carry to 5 yards, apex to 5 feet.
Yes, four club numbers, and it needs the club stickers that ship in the box. Uneekor's own spec sheet lists club speed, attack angle, smash factor, and club path. It does not list face angle, dynamic loft, face to path, or a numeric impact point at any setting, so nobody can read a face to path story off this unit. Spin is read optically off the dimples of any ball, with nothing drawn on it.
Usually because one of them measured it and the other estimated it. A camera unit reads spin off the ball itself. A radar unit needs enough flight to watch, which is why an indoor radar wants metal dot stickers or an RCT ball before its spin number means anything. Some devices will not show spin at all without a marked ball, which is the honest behaviour. Before you compare two numbers, check whether they are the same kind of number.
No. GSPro is simulator software with no sensors. Every launch number on screen came from your launch monitor through the Open Connect interface, and every distance on screen is GSPro flying the ball with its own physics from those launch numbers. So your launch numbers are only as good as your device, and your carry number is a GSPro model either way.
Because the makers do not publish them. We only print an accuracy figure when the maker states one, and we will not fill the gap with somebody else's test result dressed up as a specification. Of every device here, only Garmin publishes a real per metric tolerance set. Trackman, Foresight, Uneekor, SkyTrak, FlightScope and ProTee publish none. Rapsodo and SkyTrak publish comparative marketing claims instead, which we label as exactly that.