Seeing different numbers indoors vs outdoors is normal—it’s almost always the environment, not the launch monitor.

What changes between indoors and outdoors

• Ball type and condition (range balls vs premium; worn balls = inconsistent)

• Range slope (device assumes flat carry; uphill/downhill ranges fool the eye)

• Wind aloft (real outdoor carry changes; device’s carry reading does not)

• Swing differences (most golfers swing a bit different indoors; driver shows it most)

Step 1: Control the ball variable

• Use the same ball model in and out (avoid range balls for comparisons)

• Retire scuffed/softened balls; use fresh balls for testing

Step 2: Normalize the environment

• Compare against flat-plane carry (don’t judge by uphill/downhill range visuals)

• Note wind; strong tail/headwinds will change outdoor carry vs the device’s carry

Step 3: If launch angle looks off indoors (GC3 / GC3s / Launch Pro only)

• GC3 / GC3s / Launch Pro (LP): Settings → Diagnostics → Sensors → Accelerometer calibration (calibrate on your hitting mat).

• LPi: No onboard screen; skip this step. Standardize setup as above.

• GCQuad / QuadMax: No user calibration required—skip this step. Just confirm the unit is level and on a stable, non-flexing surface.

Notes

• Driver shows the biggest indoor/outdoor differences for most users

• Variance is environmental/behavioral—not a sign the device is less accurate indoors

• GCQuad / QuadMax use a more sophisticated inertial sensor and do not require user calibration.

FAQs

Why do driver numbers differ more than irons?

• Small changes in launch/spin get amplified at higher ball speeds

• Many golfers swing differently indoors; driver shows it most

• Range balls vs premium balls exaggerate differences

Is the device less accurate indoors?

• No. The environment changes the result, not the device’s measurement

• After standardizing setup, if big deltas remain, recalibrate level/accelerometer (GC3/GC3s/LP Only) and retest

My range is uphill/downhill—why does carry look off?

• The device reports flat-plane carry. Uphill/downhill ranges make “eyeball carry” look longer/shorter

Do range balls change the data?

• Yes. They often spin/launch differently and can be worn out. Use the same premium model for comparisons

Does wind affect numbers?

• Real outdoor carry changes with wind; device carry does not. Note wind when comparing to outdoor shots

Can the hitting mat cause missed reads or odd numbers?

• Yes. Unsecured/light mats can ripple or nudge the ball out of the capture zone. Secure the mat and place the ball fully in the hitting area

What should I standardize before comparing?

• Same ball model/condition

• Same target line and device position

• Consistent lighting (no harsh backlight/moving shadows)

• If using sim, align units/elevation/temperature settings across sessions

When should I recalibrate or contact Support?

• After standardizing, if ball speed is off by ~3–5 mph or carry by ~10–15 yards (irons) in calm conditions

• Recalibrate level/accelerometer on the hitting surface, then retest. If still off, submit a request with screenshots and ball details

Can I calibrate on LPi?

• No. LPi has no onboard screen. Standardize the environment first; if numbers still look off, contact Support with screenshots and details.

Do I need to calibrate GCQuad or QuadMax?

• No. There’s no user calibration. If numbers still look off after standardizing environment and setup, contact Support with screenshots and details.

Still need help?
Submit a request with: device model, ball type, screenshots (indoor vs outdoor), and whether the range is uphill/downhill.