ShapeScale vs Styku, InBody 580, Evolt 360, and Fit3D
In a same-day test against DEXA, ShapeScale's body fat readings landed within 0.2 points for both founders tested, versus 5.9 for Styku, 4.4 for Evolt 360, and 2.1 for InBody 580. Fit3D was not tested.
My previous scanner got less specific as patients got healthier. ShapeScale's body-composition analysis is far more accurate, and the images are photographic versus Styku, which looks like a gray blob. I depend on it every day to provide precision medical care.
“Visible, tangible, undeniable proof.”
ShapeScale provides a visible, tangible, absolutely undeniable metric of proof, and it quantifies into a dollar amount from the patient's investment. Styku felt underwhelming, clients said the avatar didn't look like them. ShapeScale actually looks like you.
“Fit3D was too big and imprecise. This isn't.”
Fit3D was too big and imprecise. ShapeScale gives us the precise measurements we need, and clients line up to use it again. We run ads with discounted scans to bring people in, and it opens them to our other services.
“Currently the best thing on the market.”
ShapeScale is currently the best thing on the market because it doesn't just take measurements, it gives images that are relatable rather than a printout of numbers most of us aren't going to look at. It helps with retention, the people interested in this data are in it for the long term.
“A differentiator no one else in our area offers.”
This is a big tool, a differentiator that no one else in our area offers. The ability to quantify outcomes and show patients objective measurement changes, and the ability to close consults, has been better since instituting ShapeScale.
“Manual measurements are full of human error. This isn't.”
Manual measurements are less efficient, less consistent, less accurate, and more intrusive. ShapeScale is easier, more comfortable for clients, and eliminates human error. New clients get a baseline automatically, and existing clients keep seeing progress.
Trusted by 1,000+ locations
Y Combinator Summer 2015 Red Dot Award Winner 2025 Good Design Award Winner 2024
~10× closer to DEXA.
ShapeScale averages 0.2 points from DEXA — ~10× closer than the next-best device (InBody 580 at 2.1 points).
In a same-day, back-to-back comparison against DEXA, ShapeScale was the only device to land close to the reference body fat % for both participants, making it the most accurate against the gold standard.
ShapeScale0.2 pt avg. deviation
Styku5.9 pt avg. deviation
InBody 5802.1 pt avg. deviation
Evolt 3604.4 pt avg. deviation
DEXA-referenced body fat % by participant, same day, back to back
Participant
GE Lunar iDXA (reference)
ShapeScale
Styku
InBody 580
Evolt 360
Alex ShapeScale co-founder
10.1%
10.3%Closest to DEXA for Alex +0.2 pt
17.8% +7.7 pt
9.1% -1.0 pt
5.7% -4.4 pt
Martin ShapeScale co-founder
16.7%
16.9%Closest to DEXA for Martin +0.2 pt
20.7% +4.0 pt
13.6% -3.1 pt
—No reading taken
Evolt 360's average uses one participant; no reading was taken for Martin.
Fit3D was not part of this same-day test.
Alex and Martin, the two participants in this test, are ShapeScale's co-founders.
A note on scope: this comparison covers two people, which is not a statistically significant sample, and we don't present it as a clinical validation. We ran it to compare every scanner directly: same people, back to back, same day, same body conditions.
Eight ways the devices differ
ShapeScale compared with Styku, InBody 580, Evolt 360, Fit3D across eight criteria
Criterion
RecommendedShapeScale
Styku
InBody 580
Evolt 360
Fit3D
01.Client experience of the scan
Under a minute. The sensors rotate while the client stands still: no balance risk or dizziness. Facial recognition auto check-in.
30–40 seconds on a turntable (Styku spec sheet). The client rotates, so swaying or losing balance is a risk.
Fast BIA read; reliability affected by food, hydration, and exercise.
Fast BIA read; reliability affected by food, hydration, and exercise.
Scan duration not published by Fit3D. The member stands at shoulder-width and rotates themselves through a 360° turn in front of the tablet, with camera height, distance, and lighting kept consistent (fit3d.com/snap-3d-body-scanner, checked 2026-11-13).
02.Visual output
Photorealistic 3D scan (with a high-quality monochrome option); single and before-and-after views; color-coded heatmaps.
Low-quality monochrome 3D scan; single and before-and-after views.
None; numeric printout only.
None; numeric dashboard with gamified badges.
3D scan captured on a compatible tablet; results viewed through online web dashboards and a cloud facility dashboard (fit3d.com/snap-3d-body-scanner and fit3d.com/snap-service, checked 2026-11-13).
03.What the device measures
Body weight
BMI
BMR
Body fat % & mass
Visceral fat (lbs)
Lean mass
Lean Mass Index
Appendicular Lean Mass (arms & legs)
Circumferences
Regional volumes, including separate upper-arm and forearm volumes
Shape Score
Health Score
Styku · 14 metrics
BMI
BMR
Body fat % & mass
Visceral fat (lbs & in²)
Subcutaneous fat
Android & gynoid fat
Lean mass
Segmental lean mass
ALM & ALSTI
Bone mass
Circumferences
Total & regional volumes
Posture/silhouette analysis
Shape Score
InBody 580 · 14 metrics
BMI
BMR
Recommended calorie intake
Body fat % & mass
Visceral fat (in²)
Skeletal muscle mass
SMM/WT %
Segmental lean/fat (advanced models only)
FFMI
SMI (muscle strength)
Protein & mineral mass
Total body water
Phase angle
InBody Score
Evolt 360 · 14 metrics
BMI
BMR
TEE (energy expenditure)
Body fat % & mass
Visceral fat (lbs & in²)
Subcutaneous fat
Skeletal muscle mass
Segmental lean/fat
Protein & mineral mass
Total body water
Abdominal circumference
Waist-to-hip ratio
Bio Age
BWI® Score (out of 10)
Fit3D · 5 metrics
Fat mass
Lean mass
Visceral fat
Waist, chest & hip measurements
Posture (baseline)
04.Data presentation
Free mobile app with intuitive data and visual presentation that clients can understand on their own.
Health Screen results are sold as a paid in-app upgrade (styku.com/pricing). Needs staff interpretation due to too much data.
Dense numeric sheet; 5–10 minutes of staff interpretation per scan. Has an app, but it isn't user-friendly. Printouts need their proprietary paper.
Numeric dashboard plus badges; staff interpretation needed. Has an app, but it isn't user-friendly. Printouts need their proprietary paper.
Results delivered through online web dashboards and a cloud facility dashboard (fit3d.com/snap-3d-body-scanner and fit3d.com/snap-service, checked 2026-11-13).
05.Retention powerHigh
Clients rescan to see their photorealistic 3D scan change. High
A gray avatar isn't something clients look forward to seeing change. Moderate
Numbers alone rarely bring clients back. Low
Gamification helps; a leaderboard alone doesn't excite enough. Moderate
No retention data published by Fit3D. Results are delivered through online web dashboards (fit3d.com/snap-3d-body-scanner, checked 2026-11-13).
06.Shareability / marketing powerHigh
Photoreal scans plus high-res photo and video exports get shared on social: free marketing. High
Few clients post a gray avatar. Moderate
A sheet of numbers isn't shareable. None
Badges shared in-app, rarely outside it. Moderate
No sharing features described by Fit3D. Results are delivered through online web dashboards (fit3d.com/snap-3d-body-scanner, checked 2026-11-13).
07.Trust & perceived authority
Premium hardware, body fat within 1.89 points of DXA on average (March 2026 study, 1,000+ adults), operated with an iOS app.
Two-piece device, dated PC setup, low accuracy.
Trusted brand name, but low accuracy hinders trust.
Reads more like a wellness app than clinical; low accuracy.
App on a compatible tablet, no dedicated hardware; Fit3D claims its estimates land within 3–5% of DEXA (fit3d.com/snap-3d-body-scanner, checked 2026-11-13).
08.Pricing
$9,990 one-time, or $299/mo on the 12-Month Plan, or $199/mo billed annually; software included
$9,500 hardware one-time plus a $199/mo Access or $499/mo Elite software plan ($349/mo intro)
$17,115 plus result-sheet paper ($85 per 500 sheets)
$8,000 plus $200/mo software and result-sheet paper ($116 per 500 sheets)
as low as $83/month ($499 for 6 months); most subscriptions are month-to-month
What clients and staff actually see
Recommended
ShapeScale (mobile first)
ShapeScale's mobile app scan view: a photorealistic 3D scan, not a gray avatar.ShapeScale's app metrics dashboard, including the Health Score.ShapeScale's web report, with photoreal multi-angle scans and metric gauges.
1 / 3
Styku (desktop first)
Styku's desktop Summary Report, with a monochrome front and side avatar.Styku's mobile app Body Scan screen, showing the same monochrome avatar.
1 / 2
InBody 580 (print first)
InBody 580's result sheet: a dense numeric printout on proprietary paper.InBody's app Segmental Analysis screen.
1 / 2
Evolt 360 (print first)
Evolt 360's printed result sheet, with numeric data and a gamified BWI score.Evolt 360's app summary list screen.
1 / 2
Fit3D (mobile first)
SNAP results are delivered through online web dashboards and a cloud facility dashboard (fit3d.com/snap-3d-body-scanner and fit3d.com/snap-service, checked 2026-11-13). Generic illustration, not a Fit3D screenshot.
What's actually on the floor
Recommended 3D optical scan ShapeScaleA single-pedestal 3D optical scanner. The ring-lit sensor head rotates around a stationary client, so there is no turntable and no separate pieces to set up. Needs 5x5 ft floor space and a 7 ft minimum ceiling. 3D optical scan (turntable) StykuA two-piece 3D optical scanner. The client stands on a separate turntable and rotates in front of the pole-mounted sensor. Bioimpedance (BIA) InBody 580An upright bioimpedance (BIA) scale. The client holds hand electrodes while standing on foot electrodes; the device estimates composition from electrical resistance. Bioimpedance (BIA) Evolt 360An upright bioimpedance (BIA) scale. The client holds hand electrodes while standing on foot electrodes; the device estimates composition from electrical resistance. 3D optical scan (tablet app) Fit3DAn app-based scanner that runs on a compatible tablet — most Android tablets and iPads released in 2025 or later — on a magnetic wall mount (about $30) or a floor stand. Fit3D describes the footprint as minimal, with no published dimensions (fit3d.com/snap-3d-body-scanner and fit3d.com/snap-service, checked 2026-11-13). Fit3D's legacy ProScanner — 3 depth sensors, 166 lb, a 38" x 65" unit footprint, an integrated 4-point balance scale up to 400 lb on 110 V — is now labelled Legacy, with 6' x 9' recommended operating space (fit3d.com/3d-body-scanner, checked 2026-11-13).
Up close: built to sit out front
Close range, every angleThe arm circles your client at a steady 50 to 60 cm, so the whole body is captured from the same close distance.A scale built into the platformClients step on and stand still. Weight is recorded during the same scan, so there's no separate scale step.One sensor head, two kinds of visionInfrared depth sensors map body shape while a 12MP color camera captures a photorealistic model. Light only, no radiation.An arm that telescopes and foldsIt extends to each client's height, then folds down low when the scan is done. It needs about 5 ft of clear floor.
Switch path
Don't switch.Audition it.
Run it next to your current device during the 45-day return period. Keep whichever earns the room.
In a same-day test against the GE Lunar iDXA, ShapeScale averaged 0.2 points from the reference body fat %, versus 2.1 points for InBody 580, 4.4 points for Evolt 360, and 5.9 points for Styku — ~10× closer than the next-best device.
Who ran the DEXA accuracy test, and how?
Alex and Martin, the two participants in this test, are ShapeScale's co-founders. The test ran same day, back to back against a GE Lunar iDXA reference scan. A note on scope: this comparison covers two people, which is not a statistically significant sample, and we don't present it as a clinical validation. We ran it to compare every scanner directly: same people, back to back, same day, same body conditions.
How does ShapeScale's price compare to Styku, InBody 580, Evolt 360, and Fit3D?
ShapeScale is $9,990 one-time, or $299/mo on the 12-Month Plan, or $199/mo billed annually; software included (ShapeScale live pricing page, checked 2026-11-12). Styku is $9,500 hardware one-time plus a $199/mo Access or $499/mo Elite software plan ($349/mo intro) (styku.com/pricing, checked 2026-11-12). InBody 580 is $17,115 plus result-sheet paper ($85 per 500 sheets) (ShapeScale sales comparison research, checked 2026-10-15). Evolt 360 is $8,000 plus $200/mo software and result-sheet paper ($116 per 500 sheets) (ShapeScale sales comparison research, checked 2026-10-15). Fit3D is as low as $83/month ($499 for 6 months); most subscriptions are month-to-month (fit3d.com/snap-3d-body-scanner and fit3d.com/snap-service, checked 2026-11-13).
Is 3D optical scanning more accurate than bioimpedance (BIA) devices like InBody and Evolt 360?
In this test, ShapeScale's 3D optical scan averaged 0.2 points from DEXA, compared with 2.1 points for InBody 580 and 4.4 points for Evolt 360, both bioimpedance (BIA) devices.
What does each device measure, and what's the client experience like?
ShapeScale: Under a minute. The sensors rotate while the client stands still: no balance risk or dizziness. Facial recognition auto check-in. It measures Body weight, BMI, BMR, Body fat % & mass, Visceral fat (lbs), Lean mass, Lean Mass Index, Appendicular Lean Mass (arms & legs), Circumferences, Regional volumes, including separate upper-arm and forearm volumes, Shape Score, Health Score. Styku: 30–40 seconds on a turntable (Styku spec sheet). The client rotates, so swaying or losing balance is a risk. InBody 580 and Evolt 360 both use a fast BIA read. Fit3D: Scan duration not published by Fit3D. The member stands at shoulder-width and rotates themselves through a 360° turn in front of the tablet, with camera height, distance, and lighting kept consistent (fit3d.com/snap-3d-body-scanner, checked 2026-11-13).
Is this comparison a clinical validation?
A note on scope: this comparison covers two people, which is not a statistically significant sample, and we don't present it as a clinical validation. We ran it to compare every scanner directly: same people, back to back, same day, same body conditions.
More comparisons
ShapeScale is not affiliated with Styku, InBody, Evolt, or Fit3D. Styku, InBody, Evolt 360, and Fit3D are trademarks of their respective owners.
See it on your own data.
Book a 30-minute demo to see how ShapeScale fits your business, clients, and workflow.
Y Combinator Summer 2015 
Red Dot Award Winner 2025 
Good Design Award Winner 2024 
