It can. The product team chooses where the scan sits, at onboarding or at the first check-in. The pilot compares onboarding completion with the usual flow and measures scan completion separately.
FitXpress for Connected and Digital Fitness
A mobile gym body scanner alternative for fitness apps
Give members a clearer view of body progress at each check-in. FitXpress returns 80+ body measurements and body composition estimates from two guided smartphone photos, with results in under 45 seconds after capture.
- 2 smartphone photos
- No integration fee plans from $1,000 a month
- 45sec from scan to results
100+ clients have used 3DLOOK body scanning since 2016, including fitness teams.
For Members
Body data for member check-ins
Compare body measurements and body composition estimates between check-ins.
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Changes beyond
total body weightDisplay waist measurements and fat and lean mass estimates alongside entered weight.
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Progress kept
in your appProvide a structured record alongside progress photos inside your app.
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Features for your
premium tierOffer 3D progress tracking and goal visualization within your premium tier.
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Programs built
on body dataCoaches can use scan results alongside the member's goals when reviewing the program.
Body data in fitness apps, in depth: AI in fitness →
The Problem
Why do fitness apps lose members before the program shows results?
- 24% → 7% of health and fitness app users are active on day 1; 7% are still active on day 30. Adjust, mobile app retention benchmarks
- 70% median share of users who quit lifestyle and mental health apps within 100 days; lack of personalization was among the reasons. Kidman et al., "When and Why Adults Abandon Lifestyle Behavior and Mental Health Mobile Apps", Journal of Medical Internet Research
For an app, each user lost in the first month is a cost that it does not recoup.
How It Works
The scan runs inside check-ins the program already has
A connected-fitness platform, workout app or coaching app embeds FitXpress through web and mobile software development kits (SDKs), including supported iOS and Android integrations.
1
Scan at onboarding
or check-in
The scan runs on the member’s own phone, with no hardware and no club visit, and the consent screen uses the platform’s own wording.
2
Real-Time Pose Validation (RTPV) guides the capture
It gives pose and framing guidance during capture, with voice prompts for a member scanning alone.
3
The progress screen
shows the change
FitXpress returns the record through its application programming interface (API), and the platform links each scan ID to the member profile. In online coaching apps, the coach reviews the same record before setting the next program block.
Recommended setup: the SDK together with the API, because pose and framing validation runs in the SDK’s capture layer.
The Scan Record
Each scan reveals changes beyond weight
FitXpress returns one timestamped record per scan, and the platform chooses what the member and the coach see.
3D progress tools
On the FitXpress Pro plan: 3D Body Progress tracking and 3D Goal Visualization
Body composition estimates
body-fat percentage, lean mass and fat mass
BMI and BMR
Calculated metrics based on the member’s scan inputs.
80+
Measurements
Including waist, hip, chest, thigh and calf
Status & timestamps
Each scan record includes processing status and a timestamp for comparison.
- Scan uploaded Aug 18, 10:24:05 AM
- Processing scan Aug 18, 10:24:15 AM
- Results ready Aug 18, 10:24:35 AM
FitXpress is not a medical device. It provides structured body data for coaching and program workflows.
See a sample record in the demoComparison
FitXpress compared with progress photos, scanning apps and an in-gym body scanner
| FitXpress | Weight log and progress photos | Standalone scanning app | In-gym body scanner | |
|---|---|---|---|---|
| Where it happens |
On the member’s phone, within the platform’s app. |
At home | In a separate app | At the device, in the club |
| What it records |
80+ body measurements and body composition estimates |
Weight; the photos are not measured |
Depends on the app |
Depends on the device |
| Brand the member sees |
The platform’s (white-label) |
The platform’s | The scanning app’s |
The device maker’s |
| Data back to the platform |
A structured record through the API |
Self-reported weight |
Depends on the app |
Depends on the device |
For a fitness app, the difference is ownership: with FitXpress, the scan and its record stay inside the platform, under its brand. An in-gym scanner still suits members who visit the club; FitXpress covers the check-ins between visits.
Proof and Data Handling
How accurate is FitXpress, and how is member data handled?
For progress tracking, consistency matters. Repeated scans typically differ by less than 1 cm for most evaluated measurements, making it possible to track changes against each member’s previous scans.
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< 1cm
typical scan-to-scan
difference for most
measurements -
96-97%
accuracy against expert manual
measurement, typical absolute error 1.5-2.0 cm
These figures come from internal validation of body measurements. Body composition values are estimates derived from the measurements with height and, where provided, weight. Peer review and third-party clinical certification are not part of that record, and the full methodology is available under a non-disclosure agreement (NDA).
Body scanning accuracy: an enterprise framework →Photos
Photos are deleted after processing or retained for up to 30 days under the customer's policy, with blurring and face obfuscation.
Identifiers
Each scan uses a randomly generated, anonymized identifier instead of directly identifying the member whose body data is processed.
GDPR
In most enterprise deployments, the customer acts as data controller and 3DLOOK as data processor, depending on the processing arrangement.
Encryption
Data is encrypted both during transmission and while stored, helping protect member information throughout processing and storage.
Training
Production customer data is not used for model training unless the customer provides explicit, documented authorization for that purpose.
See the Data, Privacy, Security & Regulatory FAQ
for hosting, System and Organization Controls 2 (SOC 2) and U.S. Food and Drug Administration (FDA) information.
Privacy contact:
privacy@3dlook.me
Pilot
Start with a member cohort, then scale on a fixed monthly plan
A pilot measures the effect on retention before a full release. FitXpress runs on production infrastructure already deployed in remote weight-management and BMI-verification workflows.
Starter
$1,000 / month
for up to 500 API requests
Pro
$1,500 / month
for up to 1,000 API requests
- 3D Body Progress tracking
- 3D Goal Visualization
Both include guided implementation support, with no integration fee. Custom plans cover higher volumes.
See pricing →-
1
Walkthrough
3DLOOK shows the member flow on a phone, a sample record and the integration pattern for the app.
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2
Pilot cohort
One cohort scans at onboarding and the first check-in; a comparable cohort keeps the usual check-in flow. Where practical, members are assigned randomly before the pilot.
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3
Evaluate and roll out
Outcomes are measured against criteria agreed before the pilot. If they are met, the scan goes live for all members on the matching plan.
3DLOOK and the platform track:
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Scan completion and retake rates
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Repeat scans at the first check-in
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Day-30 and day-90 retention against the comparison cohort
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Free-to-premium conversion where 3D progress sits in the paid tier
FAQ
Frequently asked questions
Data storage, retention, HIPAA, GDPR and security audits are covered in full in the Data, Privacy, Security & Regulatory FAQ.
General Questions
Will adding a scan step reduce onboarding completion?
What is a body scan at the gym?
A body scan at the gym is a measurement taken on hardware in the club, such as a 3D camera booth or a bioelectrical impedance platform. Each repeat needs a club visit. FitXpress measures on the member’s own phone instead.
What body scanning SDKs work for fitness apps with remote users?
FitXpress offers web and mobile SDKs built for members who scan at home on their own phones. The platform designs the onboarding, consent and results screens; the photo-capture layer, where pose validation runs, stays fixed to protect measurement quality.
How are results delivered?
Results are retrieved through the FitXpress API. The response contains structured body data, processing status and timestamps. Integration details are covered in the FitXpress API documentation.
How often should members scan?
Members scan at each progress check-in the program already runs. Consistent conditions matter more than frequency: form-fitting clothing, the same place and the phone on a stable surface each time.
Does the data sync to Apple Health or Health Connect?
The platform’s own team builds and controls any sync to Apple Health or Health Connect. FitXpress returns structured data to the platform through the API. The integration depends on the fields and permissions supported by the destination platform.
Last updated: November 2026