# BackSCNR — Scoliosis Surface Topography

> Scoliosis screening and monitoring support tool using 3D surface topography. (iPhone/iPad app by BackSCNR Inc..)

- Source: https://appshunter.io/ios/app/backscnr/id1629230768 (this page in markdown: same URL + `.md`)
- Developer: [BackSCNR Inc.](https://appshunter.io/developer/1629230770)
- Category: Medical, Health & Fitness
- Price: Free
- Rating: 5.00/5 from 2 App Store ratings · 1 written reviews indexed
- Age rating: 17+
- Requires: iOS 15.4 · 42 MB
- Languages: American English
- Released: 2022-07-20
- Data updated: 2026-07-28
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/backscnr/id1629230768/reviews.md

## What is BackSCNR?

BackSCNR (Back Scanner) is a scoliosis screening and monitoring support tool designed to aid in the management of Adolescent Idiopathic Scoliosis (AIS). Using advanced Surface Topography (ST), the app provides a radiation-free and non-invasive way to assess the 3D shape of the human torso, offering a safe alternative for frequent monitoring without exposure to harmful X-rays.

Developed through years of leading academic research, BackSCNR is registered with Health Canada as a Class I Software as a Medical Device (SaMD). It is intended for use in individuals aged 10–18 years to assist clinicians in quantifying torso asymmetries and estimating curve angles associated with AIS.

Key Features:
- Flexible 3D Torso Capture: Capture high-accuracy 3D scans using either the Structure Sensor accessory or your iPhone’s built-in TrueDepth camera.
- Asymmetry Analysis: Aids in identifying and tracking torso asymmetries over time.
- Clinical Support: Provides detailed metrics, including estimated Cobb angles and deviation color maps, to support clinical decision-making.
- Rapid Results: Upload and process models to receive analysis within minutes on our secure web platform.

How it Works:
1. Select Your Hardware: The app automatically detects if a Structure Sensor is connected and will default to it for scanning. If no sensor is detected, the app defaults to the iPhone’s TrueDepth camera.
2. Capture the Scan: Follow the in-app guidance to take a 3D scan of the patient's torso.
3. Analyze & Report: Upload the data to the secure BackSCNR website for automated analysis and reporting.

Compatibility:
- TrueDepth:** Compatible with TrueDepth-enabled iPhones (iPhone X and newer).
- OS: Supported on modern iOS devices (iPhone X and later) and compatible iPads.
- Sensors: Optimized for Structure Sensor 3; also supports Mark II and Pro models.

For more details, visit https://backscnr.com

Disclaimer:
BackSCNR is intended to aid in the screening and management of postural conditions and is not a substitute for professional medical diagnosis or treatment planning. Always seek the advice of a physician or other qualified healthcare provider with any questions regarding a medical condition. Use of the device for diagnosis should only be done in consultation with a qualified healthcare professional.

## Key features

- Radiation-free scoliosis screening
- 3D torso capture with TrueDepth or Structure Sensor
- Asymmetry analysis and curve angle estimation
- Supports clinical decision-making
- Rapid analysis via secure web platform

## Recent user reviews (1 of 1)

All indexed reviews: https://appshunter.io/ios/app/backscnr/id1629230768/reviews.md

### 5/5 — Structure SDK is blocked

*2026-07-20*

Please fix the error

## Frequently asked questions about BackSCNR

### What is BackSCNR used for?

BackSCNR is a scoliosis screening and monitoring support tool designed to aid in the management of Adolescent Idiomatic Scoliosis (AIS). It uses surface topography to assess the 3D shape of the human torso, providing a radiation-free alternative for frequent monitoring.

### How does BackSCNR capture scans?

BackSCNR can capture 3D scans using either the Structure Sensor accessory or your iPhone's built-in TrueDepth camera. The app automatically detects connected hardware and defaults to the most suitable option.

### What kind of analysis does BackSCNR provide?

The app aids in identifying and tracking torso asymmetries over time. It provides detailed metrics, including estimated Cobb angles and deviation color maps, to support clinical decision-making.

### Is BackSCNR safe for frequent use?

Yes, BackSCNR is designed as a radiation-free and non-invasive method for monitoring scoliosis. This makes it a safe alternative for frequent assessments without exposure to harmful X-rays.

### What devices are compatible with BackSCNR?

BackSCNR is compatible with TrueDepth-enabled iPhones (iPhone X and newer) and compatible iPads. It is optimized for Structure Sensor 3 and also supports Mark II and Pro models.

### How often is BackSCNR updated?

The app was last updated on June 7, 2026, indicating a recent update. The developer, BackSCNR Inc., has released version 4.1, suggesting ongoing development and support.

### What is the age rating for BackSCNR?

BackSCNR has an age rating of 17+. This is likely due to the medical nature of the application and its intended use in clinical support settings.

### Does BackSCNR have ads?

No, BackSCNR does not contain advertisements. The app is free to download and use without any ad interruptions.

## Version history (last 5 releases)

### 4.2 — 2026-07-22

This update improves performance and reliability:
- Faster scan uploads. Scans now transfer more quickly, especially on slower networks.
- Stability and reliability improvements.
- Option to Sign In With Apple

Thank you for using BackSCNR.
Do you have any questions or feedback? Please visit backscnr.com

### 4.1 — 2026-06-07

What's new in v4.1:
• TrueDepth support for eligible iPhones (iPhone X and later), pre-scan user login, and a timed app lockout to protect patient data.
• Introduced a landing experience: a new pre-login welcome screen highlighting BackSCNR's capabilities, and a streamlined post-login home with quick actions for starting a scan, viewing patients, and opening the user manual.
• Guided scan onboarding: Step-by-step Patient Preparation and Scanning Instructions screens walk the operator through positioning, environment, and capture technique before each scan. The TrueDepth sensor now pre-warms while the operator reads the checklist, so scanning starts instantly when they're ready.
• In-app user manual: The BackSCNR provider documentation is now accessible directly from the home screen.
• Refreshed visual design: new Oswald and Roboto typography, refined light-mode styling, redesigned iPad layouts, and updated iconography across the app.
• Scanning view improvements: Added app-wide navigation, repositioned and enlarged the reset button, and updated overlay typography for better readability during capture.
• Sensor handling: Clearer messaging when a compatible depth sensor isn't connected or available.
• Built on Structure SDK 3.7. Release notes: https://support.structure.io/article/417-structure-sdk-ios-release-notes#Structure-SDK-360-for-iOS-gue_6
• Includes app banner surpression from in-app browser

### 3.4.0 — 2025-07-23

As per Structure's webpage (https://support.structure.io/article/417-structure-sdk-ios-release-notes#Structure-SDK-340-for-iOS-CCT_r)

New Features:
- Added Reboot Sensor functionality for Structure Sensor 3
- Structure/STCaptureSession/rebootSensor
- Added Support for iPad Air 13-inch 7th Gen
- Added Signature to SDK Framework for compatibility and security.

Fixes and Improvements:
- Fixed an issue where using the Structure SDK with a simulator would cause a crash.
- Fixed an issue where available firmware update messages were not displayed.
- Fixed a crash where Structure Sensor 3 would disconnect between two scans in rapid succession.
- Fixed various crashes when using Structure Sensor Mark II or Structure Sensor Pro.
- Improved Initialization times for Structure Sensor 1.
- Fixed several issues relating to presets where preset values were not overwritten correctly.

Issues:
- Freezes - In rare occasions the app may freeze when switching Tracker settings from ‘Depth Only’ to ‘Depth + Color’
- Streaming - Calibrator or Structure App may not stream depth data when launched, this can usually be corrected by:
    - Restarting the app
    - Switching between streaming modes.
- Jittering - In some cases the video feed can ‘Jitter’, where frames per second (fps) can drop dramatically.

### 3.3.2 — 2025-05-07

Fixed tracking failures when using TrueDepth in some rare scenarios.

### 3.3.1 — 2025-05-06

Before using the new features, ensure the following:
1. Your Structure Sensor 3 firmware is updated to version 1.2 - instructions here [1]
2. Latest version of Calibrator is installed on your host device [2]
3. New calibration is completed with the latest (updated) version of Calibrator [3]

New Features:
- Ultra-Close: allows scans up to 25 cm of the target. 
- Room Scanning (Beta): for scanning large indoor spaces
- Dark Object Scanning (Beta) - for scanning black or dark colored objects.
- Simplified - for quickly and easily tracking objects within a wide range of sizes.

Improvements:
- Significantly improved initialization time of Structure Sensor 3
- Significantly improved Structure Sensor 3 preset switch time. 
- Significantly improved TrueDepth accuracy and performance on all iPads
- Improved color registration on ST03 sensors
- Significantly improved connectivity with Structure Sensor 3
- Fixed IR LED control for original Structure Sensor


[1] https://support.structure.io/article/410-getting-started---updating-your-sensors-firmware
[2] https://apps.apple.com/us/app/structure-sensor-calibrator/id914275485
[3] https://support.structure.io/article/382-getting-started-how-to-use-the-calibrator-app

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-07-28.*