# Structure Sensor Calibrator vs iDOCTOR

The clearest difference is review sentiment: iDOCTOR at 89% against Structure Sensor Calibrator's 19%. iDOCTOR also leads on rating (4.8 vs 3.0) and ratings volume (17 vs 4). Structure Sensor Calibrator's advantage is in-app purchases (none vs 1) and iOS requirement (13.0 vs 15.6). On price, update cadence, ads and monetization model there is nothing between them.

Both are free to download. iDOCTOR sells 1 one-off in-app purchase. Structure Sensor Calibrator asks for nothing beyond the download.

iDOCTOR holds the better App Store score, 4.8 against 3.0. Both are backed by a comparable volume of ratings — 4 and 17 respectively. Written reviews point the same way: 19% of Structure Sensor Calibrator's written reviews are positive against 89% of iDOCTOR's.

Structure Sensor Calibrator ships an update every 2 months, iDOCTOR monthly. The most recent releases landed on October 8, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | Structure Sensor Calibrator | iDOCTOR |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.0 (4 ratings)](https://appshunter.io/ios/app/structure-sensor-calibrator/id914275485/reviews) | **[4.8 (17 ratings)](https://appshunter.io/ios/app/idoctor-hardware-test/id6746433118/reviews)** |
| Number of ratings | 4 | **17** |
| Positive reviews | 19.0% of reviews | **88.9% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Monthly** |
| Monetization | Free | Free |
| Size | 39 MB | 15 MB |
| Requires iOS | **13.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [XRPro, LLC](https://appshunter.io/developer/1642756687) | [Rodrigo Belloso](https://appshunter.io/developer/1361382340) |

## What reviewers say

### Structure Sensor Calibrator

[App page](https://appshunter.io/ios/app/structure-sensor-calibrator/id914275485)

This utility app precisely aligns 3D depth data from a Structure Sensor accessory with your iOS device's camera. It enhances full-color 3D scanning and optimizes performance in related applications. The calibration process is quick and saves results directly to the accessory.

**Highlights:** Aligns 3D depth data, Enhances full-color 3D scanning, Optimizes sensor performance, Simple user interface, Quick calibration process, Saves results to accessory

**In-app purchases:** none


### iDOCTOR

[App page](https://appshunter.io/ios/app/idoctor-hardware-test/id6746433118)

Get a comprehensive overview of your iPhone or iPad's hardware and system specifications. This app provides detailed information on CPU, memory, storage, display, battery, and security features without requiring logins or unnecessary permissions.

**Highlights:** System overview, CPU and performance details, Memory and storage information, Screen and display specs, Battery and power status, Security and accessibility features

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| iDoctor Pro | $4.99 | one-time |


## Frequently asked questions

### Is Structure Sensor Calibrator free?

Structure Sensor Calibrator is free to download, with no in-app purchases.

### Is iDOCTOR free?

iDOCTOR is free to download, with in-app purchases available.

### Which has better reviews, Structure Sensor Calibrator or iDOCTOR?

iDOCTOR is rated higher. Structure Sensor Calibrator averages 3.0 out of 5 from 4 ratings, while iDOCTOR averages 4.8 from 17 ratings.

### Do Structure Sensor Calibrator or iDOCTOR have ads?

Neither Structure Sensor Calibrator nor iDOCTOR shows ads.

### Which is updated more often, Structure Sensor Calibrator or iDOCTOR?

Structure Sensor Calibrator ships an update every 2 months, and iDOCTOR monthly. Most recently, Structure Sensor Calibrator was updated on October 8, 2026 and iDOCTOR on October 7, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*