# Structure Sensor Calibrator vs EM3D

The clearest difference is rating: EM3D at 4.0 against Structure Sensor Calibrator's 3.0. EM3D also leads on review sentiment (33% vs 19%) and iOS requirement (10.0 vs 13.0). On price, ratings volume, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

EM3D holds the better App Store score, 4.0 against 3.0. Both are backed by a comparable volume of ratings — 4 and 5 respectively. Written reviews point the same way: 19% of Structure Sensor Calibrator's written reviews are positive against 33% of EM3D's.

## The numbers

| Metric | Structure Sensor Calibrator | EM3D |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.0 (4 ratings)](https://appshunter.io/ios/app/structure-sensor-calibrator/id914275485/reviews) | **[4.0 (5 ratings)](https://appshunter.io/ios/app/em3d-mirror-saver/id1567045777/reviews)** |
| Number of ratings | 4 | **5** |
| Positive reviews | 19.0% of reviews | **33.3% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | — |
| Monetization | Free | Free |
| Size | 39 MB | 14 MB |
| Requires iOS | 13.0 | **10.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [XRPro, LLC](https://appshunter.io/developer/1642756687) | [Brawny Lads](https://appshunter.io/developer/622937459) |

## 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


### EM3D

[App page](https://appshunter.io/ios/app/em3d-mirror-saver/id1567045777)

This utility app acts as a second screen for a 3D scanning application. It allows users to easily scan objects other than themselves by mirroring the scanning device's screen to another iOS device. This feature is particularly useful for capturing detailed 3D models.

**Highlights:** Second screen functionality, Mirrors scanning device screen, Facilitates scanning objects other than self, Standalone app option, Compatible with older iOS versions

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Structure Sensor Calibrator free?

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

### Is EM3D free?

EM3D is free to download, with no in-app purchases.

### Which has better reviews, Structure Sensor Calibrator or EM3D?

EM3D is rated higher. Structure Sensor Calibrator averages 3.0 out of 5 from 4 ratings, while EM3D averages 4.0 from 5 ratings.

### Do Structure Sensor Calibrator or EM3D have ads?

Neither Structure Sensor Calibrator nor EM3D shows ads.

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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.*