# Structure vs Gatekeeper for Kiosks

The clearest difference is update cadence: Gatekeeper for Kiosks at monthly against Structure's every 2 months. Structure's advantage is device support (3 vs 1) and iOS requirement (13.0 vs 15.6). On price, 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.

Structure ships an update every 2 months, Gatekeeper for Kiosks monthly. The most recent releases landed on October 22, 2026 and October 26, 2026 respectively.

## The numbers

| Metric | Structure | Gatekeeper for Kiosks |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.1 (15 ratings)](https://appshunter.io/ios/app/structure/id570447097/reviews)** | — |
| Number of ratings | **15** | — |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Monthly** |
| Monetization | Free | — |
| Size | 19 MB | 8 MB |
| Requires iOS | **13.0** | 15.6 |
| Devices | **iPhone, iPad, iPod** | iPad |
| Age rating | 4+ | 4+ |
| Developer | [XRPro, LLC](https://appshunter.io/developer/1642756687) | [Green Security LLC](https://appshunter.io/developer/725008709) |

## What reviewers say

### Structure

[App page](https://appshunter.io/ios/app/structure/id570447097)

This app is a companion for a 3D scanning accessory, enabling iOS devices to capture the world in three dimensions. It allows users to view live 3D measurements, overlay depth and color data, and stream 3D data to a computer. The app also facilitates firmware updates and battery level checks for the accessory.

**Highlights:** Live 3D distance measurements, Overlay 3D depth and color, Live 3D stream uplink via WiFi, Structure Sensor firmware updates, Structure Sensor battery level check

**In-app purchases:** none


### Gatekeeper for Kiosks

[App page](https://appshunter.io/ios/app/gatekeeper-for-kiosks/id1485006088)

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

**In-app purchases:** none


## Frequently asked questions

### Is Structure free?

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

### Is Gatekeeper for Kiosks free?

Gatekeeper for Kiosks is free to download, with no in-app purchases.

### Do Structure or Gatekeeper for Kiosks have ads?

Neither Structure nor Gatekeeper for Kiosks shows ads.

### Which is updated more often, Structure or Gatekeeper for Kiosks?

Structure ships an update every 2 months, and Gatekeeper for Kiosks monthly. Most recently, Structure was updated on October 22, 2026 and Gatekeeper for Kiosks on October 26, 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.*