# NightWalk Depth Scanner vs OpenSurvey3D

The clearest difference is iOS requirement: NightWalk Depth Scanner at 17.6 against OpenSurvey3D's 26.2. On price, update cadence, 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.

NightWalk Depth Scanner ships an update monthly, OpenSurvey3D every 3 weeks. The most recent releases landed on October 19, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | NightWalk Depth Scanner | OpenSurvey3D |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Monthly | **Every 3 weeks** |
| Size | 1 MB | 20 MB |
| Requires iOS | **17.6** | 26.2 |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [FEDYK SP Z O O](https://appshunter.io/developer/1763610988) | [Laan Labs](https://appshunter.io/developer/310916919) |

## What reviewers say

### NightWalk Depth Scanner

[App page](https://appshunter.io/ios/app/nightwalk-depth-scanner/id6746720191)

**Features:** macOS Compatibility

**In-app purchases:** none


### OpenSurvey3D

[App page](https://appshunter.io/ios/app/opensurvey3d/id6794840161)

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

**In-app purchases:** none


## Frequently asked questions

### Is NightWalk Depth Scanner free?

NightWalk Depth Scanner is free to download, with no in-app purchases.

### Is OpenSurvey3D free?

OpenSurvey3D is free to download, with no in-app purchases.

### Do NightWalk Depth Scanner or OpenSurvey3D have ads?

Neither NightWalk Depth Scanner nor OpenSurvey3D shows ads.

### Which is updated more often, NightWalk Depth Scanner or OpenSurvey3D?

NightWalk Depth Scanner ships an update monthly, and OpenSurvey3D every 3 weeks. Most recently, NightWalk Depth Scanner was updated on October 19, 2026 and OpenSurvey3D on October 13, 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.*