# 4D VIEWR vs FaceSensor

The clearest difference is update cadence: 4D VIEWR at every 8 months against FaceSensor's every 98 months. FaceSensor's advantage is rating (4.8 vs 4.3). 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.

FaceSensor holds the better App Store score, 4.8 against 4.3. Both are backed by a comparable volume of ratings — 6 and 4 respectively.

4D VIEWR ships an update every 8 months, FaceSensor every 98 months. Both last shipped on October 24, 2026.

## The numbers

| Metric | 4D VIEWR | FaceSensor |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.3 (6 ratings)](https://appshunter.io/ios/app/4d-viewr-4d-viewer-app/id926102239/reviews) | **[4.8 (4 ratings)](https://appshunter.io/ios/app/facesensor/id1436645090/reviews)** |
| Number of ratings | **6** | 4 |
| Positive reviews | 85.7% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 8 months** | Every 98 months |
| Monetization | Free | Free |
| Size | 267 MB | 1 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPod, Apple Watch |
| Age rating | 17+ | 4+ |
| Developer | [Dennis Pinheiro](https://appshunter.io/developer/867942145) | [DeutschTechnology Corp.](https://appshunter.io/developer/1436645089) |

## What reviewers say

### 4D VIEWR

[App page](https://appshunter.io/ios/app/4d-viewr-4d-viewer-app/id926102239)

Experience augmented and virtual reality by bringing enhanced products to life. Point your device's camera at special images to unlock interactive 4D scenes with videos and exploration.

**Highlights:** Augmented reality viewing, Virtual reality experiences, Interactive 4D scenes, Watch videos within scenes, Explore enhanced products, Scan 4D VIEWR-enhanced images

**In-app purchases:** none


### FaceSensor

[App page](https://appshunter.io/ios/app/facesensor/id1436645090)

This app uses your iPhone camera and haptic feedback to alert you to the presence of people nearby. It provides tactile sensations that vary in intensity and pattern based on distance and direction, offering a discreet awareness of your surroundings.

**Highlights:** Detects people using iPhone camera, Varying haptic feedback for distance, Directional haptic patterns, Discrete awareness of surroundings, Apple Watch integration for reinforced feedback, Stationary use only

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is 4D VIEWR free?

4D VIEWR is free to download, with no in-app purchases.

### Is FaceSensor free?

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

### Which has better reviews, 4D VIEWR or FaceSensor?

FaceSensor is rated higher. 4D VIEWR averages 4.3 out of 5 from 6 ratings, while FaceSensor averages 4.8 from 4 ratings.

### Do 4D VIEWR or FaceSensor have ads?

Neither 4D VIEWR nor FaceSensor shows ads.

### Which is updated more often, 4D VIEWR or FaceSensor?

4D VIEWR ships an update every 8 months, and FaceSensor every 98 months. Most recently, 4D VIEWR was updated on October 24, 2026 and FaceSensor on October 24, 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.*