# Spatial Viewer vs On‑Device AI

The clearest difference is review sentiment: On‑Device AI at 64% against Spatial Viewer's 14%. On‑Device AI also leads on rating (4.4 vs 2.6) and ratings volume (162 vs 5). Spatial Viewer's advantage is in-app purchases (none vs 4). On price, ads and iOS requirement there is nothing between them.

Both are free to download. On‑Device AI sells 4 in-app purchases, starting at $3.99 per month. Spatial Viewer asks for nothing beyond the download.

On‑Device AI holds the better App Store score, 4.4 against 2.6. That said, the two scores are not equally well evidenced: On‑Device AI has 162 ratings behind it against 5, so its average is the more settled of the two. Written reviews point the same way: 14% of Spatial Viewer's written reviews are positive against 64% of On‑Device AI's.

## The numbers

| Metric | Spatial Viewer | On‑Device AI |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.6 (5 ratings)](https://appshunter.io/ios/app/spatial-viewer/id6477408041/reviews) | **[4.4 (162 ratings)](https://appshunter.io/ios/app/ondevice-aiprivate-workspace/id6497060890/reviews)** |
| Number of ratings | 5 | **162** |
| Positive reviews | 14.3% of reviews | **63.6% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | — | Every 2 weeks |
| Monetization | **Free** | Free with in-app purchases |
| Size | 0 MB | 1.8 GB |
| Requires iOS | **17.2** | 18.0 |
| Devices | iPhone | **iPhone, iPad, Mac, Vision Pro** |
| Age rating | 4+ | 17+ |
| Developer | [Softorino Inc.](https://appshunter.io/developer/1552392872) | [Zijie Deng](https://appshunter.io/developer/1070117038) |

## What reviewers say

### Spatial Viewer

[App page](https://appshunter.io/ios/app/spatial-viewer/id6477408041)

Easily convert and view spatial videos from your iPhone on your Meta Quest headset. This app streamlines the process, allowing you to relive your memories in an immersive 3D format without needing specialized hardware.

**Highlights:** Convert spatial videos for Meta Quest, View iPhone spatial videos on Quest, Sync with Google Drive, User-friendly interface, Direct access to video library

**Features:** macOS Compatibility

**In-app purchases:** none


### On‑Device AI

[App page](https://appshunter.io/ios/app/ondevice-aiprivate-workspace/id6497060890)

Transform your device into a private AI assistant for meetings and complex tasks. Features include speaker diarization, live transcription, and specialized subagents for research, analysis, and writing. Control your AI via messaging apps, with options for 100% offline processing or cloud connectivity.

**Highlights:** Speaker Diarization for meeting transcripts, Real-time live transcription, Natural AI speech generation, Deploy specialized AI subagents, AI-powered web browser automation, Control AI via messaging apps, 100% offline processing option

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Member Subscription | $3.99 | per month |
| Pro Member Subscription | $34.99 | per year |
| Lifetime Pro Member | $49.99 | one-time |
| Lifetime Pro Member | $99.99 | one-time |

**What reviewers like**

- 🚀 Game-changing AI assistant
- 🔍 Powerful search functionality
- 👍 Customizable and versatile
- 🌐 Seamless multi-device experience
- 💡 Innovative character-based interactions

**What reviewers complain about**

- 🐛 Crashes on larger models
- 🔋 Heating issues on some devices
- 🔍 Slow and unreliable web search
- 💻 Buggy on macOS

**Reported bugs**

- Crashes on startup
- Model selection issues
- Inability to copy generated text

**Requested features**

- Automated multi-character conversations
- Character set saving and syncing
- Streamlined search integration
- UI optimization for icons
- Remote endpoint support for multi-agents


## Frequently asked questions

### Is Spatial Viewer free?

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

### Is On‑Device AI free?

On‑Device AI is free to download, with in-app purchases available.

### Which has better reviews, Spatial Viewer or On‑Device AI?

On‑Device AI is rated higher. Spatial Viewer averages 2.6 out of 5 from 5 ratings, while On‑Device AI averages 4.4 from 162 ratings.

### Do Spatial Viewer or On‑Device AI have ads?

Neither Spatial Viewer nor On‑Device AI 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.*