Comparison

Spatial Viewer vs On‑Device AI

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Spatial Viewer

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
Read full description

Spatial Viewer for iOS is made to convert your Spatial Videos from your iPhone camera roll, and make them viewable on your Meta Quest headset.  In 1-tap, the app will convert Spatial Videos shot by the latest iPhone and upload them to your Meta Quest. You can then view it on Meta Quest from the Spatial Viewer app (also free). Immerse yourself in your favourite memories using Spatial Viewer by playing iPhone 15 Pro's spatial video library on Meta Quest. This app allows you to directly access and view your spatial videos in life-size scale, bringing a new dimension to your memories and experiences. With Spatial Viewer, you get the most straightforward and fastest solution to viewing iPhone 15 Pro’s Spatial Videos without a Vision Pro headset. **Key Features:** - Watch Spatial Videos on Quest headset: Sync your Google Drive folder with Spatial Videos to play any spatial video directly from Meta Quest. - Convert Spatial Video to 3D: Spatial Viewer for iOS takes your spatial videos and converts them into immersive 3D formats that are playable on your Meta Quest. TL;DR Spatial Viewer is an All-in-one Solution to make your fancy Spatial Videos playable on your Meta Quest headset. DESIGNED TO BE USER-FRIENDLY. **How It Works:** 1. Install Spatial Viewer on your iPhone 15 Pro or Pro Max. 2. Select & convert spatial videos to watch on Meta Quest. 3. Share the converted videos to Drive. And that’s it. Now you simply open “Spatial Viewer” on your Meta Quest and the videos will all be available there, since they are all synced via the cloud in Google Drive.

About

On‑Device AI

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
Read full description

On-Device AI puts chat, listening, transcription, notes, and research in one private app for iPhone, iPad, Mac, and Apple Vision Pro. Your data stays on your device. Download a model once and keep working on a plane, on the subway, or without a signal. Chats, documents, recordings, and notes stay on your device. Online providers and web features are optional and work only after you enable them. ONE APP, YOUR WAY Open every workspace from a customizable Menu. Keep favorites under Pinned and everything else close by under Available. AI CHAT Chat with local or cloud models. • Run local models from families such as Gemma, Qwen, DeepSeek, and Mistral, or connect your own provider account • Browse, download, and manage models that fit your device, including ones for text, vision, reasoning, and tools • Drop in documents, images, and scanned PDFs; approve private on-device OCR only when a PDF needs it • Fork any conversation and compare several models on the same prompt • Let the model use tools for calculations, web requests, documents, Calendar, and Reminders, and review proposed changes before they apply • Create reusable Agent Profiles, then add AI Skills, MCP servers, and tools from one clearer Agent Workflows setup • Keep facts you repeat often in Global Memory LISTEN LIBRARY AND RSS FEEDS Read less, listen more. • Turn PDFs, Markdown, plain text, web articles, and scanned books into a listening queue • Scan photographed pages, correct the OCR the app runs on device, and keep each page with its spoken text • Follow sites through RSS, Atom, and JSON feeds, then send articles to Up Next • Choose Apple voices or local neural voices, follow along in the reader, and set a sleep timer VOICE NOTE, VOICE TYPING, AND TEXT TO SPEECH Speak instead of typing, and listen instead of reading. • Record and transcribe meetings, lectures, interviews, and quick ideas • Dictate with Voice Typing on Mac or the voice keyboard on iPhone and iPad • Transcribe with Apple Speech, Whisper, Parakeet, Nemotron, Qwen3-ASR, MOSS, and other engines • Turn text, or text captured from a photo, into audio with Apple voices, Kokoro, Supertonic, VoxCPM2, IndexTTS2, and other engines • Export transcripts as text, subtitles, or Markdown AI SEARCH AND AI BROWSER Research with a second pair of hands. • Search the web in a conversation and let the model read the results for you • Browse with tabs, profiles, history, and downloads, then ask your model to read, assist, or act on the page • Hand a task to the browser agent, watch each step, and take over whenever you want KNOWLEDGE AND TEXT NOTE Give your AI your own material to work from. • Add PDFs, text, Markdown, code, images, and website content to a private searchable library • Write and edit Markdown notes in the app • Import AI chats, voice notes, Text to Speech items, and AI Search results • Tune retrieval and index edited content again APP HELP Ask how a feature or setting works. App Help answers from a guide that ships inside the app, keeps help out of your saved chats, and points to the right settings. MADE FOR APPLE DEVICES • Native layouts adapt from focused navigation on iPhone to category sidebars on larger screens • Settings are grouped by purpose, including Voice Typing, Agent Workflows, Models & Storage, Privacy & Data, Memory, and—on Mac—Instant Messaging • Widgets for Listen, Voice Note, Text Note, and Quick Actions • Siri, Apple Shortcuts, App Intents, the Mac menu bar, and keyboard shortcuts you can customize • Apple hardware acceleration for supported local models • Browse chat, transcription, speech, and embedding models in one Model Library • Store models internally, on an external drive, or on a shared volume, with separate tools for cleanup and recovery • Interface in English, Dutch, French, German, Italian, Japanese, Spanish, Portuguese, and Traditional Chinese EULA: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Spatial Viewer4 screens
On‑Device AI4 screens

Verdict

The call

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.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

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.

ReceptionRating · Positive reviews · Number of ratings

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.

Scorecard6 real differences · 4 level
Spatial Viewer versus On‑Device AI: the parameters behind the verdict, then further details
ParameterSpatial ViewerOn‑Device AI
PriceFreeFree
Rating2.6 (5 ratings)4.4 (162 ratings) — better
Positive reviews14.3% of reviews63.6% of reviews — better
Number of ratings5162 — better
Update frequency—Every 2 weeks
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhoneiPhone, iPad, Mac, Vision Pro — better
Requires iOS17.2 — better18.0
Further details — not scored
Size0 MB1.8 GB
Age rating4+17+
DeveloperSoftorino Inc.Zijie Deng

Customer experience

Spatial Viewer

All ratings5 ratings
Positive40.0%
Neutral0.0%
Negative60.0%
Written reviews7 reviews
Positive14.3%
Neutral0.0%
Negative85.7%

On‑Device AI

All ratings162 ratings
Positive82.1%
Neutral8.0%
Negative9.9%
Written reviews107 reviews
Positive63.6%
Neutral15.9%
Negative20.6%

Bugs and requests

Spatial Viewer

Not enough reviews yet to summarise bugs or requests.

On‑Device AI

Reported bugs

3 issues
  • Crashes on startup
  • Model selection issues
  • Inability to copy generated text

Requested features

9 requests
  • Automated multi-character conversations
  • Character set saving and syncing
  • Streamlined search integration
  • UI optimization for icons
  • Remote endpoint support for multi-agents
Show 4 more
  • HomeKit integration
  • Improved documentation
  • Enlarged agent input window
  • Per-agent model assignment

In-app purchases

None

Spatial Viewer

No in-app purchases

4 purchases

On‑Device AI

Subscriptions2
  • Pro Member Subscription$3.991 Month
  • Pro Member Subscription$34.991 Year
One-time2
  • Lifetime Pro Member$49.99
  • Lifetime Pro Member$99.99

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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