# iDOS 3 vs On‑Device AI

The clearest difference is price: On‑Device AI at Free against iDOS 3's $4.99. On‑Device AI also leads on update cadence (fortnightly vs every 6 weeks) and ratings volume (163 vs 52). iDOS 3's advantage is in-app purchases (none vs 4) and chart position (#57 vs unranked). On rating, review sentiment, ads and device support there is nothing between them.

On‑Device AI is free to download; iDOS 3 costs $4.99 up front. On‑Device AI sells 4 in-app purchases, starting at $3.99 per month. iDOS 3 asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 4.3 for iDOS 3 against 4.4 for On‑Device AI. Both are backed by a comparable volume of ratings — 52 and 163 respectively. Written reviews are what separate them: 70% of iDOS 3's written reviews are positive against 64% of On‑Device AI's.

iDOS 3 ships an update every 6 weeks, On‑Device AI fortnightly. The most recent releases landed on November 7, 2026 and November 8, 2026 respectively.

## The numbers

| Metric | iDOS 3 | On‑Device AI |
| --- | --- | --- |
| Price | $4.99 | **Free** |
| Rating | [4.3 (52 ratings)](https://appshunter.io/ios/app/idos-3/id1580768213/reviews) | **[4.4 (163 ratings)](https://appshunter.io/ios/app/ondevice-aiprivate-workspace/id6497060890/reviews)** |
| Number of ratings | 52 | **163** |
| Positive reviews | **69.7% of reviews** | 63.6% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Fortnightly** |
| Monetization | **Free** | Free with in-app purchases |
| Best chart rank | **#57** | — |
| Size | 8 MB | 1.8 GB |
| Requires iOS | **15.0** | 18.0 |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, Mac, Vision Pro** |
| Age rating | 4+ | 17+ |
| Developer | [潮激 李](https://appshunter.io/developer/342075158) | [Zijie Deng](https://appshunter.io/developer/1070117038) |

## What reviewers say

### iDOS 3

[App page](https://appshunter.io/ios/app/idos-3/id1580768213)

**Currently charting:** #57 Top Paid · Utilities (US App Store)

Experience classic DOS games and applications on your iPhone and iPad. This app emulates a DOS PC, offering modern controls for enhanced playability. It also supports productivity tasks like word processing and programming.

**Highlights:** On-screen keyboard with custom layouts, Virtual gamepad with customizable bindings, Trackpad mouse emulation, MT-32 emulation and MIDI support, Bluetooth keyboard and gamepad support, Bluetooth mouse support

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

**In-app purchases:** none

**What reviewers like**

- 🎮 Playable classic DOS games
- 🤖 Great DOS emulator functionality
- 🎨 Awesome interface and user experience
- 🔍 Supports mounting of various disk formats (floppies, ISOs)
- 🖥️ Works best on M1/M2/M4 iPads

**What reviewers complain about**

- 🕹️ Steep learning curve for casual users
- 🔧 Lacks support for some common disk formats (e.g. .img, .iso)
- 🎮 Issues with game controls and mapping
- 📁 Difficulty managing multiple floppy disk installers
- 🔍 Limited disk mounting options in landscape mode


### 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

**Features:** iPhone Duo support

**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 iDOS 3 free?

iDOS 3 costs $4.99, 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, iDOS 3 or On‑Device AI?

On‑Device AI is rated higher. iDOS 3 averages 4.3 out of 5 from 52 ratings, while On‑Device AI averages 4.4 from 163 ratings.

### Do iDOS 3 or On‑Device AI have ads?

Neither iDOS 3 nor On‑Device AI shows ads.

### Which is updated more often, iDOS 3 or On‑Device AI?

iDOS 3 ships an update every 6 weeks, and On‑Device AI fortnightly. Most recently, iDOS 3 was updated on November 7, 2026 and On‑Device AI on November 8, 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.*