# domOS vs Chat Master AI  Your assistant

The clearest difference is in-app purchases: domOS at none against Chat Master AI  Your assistant's 3. domOS also leads on iOS requirement (13.0 vs 17.0). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Chat Master AI  Your assistant sells 3 in-app purchases, starting at $6.99 per month. domOS asks for nothing beyond the download.

domOS ships an update weekly, Chat Master AI  Your assistant every 4 days. The most recent releases landed on October 6, 2026 and October 17, 2026 respectively.

## The numbers

| Metric | domOS | Chat Master AI  Your assistant |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (4 ratings)](https://appshunter.io/ios/app/chat-master-ai-your-assistant/id6741066421/reviews)** |
| Number of ratings | — | **4** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Weekly | **Every 4 days** |
| Monetization | — | Freemium |
| Size | 50 MB | 16 MB |
| Requires iOS | **13.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Diego Accelli](https://appshunter.io/developer/1414380755) | [Evgeniy Labunchak](https://appshunter.io/developer/1625459618) |

## What reviewers say

### domOS

[App page](https://appshunter.io/ios/app/domos/id1287108824)

**Features:** macOS Compatibility

**In-app purchases:** none


### Chat Master AI  Your assistant

[App page](https://appshunter.io/ios/app/chat-master-ai-your-assistant/id6741066421)

This AI-powered assistant provides accurate, structured, and relevant responses to a wide range of queries. It offers fast processing, saves conversation history, and is available 24/7 for efficient information access and decision support.

**Highlights:** High accuracy of responses, Support for wide range of topics, Fast real-time processing, Conversation history saved, 24/7 availability, Decision support

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Month AI Chat | $6.99 | per month |
| Chat Master AI discount | $19.99 | per year |
| Premium Year AI Chat | $39.99 | per year |


## Frequently asked questions

### Is domOS free?

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

### Is Chat Master AI  Your assistant free?

Chat Master AI  Your assistant is free to download, with in-app purchases available.

### Do domOS or Chat Master AI  Your assistant have ads?

Neither domOS nor Chat Master AI  Your assistant shows ads.

### Which is updated more often, domOS or Chat Master AI  Your assistant?

domOS ships an update weekly, and Chat Master AI  Your assistant every 4 days. Most recently, domOS was updated on October 6, 2026 and Chat Master AI  Your assistant on October 17, 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.*