# PMI Atom vs ChatMCP

The clearest difference is in-app purchases: PMI Atom at none against ChatMCP's 3. On price, update cadence, ads and device support there is nothing between them.

Both are free to download. ChatMCP sells 3 in-app purchases, starting at $19.99 per month. PMI Atom asks for nothing beyond the download.

PMI Atom ships an update every 5 days, ChatMCP every 6 days. The most recent releases landed on October 11, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | PMI Atom | ChatMCP |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.3 (64 ratings)](https://appshunter.io/ios/app/chatmcp/id6745196560/reviews)** |
| Number of ratings | — | **64** |
| Positive reviews | — | 58.8% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 5 days** | Every 6 days |
| Monetization | — | Free with in-app purchases |
| Size | 23 MB | 61 MB |
| Requires iOS | 16.0 | **15.6** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 17+ | 17+ |
| Developer | [Power Monitors, Incorporated](https://appshunter.io/developer/540822326) | [Kitsune Apps, LLC](https://appshunter.io/developer/1731851388) |

## What reviewers say

### PMI Atom

[App page](https://appshunter.io/ios/app/pmi-atom/id6451215869)

**In-app purchases:** none


### ChatMCP

[App page](https://appshunter.io/ios/app/chatmcp/id6745196560)

This app allows AI models to interact with native iOS functionalities and external data sources. It provides a standardized protocol for seamless integration, enabling AI to access system services like calendars and photos, and can be extended with custom tools.

**Highlights:** Local tool integration with iOS frameworks, Remote tool connectivity, Secure and standardized AI interactions, Customizable tool extensions, Access to calendar and photos

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium (Monthly) | $19.99 | per month |
| Premium (Yearly) | $199.00 | per year |
| Pro Access Mode | $12.99 | one-time |


## Frequently asked questions

### Is PMI Atom free?

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

### Is ChatMCP free?

ChatMCP is free to download, with in-app purchases available.

### Do PMI Atom or ChatMCP have ads?

Neither PMI Atom nor ChatMCP shows ads.

### Which is updated more often, PMI Atom or ChatMCP?

PMI Atom ships an update every 5 days, and ChatMCP every 6 days. Most recently, PMI Atom was updated on October 11, 2026 and ChatMCP on October 12, 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.*