# OpenCat vs MARGIN

The clearest difference is update cadence: MARGIN at daily against OpenCat's weekly. OpenCat's advantage is device support (3 vs 1). On price, ads, in-app purchases and iOS requirement there is nothing between them.

Both are free to download. OpenCat sells 4 in-app purchases, starting at $3.99 per month and MARGIN sells 2 in-app purchases, starting at $7.99 per month. Whichever you choose, the download price is not the number that matters.

OpenCat ships an update weekly, MARGIN daily. The most recent releases landed on October 30, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | OpenCat | MARGIN |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (851 ratings)](https://appshunter.io/ios/app/opencat-ai-chat-agent-mcp/id6445999201/reviews)** | — |
| Number of ratings | **851** | — |
| Positive reviews | 64.6% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Weekly | **Daily** |
| Monetization | Free with in-app purchases | — |
| Size | 96 MB | 11 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | **iPhone, iPad, Mac** | iPhone |
| Age rating | 17+ | 4+ |
| Developer | [Early Moon, LLC](https://appshunter.io/developer/1119881923) | [鑫宇 胡](https://appshunter.io/developer/1863705090) |

## What reviewers say

### OpenCat

[App page](https://appshunter.io/ios/app/opencat-ai-chat-agent-mcp/id6445999201)

This AI utility tool offers seamless integration of advanced AI models into your daily routine on Mac, iPhone, and iPad. It features a user-friendly interface, keyboard extensions for in-app AI access, and Siri/shortcut integration for automation. Supports a wide range of popular AI models and offers team deployment options.

**Highlights:** Support for latest popular AI models, Keyboard extensions for in-app AI, Realistic voice synthesis, Siri and shortcut integration, Team deployment with Docker, Customizable AI parameters, Markdown content rendering

**Features:** Vision Pro support

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Cloud AI | $3.99 | per month |
| Cloud AI | $24.99 | per year |
| Tokens Package | $5.99 | one-time |
| OpenCat Pro | $9.99 | one-time |

**What reviewers like**

- 🚀 Fast and responsive
- 👍 Convenient and user-friendly
- 💡 Customizable API integrations
- 🌐 Syncs across devices
- 🎨 Clean and visually appealing design

**What reviewers complain about**

- 🐛 Bugs and performance issues
- 🔒 Lack of custom API support
- 💻 Compatibility issues with older devices/OSes
- 🗂️ Difficulty managing conversations
- 📤 Inability to export chat data

**Reported bugs**

- Streaming response disruptions
- Disappearing API key input fields
- Inconsistent Markdown rendering
- Keyboard extension not working as expected
- Sync issues between devices

**Requested features**

- Support for more AI models (e.g., Ollama, Groq)
- Markdown rendering for chat responses
- Ability to upload images and files
- Customizable keyboard extensions
- Background task support for long-running queries


### MARGIN

[App page](https://appshunter.io/ios/app/margin-never-forget/id6758026096)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| MARGIN Standard | $7.99 | per month |
| MARGIN Pro | $17.99 | per month |


## Frequently asked questions

### Is OpenCat free?

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

### Is MARGIN free?

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

### Do OpenCat or MARGIN have ads?

Neither OpenCat nor MARGIN shows ads.

### Which is updated more often, OpenCat or MARGIN?

OpenCat ships an update weekly, and MARGIN daily. Most recently, OpenCat was updated on October 30, 2026 and MARGIN on October 28, 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.*