OpenCat - AI Chat, Agent, MCP
OpenCat - AI Chat, Agent, MCP is made and published by Early Moon, LLC. AppBrain is an independent app data site and isn't affiliated with Early Moon, LLC. The app name, icon, screenshots and description belong to Early Moon, LLC and are shown as published on the App Store.
AppBrain's verdict
Loved by users- Rating on App Store
- 4.64
- 846 ratings
- Last updated
- October 11, 2026
Users love it: 4.6 stars from 846 ratings.
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Releases
Updates seen on the App Store- Version
- 26.10.1
- Launched
- March 2023
No changelog data
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Technology
Found in the app by AppBrain- Price
- Free
- App size
- 95.5 MB
- Content rating
- High
Technologies used by OpenCat - AI Chat, Agent, MCP
About the app and developer
About OpenCat - AI Chat, Agent, MCP
OpenCat - AI Chat, Agent, MCP is a productivity app developed by Early Moon, LLC.
User Ratings
OpenCat - AI Chat, Agent, MCP is rated 4.64 out of 5 stars. The rating is based on 850 ratings.
App Information
OpenCat - AI Chat, Agent, MCP is freely available from the App Store. The app size is 95.53 MB. The latest version available is 26.10.1. The last update was on October 11, 2026.
Technical Requirements
The app has a content rating of High Maturity. The app has been available on the App Store since March 2023.
Developer information for Early Moon, LLC
Address:
Store listing
By Early Moon, LLC, from the App Store
Description by Early Moon, LLC Written by the developer, not by AppBrain. Click to read.
· Multiple model options — local models, API Key, Cloud subscription, Apple Intelligence
· MCP — supports MCP and tool calls
· Web search — available on OpenCat Cloud and select providers
· System-wide translation — select text in any app for instant AI translation
· Content rendering — supports LaTeX formulas, Markdown, and code highlighting
· Cross-platform — natively built for Mac, iPhone, and iPad
· Data privacy — stored locally, synced across devices via iCloud
[Pro Features]
· AI Keyboard — invoke AI right in the text field of any app to polish or reply in one step
· OpenCat Cloud subscription provides access to all major models
[A Variety of Models]
· OpenCat Cloud — fast access to leading models
· Local models — one-tap download of open-source models for offline use, accelerated by Apple silicon
· BYOK — use your own API Key, including Coding Plan
· System models — supports Apple Foundation Models
[OpenCat Cloud — Ready to Use, No Setup]
· No sign-up, zero configuration, all major models supported
· 50+ models — ChatGPT, Claude, Gemini, Grok, DeepSeek, GLM, MiniMax, Kimi, Qwen, Doubao, and more, all in one place
· Online search supported
[System-Level AI Translation]
Set OpenCat as your default translation app to translate selected text directly in Safari, Mail, Notes, and any other app. Powered by large language models, translations are natural and fluent — far superior to traditional translation engines.
[Local Models, Offline Inference]
· One-tap download — popular open-source models like Llama, Qwen, and Gemma
· Apple silicon acceleration — built on Apple's official MLX framework, fully leveraging GPU performance for fast, energy-efficient inference
· Fully offline — works without internet, conversation data never leaves your device
[Use Your Own API Key]
· 25+ providers supported — OpenAI, Claude, Gemini, DeepSeek, Kimi, Qwen, Doubao, ERNIE, and more
[Contact Us]
Email: support@dreamoon.ai
Terms of Use
https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Privacy Policy & Third-party AI Service Privacy Policy
https://opencat.app/privacy