nocal is a calendar app for Mac, Windows, iPhone, and Android, positioned as a new kind of calendar tool for busy professionals. It unifies Google Calendar and Outlook, and integrates calendars, notes, and tasks into a single app, while also including a built-in MCP (Model Context Protocol) server for use by AI agents.
In terms of purpose, nocal aims to help users prepare for meetings, take notes, and track action items within one interface, reducing switching between multiple apps. It offers a "fresh weekly canvas" that turns the weekly view into a command center, where users can write in Markdown and embed rich components such as tables, task lists, and sub-notes to plan the week as a whole.
Key capabilities include:
- Unified calendar and notes and tasks: take notes and track action items directly within the calendar, and link notes to each other.
- Smart scheduling: supports natural language scheduling, for example entering "Lunch with Alex tomorrow at noon" to schedule it.
- Weekly canvas and rich components: build weekly plans with Markdown and embeddable components (tables, task lists, sub-notes, etc.).
- Schedule insights: identify 1:1 meetings that can be grouped together to free up afternoon focus time; mark optional meetings so they can be skipped; help lock in focus blocks and schedule work content; close out the day with a quiet block.
- Unified inbox: bring personal and work events together in one place for real-time triage and response, and see what needs attention during the week.
- Knowledge graph: meetings and notes can reference each other, and notes can be nested or freely linked, forming an interconnected knowledge network that accumulates institutional knowledge as projects progress.
- Built-in MCP server: enables Cursor, ChatGPT, Claude, and others to read real context from nocal and write results back into structured notes. The workflow is: the agent calls nocal MCP tools to retrieve the correct note history and project context; the model reasons and synthesizes to generate clear outputs such as release notes, plans, summaries, and action lists; the output is written back into nocal notes with safe patch semantics, so the results are not confined to chat history. nocal is described as the write-back layer in the MCP stack.
How to use it: users can use nocal on Mac, Windows, iOS, and Android devices. Current official information mentions that the app is available for Mac and Windows (you can start organizing your calendar), as well as iPhone and Android. Specificinstallation steps or download links are not yet provided.
Use cases: suitable for professionals who need to manage personal and work schedules in a unified way, especially users who want to combine calendars with notes and use AI agents to generate structured output from real context. It is also suitable for scenarios that require grouping 1:1 meetings, protecting focus time, reducing interruptions from optional meetings, and accumulating team knowledge through a knowledge graph.
Limitations: the official information does not clearly state whether it is free or paid, specific pricing, supported languages, data storage methods, and other details; these facts are not yet provided.
