Coffee

Product Introduction

1. Definition: Coffee is a native macOS Markdown editor and note-taking application designed for Apple silicon and Intel processors running macOS 15 or later. Functioning strictly as a local-first software utility, it stores all data as plain Markdown (.md) files within a user-designated directory structure without relying on proprietary databases or cloud servers.
2. Core Value Proposition: The application provides a distraction-free, quiet writing environment that combines local plain-text file ownership with advanced technical integrations, including inline natural-language calculations, native TeX math rendering, Mermaid diagram generation, and transparent AI-assisted edit reviews.

Main Features

1. Inline Calculations and Natural Language Processing: Evaluates sums, currencies, crypto conversions, time zones, dates, units, percentages, and variables directly within the text editor. Answers are displayed dynamically beside each line without altering the underlying raw .md file, maintaining full compatibility with Git version control and external Markdown readers.
2. AI Edit Review and MCP Integration: Provides granular change-tracking mechanics when external AI tools (such as Claude or Cursor) modify note files, allowing users to review, keep, or undo individual edits line by line. Integrates with the Model Context Protocol (MCP) to allow authorized AI applications to read and write notes locally.
3. Multi-Format Document Import and Export: Instantly converts imported Microsoft Word (.docx, .doc), Rich Text Format (.RTF), and OpenDocument Text (.odt) files into clean Markdown notes while preserving original headings, tables, links, and lists. Exports documents to PDF, EPUB (with multi-note chapter compilation), HTML, and plain text with customizable layouts.
4. Local Neural Search and Dictation: Utilizes local macOS capabilities (requiring Apple Intelligence on compatible hardware) to execute rapid keyword lookups across thousands of notes in milliseconds, search text inside scanned images or whiteboards, and perform on-device voice dictation without transmitting user data externally.

Problems Solved

1. Pain Point: Vendor lock-in, proprietary database formats, and cloud synchronization dependencies inherent in traditional note-taking applications that compromise user data ownership and privacy.
2. Target Audience: Software developers, technical writers, researchers, students, and Mac power users who require strict local file management, Git-friendly document workflows, and advanced mathematical or diagramming capabilities.
3. Use Cases: Writing documentation in local Git repositories with quick branch pull request creation; managing financial calculations and project budgeting directly inside markdown notes; compiling technical notes and code snippets into professional PDF or EPUB books.

Unique Advantages

1. Strengths & Limitations (Pros & Cons):
   • Strengths: Complete data ownership via local plain-text files; robust inline calculation engine that avoids corrupting source files; transparent AI diff review tools; exceptionally fast local search ignoring accent marks; native rendering of Mermaid diagrams and TeX equations.
   • Limitations: Limited strictly to macOS (no official Windows, Linux, or mobile client applications); paid subscription or one-time purchase required after a 14-day free trial; advanced AI features require newer macOS versions and compatible Apple Silicon hardware.
2. Key Alternatives & Differentiation:
   • Obsidian: While Obsidian offers multi-platform support and an extensive plugin ecosystem, Coffee provides tighter macOS native performance, built-in natural language calculations, and granular AI edit reviews out of the box without requiring third-party plugins.
   • Typora: Typora focuses heavily on a WYSIWYG Markdown authoring experience with a lower one-time price point, whereas Coffee differentiates itself through advanced developer tools like Git branch pull request generation, MCP AI connectivity, and dynamic calculation overlays.
   • iA Writer: iA Writer excels in minimalist typography and prose structuring, but Coffee offers superior technical features including interactive calculation engines, diagram rendering, and document conversion pipelines.

Frequently Asked Questions (FAQ)

1. Where are my notes stored, and can I use other editors with them? Your notes are stored as standard plain-text Markdown files inside a local folder of your choice on your Mac. Because Coffee does not use a proprietary database, any other Markdown editor, text editor, or Git client can immediately open, read, and edit your files.
2. Do calculations or AI edits alter my raw Markdown files? No. Calculations, inline answers, comments, and AI edit reviews are rendered dynamically within the Coffee interface and are never written into the underlying .md files. Other editors and version control systems will only see the clean text you originally typed.
3. What is the pricing model for Coffee? Coffee offers a 14-day free trial with no credit card required. Following the trial, it costs €3 a month or €29 a year for an individual subscription, or a one-time purchase option of €79 which includes two years of software updates. Team packs are also available starting at €625 a year for 25 users.
4. Does Coffee require an internet connection or user account to function? No account is needed to download and start using the 14-day free trial. Coffee operates locally and completely offline for core writing, searching, and calculation features. An internet connection is only required for updating currency exchange rates, syncing subscriptions, and publishing pull requests to remote repositories.