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Privacy Policy

Last updated: January 2, 2026

At Macuse, we respect your privacy and are committed to protecting your personal information. This Privacy Policy explains how we collect, use, and safeguard your data when you use our macOS application.

Important Note About AI Integrations

Macuse itself does not contain or run any AI models. Macuse acts as a bridge between your Mac's native apps and the AI client of your choice (such as Claude, Cursor, or other MCP-compatible AI tools).

When you use Macuse with an AI client, your data (such as email content, calendar events, or notes) is sent directly from your Mac to the AI service you have chosen to use. This means your data is subject to the privacy policy of your chosen AI provider. Macuse does not intercept, store, or process this data in transit.

If privacy is a priority, you can use Macuse with locally-running AI models (such as Ollama) to keep all data processing entirely on your device.

Information We Collect

Information You Provide

We collect information you provide directly to us:

  • License information when you purchase a premium license (email, name if provided)
  • Support communications when you contact us for help

Information Collected Automatically

When you use Macuse, we automatically collect certain information:

  • Device identifier - A unique identifier derived from your device's hardware characteristics, used for license validation and to identify free tier users
  • Usage statistics - Number of tool calls per day for free tier limit enforcement, stored locally on your device
  • Application settings - Your preferences and configuration, stored locally

Analytics Data

We use analytics services to improve our product. We collect:

  • Events: App launches, license activations, tool executions (category and type only), usage limit events
  • User properties: App version, license status
  • Licensed users only: Email and name (if provided during purchase) for customer support

Free tier users are identified only by device identifier. We do not create detailed person profiles for free users.

Error Tracking

We use error tracking services to monitor application crashes and errors:

  • Exception and crash reports
  • Error stack traces
  • Application version information

This helps us identify and fix bugs quickly.

macOS System Data (With Your Permission)

Macuse only accesses your macOS data when you explicitly grant permission:

  • Calendar events (when Calendar permission is granted)
  • Reminders (when Reminders permission is granted)
  • Contacts (when Contacts permission is granted)
  • Notes content (when Full Disk Access is granted)
  • Mail messages (when Full Disk Access is granted)
  • Messages (when Full Disk Access is granted)
  • Location (when Location Services permission is granted)
  • Application interfaces (when Accessibility permission is granted)

How Your Data Flows

To help you understand how your data is handled:

  1. You grant Macuse permission to access specific macOS apps (Calendar, Mail, etc.)
  2. Your AI client requests data through Macuse (e.g., "summarize my emails")
  3. Macuse retrieves the data locally from your Mac's apps
  4. The data is sent to your AI client, which may be:
    • A cloud-based AI service (e.g., Claude, ChatGPT) - data leaves your device
    • A local AI model (e.g., Ollama) - data stays on your device
  5. Macuse does not store or transmit this data to our servers

Your choice of AI client determines whether your data leaves your device.

How We Use Your Information

We use the information we collect to:

  • Provide core functionality of the application and AI integrations
  • Authenticate AI clients connecting to your local Macuse instance
  • Enforce usage limits for free tier users (100 tool calls per day, 1 connected client)
  • Validate premium licenses through our licensing service
  • Improve our product through anonymized analytics
  • Fix bugs and crashes through error tracking
  • Provide customer support when you contact us

Information Sharing and Disclosure

Third-Party Services

We use third-party services for:

  • License validation: License key and device identifier to validate your license
  • Analytics: Usage events and user properties as described above
  • Error tracking: Crash reports and error information
  • Auto-updates: Checks for app updates from our update server

AI Service Providers

When you connect Macuse to an AI client, your data is sent directly to that AI service. We recommend reviewing the privacy policy of your chosen AI provider:

No Personal Data Sharing by Macuse

Macuse never shares your personal content with our servers, including:

  • Calendar events, reminders, or notes content
  • Email or message contents
  • Contact information from your address book
  • Application interaction data captured via Accessibility

Data Security

We implement strong security measures to protect your information:

  • Local encryption for all stored data
  • Device-bound encryption - Encryption keys are derived from your device's unique identifier
  • Encrypted connections for all network communications
  • Secure authentication for client authorization
  • Minimal data transmission - Most data stays on your device

Your Rights and Choices

Access and Control

  • All your personal data (calendar, notes, etc.) is processed locally on your device
  • You can view and manage settings through the Macuse application
  • You can revoke macOS permissions at any time through System Settings
  • You can choose to use local AI models to keep all processing on-device

Data Deletion

  • Uninstall Macuse to remove all local data including the encrypted database
  • Contact us to request deletion of any data we may have about you

Data Retention

  • Local data is stored in an encrypted database until you delete the application
  • Usage counts are stored locally and reset daily at midnight UTC
  • License data is cached locally and revalidated periodically
  • Analytics and error data is retained according to our service providers' retention policies

macOS Permissions

Macuse requests the following macOS permissions based on features you use:

  • Accessibility - To inspect and control application interfaces
  • Calendar - To read and manage calendar events
  • Reminders - To read and manage reminder lists
  • Contacts - To search and read contact information
  • Location Services - To provide location-based features
  • Full Disk Access - To read Mail, Notes, and Messages databases
  • Automation - To control applications

These permissions are requested only when needed and can be revoked at any time through macOS System Settings.

App Sandbox

Macuse runs without the macOS App Sandbox to provide full system integration capabilities. This allows the app to interact with other applications and access system features required for its functionality.

Changes to This Privacy Policy

We may update this Privacy Policy occasionally. When we do, we'll update the "Last updated" date at the top of this page. We encourage you to review this Privacy Policy periodically.

Contact Us

If you have questions about this Privacy Policy or our privacy practices, please contact us at: