Privacy Policy — PrivyMermaid (macOS)

Last updated: May 2026

This Privacy Policy describes how PrivyMermaid ("the App") handles information when you use the macOS application. The App is designed with privacy in mind: we do not collect, transmit, or sell your personal data.

1. User Data Collection

PrivyMermaid (macOS) does NOT collect, harvest, or transmit any personal or sensitive user data.

Specifically, the app does not collect:

• Personal identifiers (name, email, account details)
• Mermaid diagram source code, notes, or prompts you write
• Your device's location data (no location permissions are requested)
• Usage statistics, user behavior tracking, or telemetry
• Crash reports or system logs

2. User Data Handling

All diagram editing, compiling, rendering, and AI operations are processed locally on your Mac:

• Diagram Rendering: Compilation of your Mermaid diagram source code runs offline using local library resources. No cloud rendering engines or external servers are contacted.
• Local AI Inference: If you configure the optional Ollama integration, the app communicates directly with your locally-running Ollama instance (by default at http://localhost:11434). All diagram-generation prompts are processed entirely on your machine.
• File System Access: The app reads and writes files only when you explicitly invoke file import/export features via macOS sandbox user-selected file permissions.

3. User Data Storage

All application diagrams, editable prompt templates, and settings are saved strictly on your local storage:

• Diagrams & Settings: Your saved diagrams, prompt templates, and preferences are saved locally on your Mac in the standard Application Support container directory (~/Library/Application Support/com.kenelite.privymermaidmac/).

This data remains fully under your control. You can delete this data at any time by deleting individual diagrams in the editor, deleting the Application Support directory, or uninstalling the app.

4. User Data Sharing

We do not share, sell, or disclose your data to anyone. Since PrivyMermaid does not collect any of your information or host any remote backend servers, it is technically impossible for us to share or disclose your data with third parties.

5. Contact Information

For privacy-related questions, support, or inquiries, please contact us:

• Email: support@kenelite.com
• GitHub: github.com/kenelite/privacypolicy

PrivyMermaid (macOS) is a non-commercial product; we do not guarantee response times.

PrivyMermaid is a macOS application for editing and previewing Mermaid diagrams, with optional local AI assistance via Ollama.