Privacy Policy — PrivyMermaid (iOS)

Last updated: May 2026

PrivyMermaid is a private, offline-first Mermaid diagram editor for iOS. We are committed to protecting your privacy. This policy explains how PrivyMermaid handles—or does not handle—your data.

1. User Data Collection

PrivyMermaid (iOS) 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 templates you write
• Prompts or text inputs sent to the local AI assistant
• Usage metrics, behavior tracking, or crash logs
• Device configuration details or location telemetry

2. User Data Handling

All diagram creation, rendering, and AI operations are processed entirely on your local device or network:

• Diagram Rendering: Diagram source code compilation and rendering use a bundled offline Mermaid library within a local sandboxed WebView. No remote rendering services are contacted.
• Local AI Inference (Pro Version): If you configure an optional local Ollama server, the app connects to this instance over your local area network (LAN) using a configurable local address (e.g., http://192.168.1.x:11434). All text-to-diagram prompts and fixes are processed locally on your server. No data is sent to external AI service APIs (such as OpenAI, Anthropic, or Google) or third-party servers.

3. User Data Storage

All application documents, diagrams, and editor settings are stored locally on your device:

• Diagrams: Your diagram names, source files, and timestamps are saved in the app's sandboxed filesystem.
• App settings: Theme selections, local Ollama URLs, and editing preferences are saved locally in the standard iOS UserDefaults.
• Exported files: Generated SVG, PNG, and .mmd files are saved within your device's files system and shared only via the iOS share sheet.

This data is accessible only to this application. You can delete individual diagrams/settings in the app, or uninstall the app to delete all local data.

4. User Data Sharing

We do not share, sell, or transmit any data to any party. PrivyMermaid operates entirely offline (except for local Ollama network calls in the Pro version). No analytics or tracking SDKs are integrated into the application.

5. Contact Information

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

• Email: support@kenelite.com
• Bundle ID (Free): com.kenelite.privymermaid
• Bundle ID (Pro): com.kenelite.privymermaid.pro
• GitHub: github.com/kenelite/privacypolicy

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

PrivyMermaid — Private, Offline-first Mermaid Diagram Editor for iOS