PrivyMermaid (iOS) — Support

Private, Offline-first Mermaid Diagram Editor for iPhone & iPad

This document covers how to get help, frequently asked questions, and troubleshooting for PrivyMermaid on iOS.

About PrivyMermaid (iOS)

PrivyMermaid is a private, offline-first Mermaid diagram editor for iPhone and iPad. Write, edit, and preview Mermaid diagrams entirely on your device—no cloud, no tracking, no account required.

Frequently Asked Questions

How do I create a new diagram?

Tap the + button in the toolbar
Enter a name for your diagram
Tap Create
Start writing Mermaid code in the Source tab
Switch to the Preview tab to see your diagram

How do I export a diagram?

In the Preview tab, tap the share/export button to choose your export format:

Export SVG — Scalable vector graphics
Export PNG — Raster image
Export Mermaid (.mmd) — Source code file

Exported files are shared via the standard iOS share sheet, letting you save, send, or open them in other apps.

What Mermaid diagram types are supported?

Flowcharts
Sequence diagrams
Gantt charts
Class diagrams
State diagrams
Entity Relationship diagrams
Pie charts
And more standard Mermaid types

How do I change the diagram theme?

In the Preview tab, use the theme selector to choose from: Default, Dark, Forest, or Neutral.

Where is my data stored?

All diagrams and settings are stored locally in the app's sandboxed storage on your iPhone or iPad. Nothing is sent to external servers.

System requirements

iOS 17.0 or later
iPhone or iPad
Ollama (optional, for Pro AI features): A running instance on your local network — ollama.ai

PrivyMermaid Pro

What do I get with PrivyMermaid Pro?

PrivyMermaid Pro unlocks AI-powered diagramming features:

Ask — Generate Diagrams: Describe what you need in plain English and the AI creates the Mermaid code
Fix — Auto-correct: Let the AI fix syntax errors and optimize diagram layouts
LAN Ollama: Connect to your self-hosted Ollama server on your local network
Streaming: Watch AI responses stream in real-time as your diagram is generated

How do I set up Ollama for Pro features?

Install Ollama on a computer on your local network (Mac, Linux, or Windows)
Pull a model: ollama pull llama3.2 (or another chat model)
In PrivyMermaid settings, enter your Ollama server address (e.g., http://192.168.1.x:11434)
Make sure your iPhone/iPad and the Ollama machine are on the same network

Why can't I connect to Ollama?

Common issues:

Ensure your iOS device and Ollama machine are on the same Wi-Fi network
Check that Ollama is running and accessible at the configured address
Verify the port is correct (default: 11434)
Some routers block local device communication — check your router's "client isolation" or "AP isolation" settings

Does PrivyMermaid Pro use the cloud?

No. Pro features connect only to your local Ollama server. Your prompts, diagrams, and AI responses never leave your local network.

Contact Us

For support, bug reports, or feature requests:

Feedback & Issues: Submit Feedback or Report a Problem