PrivyMermaid: AI Diagram

PrivyMermaid: AI Diagram

Generate, Fix & Edit Diagrams

0 ratings
1 review
Free

Details

  • Released
  • Updated
  • February 5, 2026
  • July 19, 2026

Features

PrivyMermaid: AI Diagram screenshot #1 for iPhone
PrivyMermaid: AI Diagram screenshot #2 for iPhone
PrivyMermaid: AI Diagram screenshot #3 for iPhone
PrivyMermaid: AI Diagram screenshot #4 for iPhone
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About

This privacy-focused editor allows developers and technical writers to create, edit, and preview diagrams completely offline. Your sensitive data remains on your device, ensuring maximum security and control over your diagrams.

100% Private & Offline diagram editing
Instant offline diagram rendering
No cloud sync for enhanced data privacy
Live preview of diagram changes
Multiple theme selections
Full Mermaid syntax support
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+1

What's New in PrivyMermaid

0.7.3

July 19, 2026

- **Unlock Pro inside the app** — A one-time in-app purchase unlocks every Pro feature, and "Restore Purchases" brings them back on your other devices. - **More AI backends (Pro)** — Once unlocked, connect to Ollama, LM Studio, or any custom OpenAI-compatible endpoint, with an optional API token stored securely in the device Keychain. - **Ask with images (Pro)** — Attach screenshots or photos to your questions and chat about them with vision-capable models. - **Nicer AI answers (Pro)** — Responses now render as formatted Markdown, with a collapsible "Thinking" section for reasoning models. - **Refreshed chat (Pro)** — Your messages appear on the right as "You", with clearer, simplified messages when a server can't be reached. - **Cleaner Settings & About** — Simplified privacy summary, a built-in Privacy Policy link, and a dedicated About screen. - **Private and offline as always** — Diagrams stay on your device. No accounts, no tracking, no telemetry.

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User reviews

Good Idea, but missing one crucial feature

I had to delete the app because it was missing one crucial feature. However, I’m still leaving 4 stars since the app in the current state is built well and that missing feature could be implemented very easily in future.

The missing feature is: *allow users to zoom in and move preview canvas around*. Ideally, you would also allow to move nodes around, but I understand that this could be a bit more difficult to implement.

My diagrams were a bit complicated and big, so the entire canvas zoomed out too much, making things unreadable.
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Developer apps

FAQ

Does PrivyMermaid have ads?

No, PrivyMermaid is completely ad-free, allowing for an uninterrupted user experience.

What devices does PrivyMermaid support?

PrivyMermaid is available on macOS, iPhone, and iPad, providing flexibility for users across different Apple platforms.

How often is PrivyMermaid updated?

The latest version is 0.7.3, and the app was last updated on July 19, 2026, indicating active development and maintenance.

What is the age rating for PrivyMermaid?

PrivyMermaid has an age rating of 4+, making it suitable for a wide range of users, including younger developers and students.

Can I generate diagrams with AI in PrivyMermaid?

The free version of PrivyMermaid offers standard live preview for manual edits. For AI-assisted diagram generation and refactoring using local LLMs, the Pro version is available.

What types of diagrams can I create with PrivyMermaid?

PrivyMermaid supports full standard Mermaid syntax, including Flowcharts, Sequence diagrams, Gantt charts, and more, allowing for diverse diagram creation.

Is PrivyMermaid suitable for proprietary systems?

Yes, PrivyMermaid is designed for security-conscious users and works completely offline, ensuring that sensitive architecture diagrams and proprietary system information never leave your device.