PrivyMermaid: AI Diagram

PrivyMermaid: AI Diagram

Generate, Fix & Edit Diagrams

0 ratings
1 review
Free
In-App Purchases

Details

  • Released
  • Updated
  • February 5, 2026
  • August 26, 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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What's New in PrivyMermaid

0.10.0

August 26, 2026

Ten languages — The interface is now translated into English, Spanish, French, German, Brazilian Portuguese, Japanese, Korean, Simplified Chinese, Traditional Chinese, and Italian. Translated template library — Every template category, name, and description is translated, so browsing for the right starting point works in your language too. Per-app language picker — Settings ▸ Appearance ▸ Language lets you run PrivyMermaid in a language of its own, independently of the rest of your device. Choose System to follow your device setting. Sensible language matching — Regional variants land where you would expect: Traditional Chinese for Taiwan, Hong Kong, and Macau, and Brazilian Portuguese for other Portuguese regions. Your diagrams stay yours — Diagram source is never translated, and existing diagrams and projects keep working unchanged when you switch languages.

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In-App Purchases

$9.99

native macOS version

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.