# PrivyMermaid Pro: AI Diagram — Private AI Diagram Assistant > Private AI Diagram Assistant (iPhone/iPad app by GUOYU WANG.) - Source: https://appshunter.io/ios/app/privymermaid-pro-ai-diagram/id6759026916 (this page in markdown: same URL + `.md`) - Developer: [GUOYU WANG](https://appshunter.io/developer/1873302677) - Category: Developer Tools, Productivity - Price: $4.99 - Age rating: 4+ - Requires: iOS 16.0 · 38 MB - Languages: American English, French (France), German (Germany), Italian, Japanese, Korean, Brazilian Portuguese, Chinese (Simplified, China), European Spanish, Chinese (Traditional, Taiwan) - Released: 2026-02-17 - Data updated: 2026-09-03 - User reviews in markdown: https://appshunter.io/ios/app/privymermaid-pro-ai-diagram/id6759026916/reviews.md ## What is PrivyMermaid Pro? PrivyMermaid Pro combines offline Mermaid and D2 diagramming with private AI assistance from your own local LLM. Create, import, edit, organize, preview, and export diagrams on iPhone and iPad. The Mermaid and D2 renderers are bundled in the app, so diagrams preview without an internet connection. When you enable AI, PrivyMermaid Pro connects directly to the Ollama server you configure on your local network—your prompts and diagram source are not sent to a public rendering service. Pro Features: Private AI Assistance Generate diagrams: Describe a workflow or system in plain language and let your local AI create Mermaid or D2 source. Ask and fix: Ask about a diagram, repair invalid source, or refactor an existing diagram while preserving your intent. Local network connection: Connect to your Ollama server on your LAN (for example, http://192.168.1.x:11434). Streaming responses: Follow generated source as it arrives in the editor. Diagramming Features Included: Mermaid + D2: Create and preview two diagram languages locally, from flowcharts and sequence diagrams to D2 architecture diagrams. Projects and templates: Organize documents in projects and start from built-in Mermaid or D2 templates. Live preview and export: Choose a theme and background, then export Mermaid (.mmd) or D2 (.d2) source, SVG, PNG, PDF, or GIF. Optional Diagram Cloud sync: Sign in only if you want to sync diagrams to your Diagram Cloud account. Local copies remain available offline. Why PrivyMermaid Pro? Spend less time on diagram syntax and more time on the architecture. PrivyMermaid Pro keeps rendering offline and lets you choose when to use AI through your own local model. Requirement: A running instance of Ollama on your local network/machine is required to utilize the AI features. ## Version history (last 5 releases) ### 0.10.0 — 2026-08-26 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. Translated Pro workspace — Generate, Ask, and Fix, the local LLM setup, and Diagram Cloud sign-in and sync all read in your language, including their status and error messages. Per-app language picker — Settings ▸ Appearance ▸ Language lets you run PrivyMermaid Pro 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, projects, and cloud templates keep working unchanged when you switch languages. ### 0.9.0 — 2026-08-12 PlantUML support — Create, import, edit, preview, and export PlantUML diagrams alongside Mermaid and D2. Graphviz support — Create, import, edit, preview, and export Graphviz DOT diagrams alongside the other supported languages. Four diagram languages in one workspace — Start a new diagram in Mermaid, D2, PlantUML, or Graphviz. AI assistance for more diagram types — Use Ask, Fix, and Refactor with PlantUML and Graphviz source, as well as Mermaid and D2. Expanded file imports — Open PlantUML files such as .puml, .plantuml, .pu, and .uml, plus Graphviz files such as .dot, .gv, and .graphviz. Format-aware sharing and exports — Export PlantUML and Graphviz diagrams as SVG, PNG, PDF, or GIF, or share their source files in the matching format. Improved source highlighting — PlantUML and Graphviz source now have language-aware syntax highlighting. ### 0.8.1 — 2026-08-08 D2 diagram support — Create, import, edit, preview, and export D2 files alongside Mermaid diagrams. Projects and files — A new native Projects tab lets you create folders, search files, rename or delete diagrams, and move them between projects or Ungrouped. Diagram Cloud sign-in — Use a secure email link, GitHub, or Google to access Diagram Cloud. No keys or provider configuration are exposed in the app. Automatic cloud sync — Once signed in, local saves automatically update the corresponding Diagram Cloud diagram in your default Ungrouped project. Local work remains safe and available offline. Cloud-aware templates — Browse templates with purpose tags and a clear Mermaid or D2 language label. ### 0.8.0 — 2026-08-08 D2 diagram support — Create, import, edit, preview, and export D2 files alongside Mermaid diagrams. Projects and files — A new native Projects tab lets you create folders, search files, rename or delete diagrams, and move them between projects or Ungrouped. Diagram Cloud sign-in — Use a secure email link, GitHub, or Google to access Diagram Cloud. No keys or provider configuration are exposed in the app. Automatic cloud sync — Once signed in, local saves automatically update the corresponding Diagram Cloud diagram in your default Ungrouped project. Local work remains safe and available offline. Cloud-aware templates — Browse templates with purpose tags and a clear Mermaid or D2 language label. ### 0.7.3 — 2026-07-19 Custom AI endpoints — Connect to Ollama, LM Studio, or any custom OpenAI-compatible server by URL, with an optional API token stored securely in the device Keychain. Ask with images — Attach screenshots or photos to your questions and chat with vision-capable models about your diagrams. Formatted answers — AI responses now render as Markdown — headings, lists, code blocks, and tables — for easier reading. Reasoning-model support — Output from thinking models shows a collapsible "Thinking" section, keeping the final answer front and center. Reliable local-network connections — Reach your LAN or localhost Ollama / LM Studio server over HTTP without connection errors. Cleaner Settings & About — Simplified privacy summary, a built-in Privacy Policy link, and a dedicated About screen. Still 100% private — Your diagrams and prompts go only to the AI endpoint you configure. No cloud, no telemetry. ## More apps by GUOYU WANG - [PrivyMermaid: AI Diagram](https://appshunter.io/ios/app/privymermaid-ai-diagram/id6758518978) - [FlightLedger](https://appshunter.io/ios/app/flightledger/id6758533176) - [PrivyPDF: PDF Agent](https://appshunter.io/ios/app/privypdf-pdf-agent/id6758668283) - [PrivyFeed: News Butler](https://appshunter.io/ios/app/privyfeed-news-butler/id6758854675) - [Tenmo](https://appshunter.io/ios/app/tenmo/id6759307802) All apps by GUOYU WANG: https://appshunter.io/developer/1873302677 --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-09-03.*