# MermaidStudio — Native Mermaid diagram editor > Native Mermaid diagram editor for creating flowcharts, sequence diagrams, and more. (iPhone/iPad app by 立河 吴.) - Source: https://appshunter.io/ios/app/mermaidstudio/id6802345365 (this page in markdown: same URL + `.md`) - Developer: [立河 吴](https://appshunter.io/developer/6802151458) - Category: Productivity, Developer Tools - Price: Free with in-app purchases - Rating: 5.00/5 from 1 App Store ratings · 1 written reviews indexed - Age rating: 4+ - Requires: iOS 18.0 · 6 MB - Languages: American English - Released: 2026-09-27 - Data updated: 2026-10-31 - Monetization: freemium - User reviews in markdown: https://appshunter.io/ios/app/mermaidstudio/id6802345365/reviews.md ## What is MermaidStudio? MermaidStudio is a native Mermaid diagram editor for product managers, architects, and developers. Create maintainable diagrams with familiar Mermaid syntax on Mac, iPad, and iPhone. On Mac and iPad, write code on one side and see a live preview on the other. On iPhone, switch between the editor and a full-screen preview with a tap or a swipe. Unfold iPhone Duo to see both at once. Build flowcharts, sequence diagrams, class diagrams, state diagrams, and more—then export the whole diagram, ready to share. Key features: • Native code editor with Mermaid syntax highlighting and Tab completions • Live preview with zoom for complex diagrams • Export the full diagram as PNG, PDF, or offline HTML, regardless of preview zoom or scroll • iCloud sync for your library across Mac, iPad, and iPhone Start for free: • Create up to 3 diagram files • Export PNG, PDF, and offline HTML • Use iCloud sync across Mac, iPad, and iPhone Upgrade to MermaidStudio Pro with a one-time purchase—no subscription: • Unlimited files and top-level folders • Trash for restoring deleted diagrams • Open and edit external Mermaid source files • Copy diagrams as images to the system clipboard • Share PNG files from iPhone and iPad • One purchase works on Mac, iPad, and iPhone Requires macOS 15.0 or later, iPadOS 18.0 or later, or iOS 18.0 or later. ## Key features - Native Mermaid code editor - Live diagram preview - Export diagrams as PNG, PDF, HTML - iCloud sync across devices - Unlimited diagrams with Pro upgrade ## Pricing and in-app purchases Base price: Free. **One-time purchases** | Purchase | Price | Type | | --- | --- | --- | | MermaidStudio Pro | $5.99 | one-time | ## Is MermaidStudio safe? Not enough ratings yet to assess MermaidStudio. ## Is MermaidStudio legit? MermaidStudio has limited verification signals. The AppsHunter Legitimacy Score for MermaidStudio is 58 out of 100 points across 7 verification signals from App Store and developer data. ## Recent user reviews (1 of 1) All indexed reviews: https://appshunter.io/ios/app/mermaidstudio/id6802345365/reviews.md ### 5/5 — Useful function to open md file *2026-10-19* It is true that AI has changed our way in work. using mermaid editor to work with AI is my daily work. With the new version I can edit the mermaid file which created by AI agents ## Frequently asked questions about MermaidStudio ### What types of diagrams can I create with MermaidStudio? MermaidStudio allows you to create various diagrams including flowcharts, sequence diagrams, class diagrams, and state diagrams using the familiar Mermaid syntax. ### How does MermaidStudio sync diagrams across devices? The app utilizes iCloud sync to seamlessly share your diagram library across your Mac, iPad, and iPhone, ensuring your work is always up-to-date. ### What are the limitations of the free version of MermaidStudio? The free version of MermaidStudio allows you to create up to 3 diagram files and export them as PNG, PDF, and offline HTML, with iCloud sync also available. ### What benefits does the MermaidStudio Pro upgrade offer? MermaidStudio Pro, a one-time purchase, unlocks unlimited diagram files and folders, a trash feature for restoring deleted diagrams, and the ability to open and edit external Mermaid source files. ### What export formats are available in MermaidStudio? You can export your diagrams as PNG, PDF, or offline HTML files. These exports are ready to share and are not affected by preview zoom or scroll settings. ### What are the system requirements for MermaidStudio? MermaidStudio requires macOS 15.0 or later, iPadOS 18.0 or later, or iOS 18.0 or later to function correctly on your devices. ### Does MermaidStudio have ads? No, MermaidStudio does not contain advertisements. The application is free to start with optional in-app purchases for advanced features. ### How frequently is MermaidStudio updated? The latest version, 1.2.0, was released on October 24, 2026, indicating active development and regular updates for the application. ## Version history (last 3 releases) ### 1.2.0 — 2026-10-24 This version supports iPhone, including iPhone Duo. Edit, preview, and export the same diagrams you already use on iPad. One Pro purchase covers Mac, iPhone, and iPad. ### 1.1.0 — 2026-10-19 New in 1.1 — external files with MermaidStudio Pro: • Open Markdown, .mmd, and plain-text files from disk • Edit the Mermaid source in place and save back to the original file • External files stay outside your MermaidStudio library and do not count toward the free file limit • Auto-save after editing, with manual Save available when you need it ### 1.0 — 2026-09-28 No release notes. ## Related topics [mermaid diagram](https://appshunter.io/ios/topics/mermaid-diagram) --- *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 2026-10-31.*