Show HN: Diagrammar – Mermaid, PlantUML, D2 and Graphviz Without a WebView

Category: devtools

Tags: diagrams, apple-platforms, offline, mermaid, plantuml, graphviz, native-app

Score: 5.7/10 (Innovation: 5, Technical: 7, Documentation: 6, Utility: 5)

Diagrammar is a native iOS/macOS app that renders Mermaid, PlantUML, D2, and Graphviz diagrams offline without a web view, built on a custom Swift diagram engine called DiagramKit. It offers live preview editing, Markdown inline rendering, and export features, targeting developers who want private, fast diagram viewing on Apple devices.

Target audience: developers, technical writers, devops engineers using Apple devices

Repository: https://apps.apple.com/us/app/diagrammar-mermaid-diagram/id6799964195

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