Open or paste Mermaid, PlantUML, D2 or Graphviz DOT and get a real interactive diagram, rendered natively with no hidden WebView. Offline, no account, iCloud sync, Finder preview. Viewing is free; $14.99 once unlocks editing and export.
Most mind-map apps make you tap a tiny + button to add nodes. Converge replaces that with directional swipes: down for a child, right for a sibling, up to promote. Drop a PDF and AI builds the first map for you. Native iOS, built solo.
