Redstrings

Redstrings helps you map stories, build fictional worlds, and track investigations. Pin cards to a visual board and connect them with labeled strings. Add sources and notes to explain each connection, then mark how certain you are. Create unlimited boards for free. Your files stay on your Mac, with no account required. Work offline, then export your board as an image or Markdown report. Pro is a one-time $19.99 purchase. It adds custom card and relationship types, extra themes, and optional AI tools. There is no subscription.