SankeyFlow Makes Flow Diagrams a Native Mac Document

Field notes

The app accepts flow data as typed lines such as “Wages [3000] Budget,” as rearrangeable source-amount-target rows, or through pasted and imported spreadsheet files. Its documents use a readable .sankey plain-text format rather than a proprietary container, and exports can be sized by aspect ratio or exact pixel dimensions. The site states that all processing remains on the Mac, with no network connections, accounts, analytics, crash reporting, advertising, or third-party services.