PruneChart is a calculating canvas, not a drawing tool. Here's the full toolkit, from the symbol set to the Lean math.
Processes, grouped modules, inventory triangles, suppliers, customers, kanban, supermarkets, FIFO lanes, kaizen bursts, trucks — the canonical VSM symbol set.
Pull symbols from the palette (or double-click to place), then wire them with typed, snapping arrows — push, finished-goods, electronic and manual info flows.
Group a cluster of processes into one Module; its C/T, P/T and Operators roll up automatically, and you can explode it back onto the canvas to edit.
C/T, P/T, changeover, uptime, operators, batch size, inventory — the fields every practitioner needs, on every process.
Add your own metrics and reference other fields with {C/T} syntax. Everything recomputes live across the map as you type.
Full-screen, sortable grids of every process and field — edit in a spreadsheet-style view when that's faster.
Set your Takt time and any step slower than it turns red instantly — the single most important diagnostic in a VSM.
The bottom strip totals value-add time against wait time, computes lead time and process cycle efficiency, and updates as you map.
Available time ÷ demand, in per-shift, weekly or batch modes — stored on the diagram and driving the above-Takt logic.
Clone your current-state map into a linked future state, design the improvement, and compare them side by side in split view.
Invite people as viewer or editor, or open a signed-in link — access is enforced at the database, not just the URL.
Every save is a revision you can preview read-only and restore — plus PNG, JPEG, PDF, CSV and print export.
Start free — the full calculating canvas is in every plan.
Start mapping free →