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How Stack Signal differs.
Volume delta is the tape. Volume profile is where volume already was. Typical add-ons often smooth or gate features. The Pulling & Stacking Indicator is the live book, decomposed, on every event.
Volume delta
Beyond volume delta.
Volume delta is aggressive flow only. Stack Signal adds the passive book — stacks and pulls — so Total Flow equals both, on every event.
Volume profileThe book, not the history.
Volume profile shows where volume already traded. Stack Signal shows what the book is doing now: liquidity stacking, pulling, and aggressive flow.
Order-flow add-onsNo smoothing. No feature gates.
Typical order-flow add-ons smooth, filter, or gate features by tier. Stack Signal is the raw stream, the same numbers on both platforms, no feature tiers.