A private operating system for a family office.

Sterling

Sterling is a private operating system for a family office: it holds ownership, planning, reporting, and long-range decisions for a whole family — every owner, entity, account, property, and private holding, resolved to one balance sheet. Harmonyc designed and built the product end to end.

Product design, design system, frontend and creative engineering, data architecture, and the full application.

Shown with a synthetic family and invented figures. No client data appears.

A demo reel of the shipped interface, running on the synthetic family.

An ownership graph tracing a holding company through trusts and entities to each account and property it holds. — Look-through ownership: every trust and entity, traced to the assets it holds.

A capital map breaking a family portfolio into investments, real estate, and private assets by class. — The capital map reads the whole balance sheet by class in one pass.

A Monte Carlo sustainability chart with an outcome fan and a depletion-year distribution. — Monte Carlo runs thousands of paths to ask whether the portfolio outlasts the spending.