Offline calculators for FOH and monitor engineers, system techs, studio engineers and musicians. Every result shows its formula, the substituted values and any warnings.
packages/engine — pure TypeScript calculation engine (SI inside, never throws, fully tested).apps/web — React + Vite installable PWA that renders every calculator from the engine registry.SPEC.md is the source of truth; CLAUDE.md has the working rules.
pnpm install
pnpm --filter @pac/web dev # http://localhost:5173
pnpm lint && pnpm typecheck && pnpm test && pnpm build
pnpm coverage # engine coverage (≥ 90% lines)
pnpm --filter @pac/web storybook # primitives sandbox