VialMath, a protocol calculator that refuses to play doctor

Why it surfaced

VialMath turns a narrow, error-prone spreadsheet problem into a local-first tool with explicit constraints: no account, no cloud data, one activation check, and exports in JSON, CSV, and calendar formats. Its public test suite and reviewable decision logs make the unusual promise—protocol math, not medical advice—something readers can inspect rather than simply trust.

An offline calculator for reconstitution, syringe draw units, schedules, vial burn-rate, and reorder timing.