Added a link to TradeTools — the one-app version of this calculator and 61 more, for HVAC, electrical, plumbing, fire protection, solar and carpentry. Nothing else changed.
Only the current version so far — new entries appear as the app ships updates.
Hazard Classification NFPA 13 is a tools app by Rizvan Adzhoyan with 10+ downloads (about 27 estimated). +1 installs in the last 7 days. Released Sep 8, 2026. Install growth, rank history, SDKs and ad networks.
From the store listing: “NFPA 13 light, ordinary and extra hazard: density, remote area, storage.”
