--- title: "Plumbing Formulator — App Overview" url: https://marlvel.ai/apps/plumbing-formulator category: Productivity developer: Historycentral.com platforms: ios rating: 4.6 (7 ratings) pricing: free report_level: overview generated: 2026-04-28 last_verified: "2026-04-28T11:53:24.972Z" --- > **Key Insight:** While the app promises a comprehensive suite of technical calculators, user reviews consistently report inaccurate results and a lack of educational transparency. | Metric | Value | |--------|-------| | Category | Productivity | | Rating | 4.6 ★ (7) | | Pricing | free | | Platforms | iOS | | Latest Version (iOS) | 6.0.1 | | Developer | Historycentral.com | ## What is Plumbing Formulator? Plumbing Formulator is a productivity tool designed to provide over 200 plumbing and HVAC calculations, including water flow, pipe sizing, and drainage metrics. The app aims to serve as a mobile reference for mechanical contractors, though user feedback indicates significant concerns regarding calculation accuracy and content transparency. ## Key Features - **Water Flow and Supply**: Calculates pipe velocity, volume flow rate, and fixture unit demand for water supply sizing. - **Pipes and Piping**: Determines pipe area, weight, friction loss via Hazen-Williams, and offset calculations for 45-degree bends. - **Drainage and Venting**: Sizes drain and vent pipes while calculating slope, fall, and drainage fixture units. ## Who is it for? Professional plumbers, HVAC technicians, and mechanical contractors. ## Links - [App Store](https://apps.apple.com/us/app/plumbing-formulator/id303497783?uo=4) - [Full Intelligence Report](https://marlvel.ai/apps/plumbing-formulator) --- *This is an overview report. Sentiment analysis, competitive landscape, and SWOT analysis are available in the [full intelligence report](https://marlvel.ai/apps/plumbing-formulator).* *Generated by [Marlvel.ai](https://marlvel.ai) — Independent app intelligence.*