# Hydrant Flow Test Calculator — Compute hydrant flow test data > Calculates hydrant flow test data, including pitot pressures, outlet settings, and flow extrapolation. (iPhone/iPad app by Saleel Anthrathodiyil.) - Source: https://appshunter.io/ios/app/hydrant-flow-test-calculator/id6759503350 (this page in markdown: same URL + `.md`) - Developer: [Saleel Anthrathodiyil](https://appshunter.io/developer/1879071811) - Category: Productivity - Price: Free - Rating: 5.00/5 from 3 App Store ratings · 2 written reviews indexed - Age rating: 4+ - Requires: iOS 15.1 · 38 MB - Languages: English - Released: 2026-02-24 - Data updated: 2026-07-25 - Monetization: free - User reviews in markdown: https://appshunter.io/ios/app/hydrant-flow-test-calculator/id6759503350/reviews.md ## What is Hydrant Flow Test Calculator? Hydrant Flow Test Calculator is a field-friendly calculation and reporting tool for fire protection professionals, engineers, inspectors, contractors, and AHJs who need to evaluate and document hydrant flow test results. The app helps calculate hydrant flow from field readings, compare available water supply against system demand, estimate downstream friction loss, and export professional PDF reports. Key features: • Calculate hydrant flow using static pressure, residual pressure, pitot pressure, outlet diameter, and discharge coefficients • Calculate total test flow and flow at a target residual pressure • Compare available supply against system or pump demand • Review demand pass/fail results with available pressure and safety cushion • View Supply vs Demand graph with demand point legend • Save completed test records to History • Add project information including associate, project number, project location, test hydrant tag, and flow hydrant tag • Optionally capture test hydrant and flow hydrant coordinates • Attach an image to a saved test record • Export PDF reports with project details, test summary, demand results, graph, location details, friction loss results, and attachment • Estimate friction loss using pipe product, nominal pipe size, inside diameter, pipe length, C-factor, elevation, minor loss, and device/backflow loss • Supports US and SI flow display The Friction Loss tool includes pipe product and nominal pipe size selection with automatic inside diameter lookup. Elevation guidance helps users enter positive values for uphill and negative values for downhill conditions. Hydrant Flow Test Calculator is designed to make field calculations faster, improve documentation consistency, and help organize hydrant flow test information in one place. This app is intended as a calculation and documentation aid. Users are responsible for verifying all inputs, assumptions, calculations, and results according to applicable codes, standards, project requirements, and professional judgment. ## Key features - Calculate total GPM from pitot pressures - Configure outlet diameter and hydrant coefficients - Extrapolate flow with Supply vs Demand curve - Plot demand points for PASS/FAIL analysis - Save test results with date, time, and project info - Log hydrant locations via GPS - Review saved test history ## Recent user reviews (2 of 2) All indexed reviews: https://appshunter.io/ios/app/hydrant-flow-test-calculator/id6759503350/reviews.md ### 5/5 — Useful calculator *2026-03-02* Useful to do a quick calculation at the site ### 5/5 — Very useful *2026-02-25* Love that the app is not clumsy and the ability to store test information. ## Frequently asked questions about Hydrant Flow Test Calculator ### How does Hydrant Flow Test Calculator calculate total GPM? Hydrant Flow Test Calculator sums the flows from two pitot inputs to determine the total GPM observed during the flow test. It also considers outlet settings like diameter and hydrant coefficients. ### Can I save my hydrant flow test results? Yes, you can save test information including date, time, project details, and the GPS location of the hydrants. This allows for easy review of past tests and results. ### What kind of analysis does Hydrant Flow Test Calculator offer? The app provides flow extrapolation by displaying a Supply vs Demand curve (Flow vs PSI). You can also plot up to two demand points to see PASS/FAIL results. ### Is Hydrant Flow Test Calculator available on Android? Based on the provided data, Hydrant Flow Test Calculator is designed for iPhone, iPad, and iPod. Platform compatibility for Android is not specified. ### How often is Hydrant Flow Test Calculator updated? The latest version is 1.2.0(6), updated on March 2, 2026. This indicates recent development activity, suggesting regular updates are likely. ### What is the age rating for Hydrant Flow Test Calculator? Hydrant Flow Test Calculator has an age rating of 4+, making it suitable for a wide range of users. ### Does Hydrant Flow Test Calculator have ads? No, Hydrant Flow Test Calculator does not contain advertisements. It is a free application without any ad interruptions. ### What is the user sentiment for Hydrant Flow Test Calculator? The app has a perfect rating of 5.0 stars from 1 review, indicating highly positive user sentiment based on available data. ## Version history (last 3 releases) ### 1.3.0 — 2026-05-06 This update includes improved PDF reports, enhanced Friction Loss calculations, and better field documentation. New and improved: - Added Test Hydrant Number/Tag and Flow Hydrant Number/Tag fields. - Updated Friction Loss pipe selection with product-based nominal pipe size lookup. - Added clearer elevation guidance for uphill and downhill conditions. - Added Supply vs Demand graph legends. - Improved PDF reports with repeated watermark, bold footer, attachment label, hydrant location labels, and better file naming. - Removed unnecessary default zero values from user-entered fields. - General UI and workflow improvements. ### 1.2.0(6) — 2026-03-02 Minor UI improvements and creator information ### 1.1.0 — 2026-02-24 No release notes. ## Related topics [hydrant flow test calculator](https://appshunter.io/ios/topics/hydrant-flow-test-calculator) · [hydrant](https://appshunter.io/ios/topics/hydrant) · [fire hydrant](https://appshunter.io/ios/topics/fire-hydrant) --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-07-25.*