Elkhart Hard Facts Calculator is a free, all-in-one flow testing app developed by Elkhart Brass Mfg. This Android app is designed to provide firefighters and other professionals with all the necessary calculators needed for accurate flow testing in just one easy-to-use application.

This app includes calculators for smooth bore discharges and flow/pressure, nozzle reaction for both smooth bore nozzles and fog nozzles, pump discharge pressure for standard layouts, pump discharge pressure with elevation changes and appliances, pump discharge pressure for high-rise layouts, and fire flow formula calculators for both the NFA and Iowa formulas. The app also provides direct links to several Brass Tacks & Hard Facts videos, such as how to set up and calibrate a flowmeter for measuring nozzle pressure.

With its comprehensive set of calculators and instructional videos, Elkhart Hard Facts Calculator is an essential tool for flow testing and is highly recommended for all professionals in the field.