Apps Like HydroCalc Basic for iPhone and iPad
Ranked alternatives
Showing 21–40 of 1,000 ranked alternatives.



NCalc Scientific Calculator +
Tran Duy
Calculate, graph, convert, solve
Allows users to perform complex calculations with a natural display that shows expressions as written. It supports fractions, roots, and exponents. The includes a graphing module for visualizing equations.

Duct Calculator Elite
Cyberprodigy LLC
Calculate size, velocity, and pressure drop
™ lets users input airflow, velocity, or friction to determine size. Calculate pressure drop and flow rate. Input dimensions for custom shapes. Export results and save calculations.


Pipe Flow Liquid Pipe Diameter
Daxesoft Ltd
Calculate for rate and pressure loss
Calculate minimum internal based on rate and maximum pressure loss. Input elevation changes and select valves and fittings. Display Reynolds number and friction factor. Export results in various formats.









Mila's Unit Converter PRO
Scott DeSapio
Convert units across 16 categories
Convert units across 16 categories with instant accuracy. Switch between hundreds of units for length, weight, temperature, and more. Calculate conversions for cooking, engineering, travel, and study.


Pipe Flow Gas Pipe Diameter
Daxesoft Ltd
Calculate for rate and pressure loss
Calculate minimum for gas based on rate and pressure loss. Use multiple equations including AGA, Panhandle A, and Weymouth. Automatically adjust for gas density with Ideal Gas Law and CNGA compressibility factor. Input parameters and view results.

Ductulator - Duct Sizing
Wassim Murr
Size ducts by friction rate or velocity
Calculate sizes for rectangular and circular ducts by inputting maximum friction rate or velocity. Switch between calculation methods by tapping values. Convert between I-P and S-I units using a toggle switch. Export results for reference.


Fluid Pressure Drop
Muralidhar Shenoy
Calculate loss for transmission
Calculate loss in transmission systems by selecting type, pipe material, and dimensions. Input pipe schedule and size to determine energy loss. Compare initial and operational costs for optimal pipe selection.
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