Comparison

Fluid Mechanics Calculator vs PFScan

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Fluid Mechanics Calculator

This app provides 97 calculators for fluid mechanics and civil engineering parameters. It supports both Imperial (USCS) and Metric (SI) units, offering automatic and accurate calculations with unit changes.

Highlights
  • 97 fluid mechanics and civil engineering calculators
  • Supports SI and USCS (Imperial) units
  • Automatic calculations with unit changes
  • Wide range of parameters covered
  • Civil engineering applications
Features
Read full description

Fluid Mechanics Calculator contains 97 calculators to compute different Fluid Mechanics and Civil Engineering parameters — now with a solve-for-any-variable engine: in every calculator, choose the value you want to find and enter the rest. Available in both USCS (Imperial Units) and SI (Metric Units). What's new in this version: • Filter calculators by category — pressure, open channel, pipe, groundwater, pump, and dimensionless numbers • Solve for any variable — pick the unknown in each calculator; no more fixed inputs and outputs • Share any calculation as an image Features: • 97 Fluid Mechanics and Civil Engineering calculators • Automatic, instant results on every value and unit change • USCS (Imperial) and SI (Metric) units throughout • Clear formulas and definitions for every calculator Calculator List: Absolute Pressure Brake Horsepower Bernoulli Theorem for Head Loss Bulk Modulus Buoyant Force Chezy Coefficient Chezy Velocity Compressibility External Hydrostatic Pressure Flow Rate Fluid Density with Pressure Fluid Pressure Hydraulic Radius Kinematic Viscosity Liquid Phase Diffusion Coefficient Pump Efficiency Manning Flow Velocity Mean Depth Minor Losses Net Positive Suction Head and Cavitation Specific Gas Constant Specific Gravity with Water Weight Specific Gravity with Water Weight Loss Specific Volume Thrust Block Water Horsepower Acoustic Flow Meter Bazin's Weir Flow Broad Crested Weir Curb Capture Flow Rate Curb Gutter Flow Rate French Drain Seepage Rate Gutter Capture Efficiency Gutter Carryover Gutter Interception Capacity Rectangular Weir Rectangular Weir Discharge - Francis Equation Orifice Flow Rate Parshall Flume Flow Rate Permeameter Porous Medium Flow Rate Unconfined Aquifer Well Flow Rate V notch Weir Venturi Meter for Flow Rate Hazen Williams - Fluid Flow Rate Hazen Williams - Mean Fluid Velocity Aluminum Pipe - Pressure Rating Buried Corrugated Metal Pipe Thrust - Cross Sectional Area Buried Corrugated Metal Pipe Thrust - Pipe Wall Buried Corrugated Metal Pipe Thrust - Pressure Ductile Iron Pipe - Pressure Ductile Iron Pipe - Wall Thickness Pipe Vacuum Pressure Load Pipe Water Buoyancy Factor Plastic Pipe - AWWA C900 Pressure Class Plastic Pipe - Inside Diameter Controlled Plastic Pipe - Outside Diameter Controlled Plastic Pipe - Outside Diameter Controlled Short Term Strength Plastic Pipe - Short Term Pressure Rating Slotted Pipe Gutter Interception Smooth Wall Steel Pipe - Pressure Rating Soil Load Per Linear Length of Pipe Restrained Anchored Pipe Stress Pipe Soil Weight Pressure Unrestrained Pipe Length Change Poiseuille's Law Stokes Law Cauchy Number Cavitation Number Eckert Number Euler Number Fourier Number Froude Number Knudsen Number Lewis Number Mach Number Prandtl Number Reynolds Number Schmidt Number Sherwood Number Nusselt Number Peclet Number Strouhal Number Threshold Odor Number Weber Number Darcy Weisbach - Head Loss Darcy's Law - Flow Rate Darcy's Law - Flux Darcy's Law - Hydraulic Gradient Darcy's Law - Porosity Darcy's Law - Saturated Soil Darcy's Law - Seepage Velocity Darcy's Law - Seepage Velocity and Porosity Darcy's Law - Void Ratio Water Hammer - Maximum Surge Pressure for a Fluid Water Hammer - Maximum Surge Pressure for Water Water Hammer - Maximum Surge Pressure Head Water Hammer - Pressure Increase

About

PFScan

Features
Read full description

Accessing the spec sheet of a gas pressure regulator has never been so easy. Pietro Fiorentini’s PFScan app gives you instant access to all your regulator's technical information, specific configuration data and spare parts details, all through your smartphone. Just download the app from the official stores and follow the simple instructions for registering your user.  In a few minutes you will have all the information you need about your regulators at your fingertips.

Screenshots

Fluid Mechanics Calculator4 screens
PFScan4 screens

Verdict

The call

The clearest difference is price: PFScan at Free against Fluid Mechanics Calculator's $2.99. PFScan also leads on update cadence (every 6 weeks vs every 7 months). On ads, in-app purchases, device support and iOS requirement there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

PFScan is free to download; Fluid Mechanics Calculator costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Fluid Mechanics Calculator ships an update every 7 months, PFScan every 6 weeks. The most recent releases landed on November 4, 2026 and November 3, 2026 respectively.

Scorecard2 real differences · 8 level
Fluid Mechanics Calculator versus PFScan: the parameters behind the verdict, then further details
ParameterFluid Mechanics CalculatorPFScan
Price$2.99Free — better
Rating4.5 (21 ratings) — better—
Positive reviews0.0% of reviews—
Number of ratings21 — better—
Update frequencyEvery 7 monthsEvery 6 weeks — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaid—
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS16.115.0 — better
Further details — not scored
Size11 MB3 MB
Age rating4+4+
DeveloperV PUGAZHENTHIPIETRO FIORENTINI SPA

In-app purchases

None

Fluid Mechanics Calculator

No in-app purchases

None

PFScan

No in-app purchases

Questions

Is Fluid Mechanics Calculator free?
Fluid Mechanics Calculator costs $2.99, with no in-app purchases.
Is PFScan free?
PFScan is free to download, with no in-app purchases.
Do Fluid Mechanics Calculator or PFScan have ads?
Neither Fluid Mechanics Calculator nor PFScan shows ads.
Which is updated more often, Fluid Mechanics Calculator or PFScan?
Fluid Mechanics Calculator ships an update every 7 months, and PFScan every 6 weeks. Most recently, Fluid Mechanics Calculator was updated on November 4, 2026 and PFScan on November 3, 2026.

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