Comparison

Fluid Mechanics Calc vs ProcessChem

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

Head to head
About

Fluid Mechanics Calc

This utility app provides a comprehensive calculator for fluid mechanics, civil, and structural engineering parameters. It offers over 130 formulas and 360 calculation methods, supporting seamless unit system switching for analysis, design, and operation of fluid-related systems.

Highlights
  • 130+ fluid mechanics formulas
  • 360+ calculation methods
  • Unit system conversion (metric/US)
  • Favorite formula marking
  • High mathematical precision
  • Seamless unit switching
Features
Read full description

The app is useful for the fluid thinkers. This app covers a wide variety of topics and helps in analysis, design, maintenance and operation of fluid related systems. The calculator will provide results for different fluid mechanics, civil, structural, pipe flow and engineering parameters. It is useful in the fields of automotive, aviation, geology, space, biological applications, petroleum, marine systems and cylinder manufacturing. This app comes handy to students, engineers, analysts, researchers and the curious. Here are the useful features of this app LISTS 130+ FORMULAE Memorizing hundreds of formula is not the way to go when it comes to learning fluid mechanics 360+ METHODS OF CALCULATION This calculator allows a user to change subject of formula based on the variable he/she wants to calculate. The formula applied is displayed in the app CALCULATE FOR ANSWERS Key in the numbers, set units and see results. Switch upto three conversion units. The app accepts input and provides results to the highest mathematical precision MARK FAVORITES Easy markups for easy recall HOP SEAMLESSLY BETWEEN BETWEEN METRIC AND US (INCH) UNIT SYSTEMS The app maintains separate functioning of these unit systems. The app has a predefined library of units designated to each of them It would be a good idea to kill the app and re-open it once in a while with the internet. We constantly strive to update, increase and enrich the content of the app. Go fluid with this app in your pocket!

About

ProcessChem

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ProcessChem puts a chemical engineer's property tables, equation-of-state solvers, and unit-operation calculators in your pocket — no spreadsheet, no lookup binder, no internet connection required. PROPERTY LOOKUPS Pull density, viscosity, thermal conductivity, heat capacity, vapor pressure, heat of vaporization, compressibility factor, and surface tension for thousands of pure chemicals and mixtures. Hazard and safety data included: flash point, flammability limits, exposure limits, and carcinogen/GWP/ODP flags. Also covers five common polymers (HDPE, LDPE, PP, PET, PVC) by repeat-unit mass, for property lookups and the Heater case. PHASE EQUILIBRIUM & FLASH CALCULATIONS Run flash calculations across any two-property target — temperature, pressure, enthalpy, entropy, internal energy, or volume — to find the resulting phase state and composition. Powered by CoolProp's reference-quality equations of state for over 100 fluids, with a Peng-Robinson backend covering the rest. REACTIONS & EQUILIBRIUM Balance chemical reactions automatically, track excess reagent and conversion, and run full energy balances. A dedicated equilibrium solver finds multi-species reaction composition at any temperature and pressure. An electrochemistry mode computes cell voltage and electron balances for electrolysis and battery chemistry. MULTI-COMPONENT MIXTURES Peng-Robinson with ChemSep binary interaction parameters, bubble/dew point calculations, and per-component hazard data — across every mode in the app. PROCESS ENGINEERING CASES - Heater: heats or cools a batch or stream at constant pressure — give a final temperature and get the duty, or give a duty and get the temperature reached, melting and boiling included - Vessel Heater: a sealed, rigid vessel heated or cooled — finds the resulting pressure, phase and liquid level, and flags the liquid-full overpressure hazard - Fluidized Bed: finds the minimum fluidization and blow-out velocities for your gas rate and the resulting pressure drop, with reacting-bed conversion and composition in both batch and continuous-flow modes - Heat Exchanger: two streams exchange heat — give the duty or one outlet temperature and it finds the rest, refusing any pairing that would need heat to flow backwards UNITS, YOUR WAY A dedicated Units tab lets you pick your preferred unit for every quantity in the app, with a configurable Normal/Standard reference for gas-volume conversions. Save any calculation to a file in Files or iCloud Drive, so your work survives even if you delete the app. Built for process, chemical, and plant engineers, students, and anyone who needs a real thermodynamic answer faster than a lookup table can give one.

Screenshots

Fluid Mechanics Calc4 screens
ProcessChem3 screens

Verdict

The call

The clearest difference is update cadence: ProcessChem at every 6 weeks against Fluid Mechanics Calc's every 22 months. ProcessChem also leads on iOS requirement (13.0 vs 15.6). On price, ads, in-app purchases and device support 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

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Fluid Mechanics Calc ships an update every 22 months, ProcessChem every 6 weeks. The most recent releases landed on November 12, 2026 and October 31, 2026 respectively.

Scorecard2 real differences · 7 level
Fluid Mechanics Calc versus ProcessChem: the parameters behind the verdict, then further details
ParameterFluid Mechanics CalcProcessChem
PriceFreeFree
Rating5.0 (3 ratings) — better—
Number of ratings3 — better—
Update frequencyEvery 22 monthsEvery 6 weeks — better
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.613.0 — better
Further details — not scored
Size108 MB407 MB
Age rating4+4+
DeveloperTrelleborg Sealing SolutionsRon Mangalam Jacob

In-app purchases

None

Fluid Mechanics Calc

No in-app purchases

None

ProcessChem

No in-app purchases

Questions

Is Fluid Mechanics Calc free?
Fluid Mechanics Calc is free to download, with no in-app purchases.
Is ProcessChem free?
ProcessChem is free to download, with no in-app purchases.
Do Fluid Mechanics Calc or ProcessChem have ads?
Neither Fluid Mechanics Calc nor ProcessChem shows ads.
Which is updated more often, Fluid Mechanics Calc or ProcessChem?
Fluid Mechanics Calc ships an update every 22 months, and ProcessChem every 6 weeks. Most recently, Fluid Mechanics Calc was updated on November 12, 2026 and ProcessChem on October 31, 2026.

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