Comparison

Fluid Mechanics Calculator vs Vector Calculator Plus

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

Vector Calculator Plus

This app simplifies vector addition for students and educators. It allows for quick calculations of multiple vectors, visualizing the results with generated graphs. Users can customize graph elements and save images for later use.

Highlights
  • Instant vector calculation
  • Add multiple vectors by x, y, magnitude, or angle
  • Generate vector images
  • Save vector images to camera roll
  • Customize graph display options
  • Set background color for graphs
Features
Read full description

Vector Calculator is math calculator to find vector addition fast and easy. Vector Calculator give operation of adding two or more vectors together into a vector sum. The parallelogram law gives the rule for vector addition of two or more vectors. Features: • Instant vector calculation. • Add multiple vector by x, y, magnitude or angle. • Vector Image is generated upon calculation. • Save Vector Image into camera roll. • Option to show/hide Grid, Indicator, Label, Vector Label or Magnitude Label for Vector Graph. • Option to enable/disable Background for Vector Graph. • Option to set Background Colour for Vector Graph. A Vector has magnitude [size] and direction. No matter which order you add them, you will get the same result. Magnitude of a Vector: The magnitude of a vector is shown by two vertical bars on either side of the vector |a| Adding Vectors: Vectors can add by adding the x parts and adding the y parts: Example: add the vectors a = (2,3) and b = (4,5) |a+b| = |a| + |b| |a+b| = (2,3) + (4,5) = (2+4,3+5) = (6,8) Common examples of vectors are force and velocity. Both force and velocity are in a particular direction. The magnitude of the vector would indicate the strength of the force or the speed associated with the velocity. Vector Calculator is useful for math teachers, educator, or anyone who want to prepare vector math material for teaching. Also for students who need to learn more detail or understanding of math vector addition operation. Thanks for your support and do visit nitrio.com for more apps for your iOS devices.

Screenshots

Fluid Mechanics Calculator4 screens
Vector Calculator Plus4 screens

Verdict

The call

The clearest difference is rating: Fluid Mechanics Calculator at 4.5 against Vector Calculator Plus's 2.5. Fluid Mechanics Calculator also leads on update cadence (every 7 months vs every 43 months) and ratings volume (21 vs 2). Vector Calculator Plus's advantage is iOS requirement (13 vs 16.1). On price, review sentiment, ads and in-app purchases 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

Fluid Mechanics Calculator costs $2.99 and Vector Calculator Plus $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

Fluid Mechanics Calculator holds the better App Store score, 4.5 against 2.5. That said, the two scores are not equally well evidenced: Fluid Mechanics Calculator has 21 ratings behind it against 2, so its average is the more settled of the two. Written reviews split almost evenly too, at 0% and 0% positive.

UpkeepUpdate frequency

Fluid Mechanics Calculator ships an update every 7 months, Vector Calculator Plus every 43 months. Both last shipped on October 24, 2026.

Scorecard4 real differences · 6 level
Fluid Mechanics Calculator versus Vector Calculator Plus: the parameters behind the verdict, then further details
ParameterFluid Mechanics CalculatorVector Calculator Plus
Price$2.99$2.99
Rating4.5 (21 ratings) — better2.5 (2 ratings)
Positive reviews0.0% of reviews0.0% of reviews
Number of ratings21 — better2
Update frequencyEvery 7 months — betterEvery 43 months
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS16.113 — better
Further details — not scored
Size11 MB1 MB
Age rating4+4+
DeveloperV PUGAZHENTHIHeng Jia Liang

Customer experience

Fluid Mechanics Calculator

All ratings21 ratings
Positive85.7%
Neutral9.5%
Negative4.8%
Written reviews3 reviews
Positive0.0%
Neutral33.3%
Negative66.7%

Vector Calculator Plus

All ratings2 ratings
Positive50.0%
Neutral0.0%
Negative50.0%
Written reviews1 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

In-app purchases

None

Fluid Mechanics Calculator

No in-app purchases

None

Vector Calculator Plus

No in-app purchases

Questions

Is Fluid Mechanics Calculator free?
Fluid Mechanics Calculator costs $2.99, with no in-app purchases.
Is Vector Calculator Plus free?
Vector Calculator Plus costs $2.99, with no in-app purchases.
Which has better reviews, Fluid Mechanics Calculator or Vector Calculator Plus?
Fluid Mechanics Calculator is rated higher. Fluid Mechanics Calculator averages 4.5 out of 5 from 21 ratings, while Vector Calculator Plus averages 2.5 from 2 ratings.
Do Fluid Mechanics Calculator or Vector Calculator Plus have ads?
Neither Fluid Mechanics Calculator nor Vector Calculator Plus shows ads.
Which is updated more often, Fluid Mechanics Calculator or Vector Calculator Plus?
Fluid Mechanics Calculator ships an update every 7 months, and Vector Calculator Plus every 43 months. Most recently, Fluid Mechanics Calculator was updated on October 24, 2026 and Vector Calculator Plus on October 24, 2026.

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