Best Flow Rate Calculator Alternative Apps

221+ iOS apps curated and reviewed

4.6 avg rating
16 free apps
Updated June 2026

Finding the right flow rate calculator alternative app can be overwhelming with so many options. We've analyzed 221+ apps to bring you the best choices for 2026, from free options to premium solutions with advanced features.

Top Picks for Flow Rate Calculator Alternative

Pipe Flow Wizard - Calculator#1

Pipe Flow Wizard - Calculator by Daxesoft Ltd

Flow Rate & Pressure Loss Calc
Editor's Choice
🔧 Utilities
4.5(98 ratings)
FreeIn-App Purchases
Pipe Flow Wizard - Calculator screenshot 1
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This fluid flow rate and pressure loss calculator app helps engineers perform calculations for pipe systems, including flow rate, pressure drop, pipe diameter, and maximum pipe length, for both liquid and gas flow. Download the app to easily calculate and share results, and consider a subscription for full access to all features and no calculation restrictions.

Water Flow Calculators#2

Water Flow Calculators by Waterous

Strong Contender
📚 Education
4.6(5 ratings)
Free
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This application calculates water flow using various formulas, including Friction Loss, Smooth Nozzle, NFA, and Iowa Formulas, providing essential calculations for water flow analysis. Try it out to accurately determine water flow rates and make informed decisions.

Graphing Calculator Plus AI#3

Graphing Calculator Plus AI by Incpt.Mobis

Scientific Graphing Calculator
Worth Considering
📚 Education
4.6😊(12K ratings)
$5.99In-App Purchases
Graphing Calculator Plus AI screenshot 1
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An advanced scientific graphing calculator app that is user-friendly and suitable for basic to advanced mathematics, offering a powerful math core and extensive support features. Ideal for engineers, math students, and more, with built-in documents for various calculations. Explore the world of advanced mathematics with ease and efficiency.

What We Love

  • 💰 Affordable alternative to physical calculators
  • 🚀 Replicates TI-84 functionality well
  • 👍 Convenient to have on a mobile device
  • 🤖 Accurate calculations and results

Room to Improve

  • 🐛 Occasional graphing issues or inaccuracies
  • 🔍 Cluttered or unintuitive interface in some areas
  • 🔢 Difficulty exiting certain modes or functions

More Flow Rate Calculator Alternative apps to explore

4
Pipe Flow Liquid Flow Rate
Pipe Flow Liquid Flow Rate
Pipe Flow Liquid Flow Rate
Find Flow, Friction Loss Calc
Free

This application calculates fluid flow rates in pipes, taking into account pressure loss, friction losses, and fitting losses, and provides comprehensive results with detailed information. Engineers can use it to perform flow rate calculations, generate professional reports, and save results, with features including customizable units, user-definable materials and fluids, and verification against published data.

🔧 Utilities
(4)
5
Concrete Calculator Plus
Concrete Calculator Plus
Concrete Calculator Plus
by Inch Calculator
Free

Estimate concrete quantities with ease using 15 free calculators available in the app for various construction projects such as slabs, walls, and columns. Input dimensions in different units and receive results in both US customary and metric measurements. Access these trusted calculators by visiting www.inchcalculator.com.

🔧 Utilities
(21K)
6
Scientific Calculator Plus 991
Scientific Calculator Plus 991
Scientific Calculator Plus 991
Designed for math calculator
Free

A versatile scientific calculator app designed for math enthusiasts, offering features like natural display for textbook-like equations, symbolic and numeric modes, complex number calculations, calculus functions, statistical analysis, and unit conversion. With a premium upgrade option for additional advanced features and customization. Access the power of NCalc FX now!

📚 Education
(12K)
7
Flow Test Calculator
Flow Test Calculator
Flow Test Calculator
by Larry Owens
Free

This app helps users calculate flow rates of hydrants and determine the maximum flow of a water system using a standard variation of the Hazen-Williams formula. Try it out to easily assess your water system's flow capabilities.

📊 Productivity
(63)
8
Orifice Flow Rate Calculator
Orifice Flow Rate Calculator
Orifice Flow Rate Calculator
Natural Gas
Free

This application allows users to quickly and easily calculate orifice flow rates for natural gas, utilizing the AGA 3 standard, without requiring cell service. It offers various features, including calculation tools, data saving, and export options, to help users determine the MCF a single well is producing per day.

🔧 Utilities
(98)
9
Pipe Flow Gas Flow Rate
Pipe Flow Gas Flow Rate
Pipe Flow Gas Flow Rate
Find Flow, Friction Loss Calc
Free

This application calculates gas flow rates in pipes, considering friction and fitting losses, using compressible isothermal equations and various pressure loss equations. It offers an intuitive interface, comprehensive results, and customization options, allowing engineers to easily perform calculations and share results in the office or on-site.

🔧 Utilities
(7)
10
Flow Rate Help
Flow Rate Help
Flow Rate Help
Velocity + Diameter Calculator
$0.99

This application helps users calculate flow rate, pipe diameter, or velocity of a liquid with ease and accuracy. It allows customization of units and decimal places, making it a convenient tool for solving flow rate equations - try it out today!

🔧 Utilities
(41)
11
Elkhart Hard Facts Calculator
Elkhart Hard Facts Calculator
Elkhart Hard Facts Calculator
by Elkhart Brass
Free

This application provides a comprehensive set of calculators for accurate flow testing, including various nozzle reactions, pump discharge pressures, and fire flow formulas, all in one easy-to-use tool. Download the application to streamline your calculations and access helpful video tutorials on flow testing and more.

🔧 Utilities
(12)
12
OneCalc: All-in-one Calculator
OneCalc: All-in-one Calculator
OneCalc: All-in-one Calculator
Calculates everything. Try it.
Free

A versatile calculator app for iPhone and iPad offering over 40 calculators and unit converters for finance, health, and more. Simplify your calculations with just one app today!

📊 Productivity
(4.8K)
13
Pocket Infusion Calculator
Pocket Infusion Calculator
Pocket Infusion Calculator
IV Pump and Drip Rate
Free

This medical application helps health professionals calculate infusion rates for intravenous fluids and medications, making it a simple and accurate tool for use with gravity drip or IV pumps. Download the app to access various calculation features for free, without an internet connection, and start ensuring accurate patient care.

🏥 Medical
(6)
14
GraphNCalc83
GraphNCalc83
GraphNCalc83
Graphing calculator
$12.99

The app is a comprehensive graphing calculator that features algebraic entry, math functions, graph plotting, statistics, matrix operations, unit conversion, BASIC programming, chemistry tools, geometry calculations, finance functions, and a built-in user guide for easy reference. It offers a colorful, fast, and fluid experience on iPhone and iPad with advanced features like touch input, high-resolution graph outputs, and fast computation speeds. Explore its diverse functionality to enhance your mathematical tasks.

📚 Education
(3.8K)
15
HVACR Check & Charge
HVACR Check & Charge
HVACR Check & Charge
PT Charts Superheat Subcooling
Free

HVACR Check is a powerful tool for HVAC technicians that streamlines equipment checklists, service reports, and maintenance workflows. Simplify your work processes and stay organized with this all-in-one solution.

🔍 Reference
(16K)
16
McCalc Fusion Calculator
McCalc Fusion Calculator
McCalc Fusion Calculator
HDPE/PP Pressure Calculator
Free

This calculator helps you find the correct fusion pressure for HDPE and Polypropylene pipe fusion jobs by selecting your fusion machine and entering pipe size and pressure requirements. Try it now to take the guesswork out of pipe fusion and get the recommended theoretical gauge pressure for your project.

💼 Business
(18)
17
HVAC & Sheet Metal Calculator
HVAC & Sheet Metal Calculator
HVAC & Sheet Metal Calculator
Construction Math & Trade Pro
Free
$29.99 | 100% OFF

This ultimate calculator for HVAC professionals and sheet metal specialists simplifies complex calculations with precision tools for ducting offsets, angle measurements, and dimensional math. Try it out with a free trial and transform your workflow to increase accuracy, eliminate errors, and boost productivity with every calculation.

🔧 Utilities
(40)
18
Pipe Flow Liquid Pressure Drop
Pipe Flow Liquid Pressure Drop
Pipe Flow Liquid Pressure Drop
Find Loss, Friction Loss Calc
Free

This application calculates friction loss and fitting loss results for liquid pressure drop in pipes, using the Darcy-Weisbach equation and providing comprehensive results, including Reynolds number and fluid velocities. Try it out today and perform accurate pressure drop calculations on site or in the office, with the ability to generate professional reports and save results for future reference.

🔧 Utilities
(12)
19
Sporty's E6B Flight Computer
Sporty's E6B Flight Computer
Sporty's E6B Flight Computer
Calculator for pilots
$9.99

A versatile aviation calculator designed for pilots with 27 functions for navigation, conversion, and fuel calculations. Features an advanced timer and clock for tracking multiple time zones. Experience efficient problem-solving and arithmetic calculations for smooth flight operations.

🗺️ Navigation
(5K)
20
Calculate by QxMD
Calculate by QxMD
Calculate by QxMD
Medical Calculator
Free

A next-generation clinical calculator and decision support tool designed for the medical community, featuring tools across various medical specialties to aid in diagnosis, treatment, and prognosis. Developed by clinician experts, it provides quick answers through unique 'Question Flow' technology and integrates recent research publications for practical use. Try it now to streamline your clinical decision-making process.

🏥 Medical
(5.1K)