Best • Fluid Mechanics, Reactive Transport And Heat Flow Apps

184+ iOS apps curated and reviewed

4.6 avg rating
18 free apps
Updated May 2026

Out of 184+ • Fluid Mechanics, Reactive Transport and Heat Flow apps on iOS, 18 are free and the rest sit in the paid tier. This page sorts them so you can compare both sides before you commit.

Top Picks for • Fluid Mechanics, Reactive Transport And Heat Flow

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
Pipe Flow Wizard - Calculator screenshot 2
Pipe Flow Wizard - Calculator screenshot 3
Pipe Flow Wizard - Calculator screenshot 4
Pipe Flow Wizard - Calculator screenshot 5
Pipe Flow Wizard - Calculator screenshot 6

Calculate fluid flow rate and pressure loss in pipes. This app helps engineers determine pipe diameter, maximum pipe length, and friction loss for both liquid and gas flows, including fittings and elevation changes. Results can be shared as Excel or PDF reports.

Pipe Flow Liquid Pressure Drop#2

Pipe Flow Liquid Pressure Drop by Daxesoft Ltd

Find Loss, Friction Loss Calc
Strong Contender
🔧 Utilities
5.0(12 ratings)
FreeIn-App Purchases
Pipe Flow Liquid Pressure Drop screenshot 1
Pipe Flow Liquid Pressure Drop screenshot 2
Pipe Flow Liquid Pressure Drop screenshot 3
Pipe Flow Liquid Pressure Drop screenshot 4
Pipe Flow Liquid Pressure Drop screenshot 5
Pipe Flow Liquid Pressure Drop screenshot 6

This app calculates friction and fitting losses in liquid flow systems using the Darcy-Weisbach equation. It offers extensive databases for fluids, pipes, and fittings, with customizable units and reporting options. Verified against published data, it's designed for engineers needing accurate pressure drop calculations.

Flow Conversions#3

Flow Conversions by Jeff Evans

Water flow conversions
Worth Considering
🔧 Utilities
5.0(1 ratings)
Free
Flow Conversions screenshot 1
Flow Conversions screenshot 2
Flow Conversions screenshot 3

Easily convert water flow rates between various units of measurement. This utility app provides a straightforward way to calculate and understand different flow rate values.

More • Fluid Mechanics, Reactive Transport And Heat Flow apps to explore

4
Fluid Mechanics Pack
Fluid Mechanics Pack
Fluid Mechanics Pack
Turbulence,Vortex,Cavitation
$3.99
$4.99 | 20% OFF

This engineering toolkit provides 97 calculators and 28 converters for fluid mechanics, civil, and structural engineering. It supports both imperial and metric units, offering essential calculations for students, engineers, and researchers.

97 engineering calculators28 unit convertersSupports Imperial and Metric units
🔍 Reference
(12)
paid
5
Pipe Flow Liquid Pipe Diameter
Pipe Flow Liquid Pipe Diameter
Pipe Flow Liquid Pipe Diameter
Find Size, Friction Loss Calc
Free

This app calculates the minimum internal pipe diameter required for a specific flow rate and maximum pressure loss. It offers comprehensive results, customizable databases for materials and fluids, and generates professional reports.

Pipe diameter calculationFriction loss calculationCustomizable material and fluid databases
🔧 Utilities
(5)
free with in-app purchases
6
Chegg Study - Homework Help
Chegg Study - Homework Help
Chegg Study - Homework Help
Expert Answers & College App
Free

This app provides homework help and personalized study support for millions of students across 80 subjects. Access millions of explained solutions, flashcards, and expert Q&A to master tough concepts and prepare for exams. Utilize AI-powered solutions for quicker assistance.

Step-by-step explained solutionsFlashcards for subjectsExpert Q&A responses
📚 Education
(205K)
free with in-app purchases
7
Math and Science Tutor
Math and Science Tutor
Math and Science Tutor
Learn Math Fast
Free

Access over 1500 video lessons and 500 hours of step-by-step instruction across math, science, and engineering subjects. Learn at your own pace with features like favoriting, search, and downloadable worksheets. Achieve academic success with expert-led tutorials.

1500+ video lessons500+ hours of instructionSearchable lesson library
📚 Education
(906)
subscription
8
Pipe Flow Gas Pressure Drop
Pipe Flow Gas Pressure Drop
Pipe Flow Gas Pressure Drop
Find Loss, Friction Loss Calc
Free

This app calculates gas pressure loss in pipes using various compressible flow equations. It automatically handles gas density changes and provides detailed results including Reynolds number and friction factors. Users can customize pipe materials, fittings, and gases from integrated or custom databases.

Friction and fitting loss calculationsMultiple compressible flow equationsAutomatic gas density handling
🔧 Utilities
(11)
free
9
Learn Mechanical Engineering
Learn Mechanical Engineering
Learn Mechanical Engineering
by Pollmine.Com
Free

Master mechanical engineering concepts with AI-driven lessons, bite-sized videos, and quizzes. Dedicate just 60 minutes weekly to enhance your knowledge and skills in various business and engineering topics.

AI-driven coachBite-sized video lessonsInteractive quizzes
📚 Education
(121)
free
10
Astra AI: Study & Exam Prep
Astra AI: Study & Exam Prep
Astra AI: Study & Exam Prep
Mathe & Hausaufgaben lösen
Free

This AI-powered tutoring app provides personalized, step-by-step assistance for a wide range of subjects including math, physics, and chemistry. It offers instant solutions to homework problems, targeted exam preparation, and in-depth subject exploration to help students learn more efficiently and build confidence.

Snap and solve homework problemsStep-by-step problem solvingPersonalized exam preparation
📚 Education
(3K)
free with in-app purchases
11
Periodic Table: Chemistry 2026
Periodic Table: Chemistry 2026
Periodic Table: Chemistry 2026
Chemistry in your phone!
Free

Explore the universe's language with this interactive chemistry app. It offers a clear, visual, and fact-based approach to understanding elements, isotopes, and chemical reactions. Ideal for students, educators, and curious minds.

Interactive Periodic TableDetailed Element Cards3300+ Isotopes
📚 Education
(5.2K)
free with in-app purchases
12
Precision Fluid Power
Precision Fluid Power
Precision Fluid Power
Quotes and Information
Free

This app simplifies hydraulic calculations for displacement, pump input horsepower, and torque. It also allows users to request quotes for new or repaired hydraulic units by filling out a form and attaching images.

Hydraulic calculationsPump input horsepowerTorque calculations
💼 Business
(7)
free
13
Molecules
Molecules
Molecules
by Sunset Lake Software
Free

Explore and interact with 3D molecular models on your device. Rotate, zoom, and pan structures using intuitive touch gestures. Visualize molecules in different modes and load custom structures from various sources.

3D molecule renderingFinger-based manipulation (rotate, zoom, pan)Ball-and-stick visualization
📚 Education
(166)
free
14
Simple Unit Converter - Pro Measurement and Conversion Calculator for Multi Units
Simple Unit Converter - Pro Measurement and Conversion Calculator for Multi Units
Simple Unit Converter - Pro Measurement and Conversion Calculator for Multi Units
by Jian Yih Lee
Free

Easily convert between a wide range of units for length, area, mass, temperature, volume, and more. This app offers a comprehensive set of conversion tools for everyday and professional use.

Length conversionsArea conversionsMass conversions
📊 Productivity
(210)
free
15
Fluid Mechanics Calc
Fluid Mechanics Calc
Fluid Mechanics Calc
by Trelleborg Sealing Solutions
Free

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.

130+ fluid mechanics formulas360+ calculation methodsUnit system conversion (metric/US)
🔧 Utilities
(3)
free
16
Chemify: AI Chemistry helper
Chemify: AI Chemistry helper
Chemify: AI Chemistry helper
Solves inorganic and organic
Free

This app simplifies chemistry by generating formulas, naming compounds, and balancing reactions. It offers an AI tutor, interactive tools, and practice quizzes to aid learning for students.

Formula and IUPAC name generationCompound property explorationReaction balancing
📚 Education
(4)
free with in-app purchases
17
Physics Formulas Lite
Physics Formulas Lite
Physics Formulas Lite
by NSC CO. PTY LTD
Free

Quickly access and reference physics formulas for study and work. Features include calculation tools, multi-language support, a favorites folder, and formula sharing. Search and add custom formulas and tools.

Formula reference by categoryIn-app calculation toolsMulti-language support
📚 Education
(57)
free
18
Orifice Flow
Orifice Flow
Orifice Flow
by Muralidhar Shenoy
$3.99

Calculate fluid flow rates in pipes and conduits using orifice plates. Supports common industrial fluids and custom fluid properties, with adjustable units and orifice types. Ideal for engineers and designers.

Fluid flow rate computationSupports 15 common industrial fluidsCustom fluid property input and saving
🔧 Utilities
(1)
paid
19
Chemistry News by C&EN
Chemistry News by C&EN
Chemistry News by C&EN
by American Chemical Society
Free

Access daily chemistry news and weekly magazine issues optimized for mobile. Stay updated on research, business trends, and career guidance in chemistry. Read downloaded articles offline and bookmark stories for later.

Daily chemistry newsWeekly magazine issuesOffline article reading
📡 News
(393)
free
20
Pipe Flow Gas Pipe Diameter
Pipe Flow Gas Pipe Diameter
Pipe Flow Gas Pipe Diameter
Find Size, Friction Loss Calc
Free

This utility app calculates the minimum internal pipe diameter for gas flow based on flow rate and pressure loss. It supports various calculation equations and offers comprehensive results with customizable units and databases for materials, fluids, and fittings.

Calculates minimum internal pipe diameterSupports multiple flow equations (AGA, Weymouth, etc.)Handles gas density changes with Ideal Gas Law
🔧 Utilities
(2)
free