Best apps like Dr. DE

10+ similar apps compared and reviewed

4.1 avg rating
5 free apps
Updated August 2026
Dr. DE
Dr. DE
Pegasus Vertex, Inc.

Dr. DE is great, but it's not the only option. Explore 10+ similar apps for iPhone and iPad, each reviewed and rated by real users. Find free alternatives, premium upgrades, and hidden gems.

Top Alternatives to Dr. DE

Keystone Pump TDH Calculator#1

Keystone Pump TDH Calculator by Keystone Pumps LTD

Editor's Choice
🔧 Utilities
5.0(1 ratings)
Free
Keystone Pump TDH Calculator screenshot 1

This utility app assists engineers and technical personnel in calculating system parameters for slurry pipe and pump sizing. It computes required head pressure and limiting settling velocity based on user-inputted system data. The tool aims to simplify the selection process for slurry pumps.

TracPipe CounterStrike Guide#2

TracPipe CounterStrike Guide by Omega Flex, Inc.

Strong Contender
🔧 Utilities
3.4(7 ratings)
FreeAds
TracPipe CounterStrike Guide screenshot 1
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TracPipe CounterStrike Guide screenshot 3
TracPipe CounterStrike Guide screenshot 4
TracPipe CounterStrike Guide screenshot 5

This application helps users calculate the correct size of flexible gas piping for installations. It supports various sizing methods and gas types, providing accurate results based on selected parameters. Users can also access updated design guides and installation instructions.

McWane Pocket Engineer v2#3

McWane Pocket Engineer v2 by McWane

Worth Considering
🔧 Utilities
3.9(10 ratings)
Free
McWane Pocket Engineer v2 screenshot 1
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This comprehensive virtual assistant aids professionals in the waterworks and sewer industries with ductile iron pipe design and comparisons. It offers specialized calculators for pipeline design, performance, and thrust restraint, along with product literature and manufacturing videos.

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4
HVAC Pipe Sizer Plus
HVAC Pipe Sizer Plus
HVAC Pipe Sizer Plus
All types of pipe sizing
$13.99

This utility app combines three specialized pipe sizing tools for HVAC systems: liquid, steam, and gas. It offers flexible input options, unit conversions, and an equipment locator for comprehensive HVAC design.

Liquid pipe sizingSteam pipe sizing with steam table calculatorGas pipe sizing (low and high pressure)
🔧 Utilities
(1)
paid
5
FracAppz App
FracAppz App
FracAppz App
by FracAppz Studios, LLC
Free

This app provides oilfield professionals with essential tools for daily calculations, including tubular dimensions, proppant information, and various field calculators. It also features a customizable strap chart for fluid storage units.

Tubular dimensions and strengths libraryProppant supplier libraryHydrostatic pressure calculator
🔧 Utilities
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free
6
HVAC Duct Sizer
HVAC Duct Sizer
HVAC Duct Sizer
HVAC duct sizing and more...
$5.99

This app provides quick and simple HVAC duct sizing analysis. It allows users to calculate duct dimensions based on airflow or existing dimensions, and can also determine a range of duct sizes. Results can be emailed for further analysis.

Duct sizing by airflowDuct sizing by dimensionsRange of duct sizes calculation
🔧 Utilities
(8)
free with in-app purchases
7
Driller's Method
Driller's Method
Driller's Method
for Well Control (Oil & Gas)
$9.99

This application assists with oil well control calculations using the Driller's Method, particularly for kick occurrences on floating and landing rigs. It's a tool for oilfield professionals and students to understand and apply these essential calculations.

Driller's Method calculationsKick occurrence managementFloating platform support
🔧 Utilities
(0)
paid
8
Energy Efficiency Suite
Energy Efficiency Suite
Energy Efficiency Suite
by Muralidhar Shenoy
$19.99
🔧 Utilities
(0)
9
Pipe Calc Elite
Pipe Calc Elite
Pipe Calc Elite
Calculator for Pipe Trade Pros
$19.99

An advanced calculator for pipe trade professionals, offering quick access to pipe data, dimensions, and complex calculation solutions. It handles fractions and unit conversions, making it an essential tool for plumbers and fabricators on the job site.

Pipe data and dimensionsPressure loss calculationsOffset and cutback calculations
🔧 Utilities
(152)
paid
10
Cornell Pump Toolkit
Cornell Pump Toolkit
Cornell Pump Toolkit
by Cornell Pump
Free

This utility app helps calculate key centrifugal pump performance metrics like head, suction, and friction loss. It also suggests suitable pumps from a catalog and allows saving and sharing results. It's designed for field use on Apple devices, functioning offline.

Calculate Total Dynamic HeadCalculate Net Positive Suction HeadCalculate Friction Loss
🔧 Utilities
(3)
free