Best Engineering Tool Apps

213+ iOS apps curated and reviewed

4.6 avg rating
16 free apps
Updated July 2026

Finding the right engineering tool apps can be overwhelming with so many options. We've analyzed 213+ apps to bring you the best choices for 2026, from free options to premium solutions with advanced features.

Compare top Engineering Tool Apps (July 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1EE ToolKitEE ToolKitFree4.7โ˜… (1.4K)NoYesJul 2026
2ElectriCalc: Engineering ToolElectriCalc: Engineering ToolFreeโ€”NoNoMay 2026
3Ajax PRO: Tool For EngineersAjax PRO: Tool For EngineersFree4.5โ˜… (11)NoNoJul 2026
4Engineering Units ConverterEngineering Units ConverterFreeโ€”NoYesJul 2026
5Handy Art Reference ToolHandy Art Reference Tool$1.994.8โ˜… (1.2K)NoYesJul 2026
6Machinist ToolMachinist ToolFree4.8โ˜… (5)NoNoMay 2026
7BlueDriver OBD2 Scan ToolBlueDriver OBD2 Scan ToolFree4.6โ˜… (14K)NoNoJul 2026
8Pressure Vessel Heads.Pressure Vessel Heads.Freeโ€”NoYesMay 2026

Top Picks for Engineering Tool

EE ToolKit#1

EE ToolKit by Thomas Gruber

Electronics Engineering
Editor's Choice
๐Ÿ“š Education
4.7๐Ÿ˜Š(1.4K ratings)
FreeIn-App Purchases
EE ToolKit screenshot 1
EE ToolKit screenshot 2
EE ToolKit screenshot 3
EE ToolKit screenshot 4
EE ToolKit screenshot 5
EE ToolKit screenshot 6

This comprehensive toolkit offers over 160 electronic applications, calculators, and reference tools for engineers, students, and hobbyists. It features a multi-functional keyboard, color code tools, audio scope, frequency generator, and component references with datasheet access. The app supports real-time circuit simulations and includes a file manager for saving calculations.

What We Love

  • ๐Ÿ‘ Useful tools and features
  • ๐Ÿš€ Comprehensive and informative
  • ๐Ÿ‘ Intuitive and easy to use
  • ๐Ÿ‘ Helpful for both beginners and professionals

Room to Improve

  • ๐Ÿ”’ Many features locked behind paywall
  • ๐Ÿ› Some bugs and glitches reported
  • ๐Ÿ” Limited free version functionality
Ajax PRO: Tool For Engineers#3

Ajax PRO: Tool For Engineers by Ajax Systems Inc

Worth Considering
๐ŸŒŸ Lifestyle
4.5(11 ratings)
Free
Ajax PRO: Tool For Engineers screenshot 1
Ajax PRO: Tool For Engineers screenshot 2
Ajax PRO: Tool For Engineers screenshot 3
Ajax PRO: Tool For Engineers screenshot 4
Ajax PRO: Tool For Engineers screenshot 5
Ajax PRO: Tool For Engineers screenshot 6

This app empowers security system installers and company employees to manage and configure Ajax security systems. It facilitates quick connections, adjustments, and testing of devices, offering extensive control over an unlimited number of security systems, user access, and automation scenarios.

More Engineering Tool apps to explore

4
Engineering Units Converter
Engineering Units Converter
Engineering Units Converter
Quickly transform your units
Free
๐Ÿ“Š Productivity
(0)
5
Handy Art Reference Tool
Handy Art Reference Tool
Handy Art Reference Tool
3D Lit Reference for Artists!
$1.99

This app provides artists with rotatable 3D models of hands, heads, and feet for drawing reference. Customize poses and lighting to achieve realistic results for your artwork. Additional packs for animal skulls and foot rigs are available for purchase.

Rotatable 3D limb modelsCustomizable posesAdjustable 3-point lighting
๐Ÿ“š Education
(1.2K)
free with in-app purchases
6
Machinist Tool
Machinist Tool
Machinist Tool
by Allied Machine & Engineering Corp.
Free

This app offers machinists and engineers tools and resources for holemaking and finishing applications. It helps convert cutting tool parameters and select the right boring inserts. Users can also access product literature and connect with an engineering helpline.

Cutting tool parameter conversionBoring insert selection guideAccess to product literature
๐Ÿ“Š Productivity
(5)
free
7
BlueDriver OBD2 Scan Tool
BlueDriver OBD2 Scan Tool
BlueDriver OBD2 Scan Tool
Fear No Fixโ„ข
Free

This app turns your smartphone into a powerful OBD2 scan tool. It allows you to read and clear trouble codes, view live data, and generate detailed repair reports for your vehicle. Understand your car's issues and make informed repair decisions.

Read and clear trouble codes (Check Engine, ABS, etc.)Generate professional-grade Repair ReportsAccess Mode 6 and smog readiness data
๐Ÿ“Š Productivity
(14K)
free with in-app purchases
8
Pressure Vessel Heads.
Pressure Vessel Heads.
Pressure Vessel Heads.
Head Design Calculator
Free
๐Ÿ”ง Utilities
(0)
9
HyTools
HyTools
HyTools
by IMI Hydronic Engineering International SA
Free

This app provides HVAC professionals with a comprehensive suite of hydronic calculation tools. It assists with tasks like valve sizing, pressure drop calculations, and radiator power estimation. The tool offers unit conversion and language selection for user convenience.

Hydronic calculatorValve sizing and presettingRadiator power estimation
๐Ÿ“Š Productivity
(5)
free
10
EE ToolKit PRO
EE ToolKit PRO
EE ToolKit PRO
Electronics Engineering
$12.99

This comprehensive toolkit offers over 160 electronic applications, calculators, and reference sections for electronics engineers, students, and hobbyists. It includes features like a multi-functional keyboard, color code tools, audio scope, and circuit simulations, with ongoing improvements and updates.

Over 160 electronic applicationsMulti-functional keyboardColor code and SMD code tools
๐Ÿ“Š Productivity
(289)
paid
11
Nautlius: STEM Toolbox
Nautlius: STEM Toolbox
Nautlius: STEM Toolbox
Engineering Calculator & Units
Free

This app provides a comprehensive suite of tools for STEM education and professional use. It offers engineering calculators, unit conversions, property lookups, and simulation capabilities. Students and professionals can utilize it for quick calculations and data analysis.

Engineering calculatorsFree body diagramsProperty lookup tables
๐Ÿ“š Education
(2)
free
12
FIXD OBD2 Scanner
FIXD OBD2 Scanner
FIXD OBD2 Scanner
Clear Your Check Engine Light
Free

This app translates your car's diagnostic trouble codes into plain language, helping you understand potential issues and their severity. It provides maintenance reminders and offers advanced features like issue forecasting and emissions pre-checks with a premium subscription.

Translate check engine light codesUnderstand issue severityMaintenance reminders
๐Ÿ”ง Utilities
(26K)
free with in-app purchases
13
Cutting Tool Engineering
Cutting Tool Engineering
Cutting Tool Engineering
by CTE PUBLICATIONS, INC
Free

Access the leading magazine for the metalworking industry, covering all aspects of machining processes. Explore cutting and grinding operations, tools, fluids, and machine technologies. Published 12 times a year, it's a key resource for industry decision-makers.

Metalworking industry coverageMachining process insightsCutting and grinding operations
๐Ÿ“ก News
(1)
subscription
14
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
๐Ÿ“š Education
(121)
free
15
Tooling U-SME
Tooling U-SME
Tooling U-SME
Class Player
Free

Access manufacturing classes on your mobile device. This app provides easy access to your scheduled courses, including audio, video, and interactive content, for a convenient learning experience on the go.

Access manufacturing classesView schedulesPlay audio and video content
๐Ÿ“š Education
(189)
free
16
Civil Engineering Pack
Civil Engineering Pack
Civil Engineering Pack
Build, Design & Analysis Tool
$19.99

This comprehensive tool offers over 500 calculations for civil engineering disciplines. It covers structural design, concrete, beams, hydraulics, foundations, surveying, soil mechanics, road construction, timber, and bridges. Supports both SI and Imperial units.

Over 500 civil engineering calculations12 comprehensive modulesStructural, concrete, and beam engineering
๐Ÿ”ง Utilities
(11)
paid
17
OBD Fusion
OBD Fusion
OBD Fusion
OBD2 scan tool & diagnostics
$9.99

This app connects to your car's OBD2 port via a compatible adapter to read vehicle data. Monitor fuel economy, clear check engine lights, and create custom dashboards for real-time diagnostics and performance tracking.

Read and clear OBD2 trouble codesCustomizable real-time dashboardsEstimate fuel economy
โœˆ๏ธ Travel
(123)
free with in-app purchases
18
ADCA Tools
ADCA Tools
ADCA Tools
Enhance your productivity
Free
๐Ÿ”ง Utilities
(0)
19
Tape Measureโ„ข
Tape Measureโ„ข
Tape Measureโ„ข
Measure anything
Free

Transform your device into a versatile digital toolkit for precise measurements. Create 2D and 3D floor plans, scan rooms, and measure distances with advanced AI and computer vision. Ideal for DIY projects, home renovations, and professional use.

Tape MeasureRulerHeight Tool
๐Ÿ”ง Utilities
(87K)
free with in-app purchases
20
CompositesAI: AI for Engineers
CompositesAI: AI for Engineers
CompositesAI: AI for Engineers
Engineering Calculator&Tools
Free

This AI-powered platform assists composites engineers by providing instant, expert-level answers to questions about material design, calculations, and process optimization. It offers a chat assistant for natural language queries and specialized tools for calculating various material properties and generating meshes.

AI Chat Assistant for engineering queriesCalculate beam stiffness matrixCalculate plate A, B, D matrices
๐Ÿ“š Education
(15)
ad-supported

FAQ about Engineering Tool

What are the best engineering tool apps for iPhone?
EE ToolKit tops our engineering tool apps ranking as of July 2026, with a 4.7-star average from 1.4K App Store ratings, and it's free to download.
Yes โ€” 16 of the top engineering tool apps we rank are free to download, including EE ToolKit and ElectriCalc: Engineering Tool.
EE ToolKit has no ads and offers in-app purchases, according to its App Store listing as of July 2026.
We track 213+ engineering tool apps on the iOS App Store as of July 2026, ranked by rating, recency, and analysis of real user reviews.
The EE ToolKit app provides a comprehensive suite of over 160 electronic applications, calculators, and reference tools. It is designed to assist electronics engineers, students, and hobbyists with various tasks, including calculations, simulations, and accessing component information.
Key features include a vast collection of electronic applications, a multi-functional keyboard, extensive color code and SMD code tools, an audio scope, a frequency generator, a large component reference section with datasheet access, and real-time circuit simulations. It also offers a favorites page and a file manager for saving calculations.

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