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Best Ohms Law Apps

198+ iOS apps curated and reviewed

4.4 avg rating
17 free apps
Updated July 2026

Ohm's Law is the household name in ohms law, but it's far from the only option. We track 198+ alternatives and competitors on iOS — many free, many higher-rated than you'd expect.

Compare top Ohms Law Apps (July 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1Ohm's LawOhm's LawFree4.7★ (165)NoYesJul 2026
2Ohms Law Calc.Ohms Law Calc.Free4.7★ (1.3K)YesYesJul 2026
3Ohms LawOhms LawFree4.3★ (7)YesNoMay 2026
4Ohm's Law: Circuit CalculatorOhm's Law: Circuit CalculatorFree5.0★ (1)YesNoMay 2026
5EE ToolKitEE ToolKitFree4.7★ (1.4K)NoYesJul 2026
6Ohm's Law & Power Law CalculatorOhm's Law & Power Law CalculatorFree4.4★ (26)NoNoJul 2026
7The Ohms Law CalcThe Ohms Law CalcFree—NoYesMay 2026
8OHMs Law CalcOHMs Law Calc$1.99—NoNoJun 2026

Top Picks for Ohms Law

Ohm's Law#1

Ohm's Law by Creature Code Mobile, LLC

Editor's Choice
🔧 Utilities
4.7😊(165 ratings)
FreeIn-App Purchases
Ohm's Law screenshot 1

This utility app calculates electrical resistance, voltage, and current using Ohm's Law. It provides a quick and easy way to solve electrical formulas for various applications.

What We Love

  • 👍 Extremely user-friendly and intuitive interface
  • ⚡ Fast and accurate calculations
  • 🎯 Simple, focused design with no unnecessary clutter
  • 💰 Free app with minimal ads that don't interfere

Room to Improve

  • 🐛 Crashes when entering decimal values in multiple fields
  • 🐛 Reset function doesn't work properly after first use
  • ⚠️ App incompatible with newer iOS versions
Ohms Law Calc.#2

Ohms Law Calc. by V PUGAZHENTHI

Wire Size & Voltage Drop
Strong Contender
🔧 Utilities
4.7😊(1.3K ratings)
FreeAdsIn-App Purchases
Ohms Law Calc. screenshot 1
Ohms Law Calc. screenshot 2
Ohms Law Calc. screenshot 3
Ohms Law Calc. screenshot 4
Ohms Law Calc. screenshot 5
Ohms Law Calc. screenshot 6

This app provides a comprehensive suite of electrical calculations, including Ohm's Law, voltage drop, wire sizing, and impedance. It also offers numerous converters for various electrical units and parameters, aiding in circuit design and analysis.

What We Love

  • 🚀 Great value
  • 🚀 Works perfectly
  • 🚀 Fantastic app
  • 👍 Best thing since sliced bread

Room to Improve

  • 👎 Have to pay again for an app already purchased
  • 👎 Not easy to use
  • 🐛 Paid but not unlocked, no response from developer
Ohms Law#3

Ohms Law by Pro Certs Software Ltd

Ohms Law Calculator
Worth Considering
🔧 Utilities
4.3(7 ratings)
FreeAds
Ohms Law screenshot 1
Ohms Law screenshot 2
Ohms Law screenshot 3
Ohms Law screenshot 4

This utility app calculates voltage, current, resistance, and power using Ohm's Law. Simply input any two values, and the app will compute the remaining two, providing a comprehensive tool for electrical calculations.

More Ohms Law apps to explore

4
Ohm's Law: Circuit Calculator
Ohm's Law: Circuit Calculator
Ohm's Law: Circuit Calculator
Electrical Calculator & Solver
Free

This app simplifies electrical calculations by accurately computing voltage, current, resistance, and power. It offers a user-friendly interface and step-by-step explanations, making it ideal for students, engineers, and electricians to solve circuit problems efficiently.

Voltage calculationCurrent calculationResistance calculation
🔧 Utilities
(1)
ad-supported
5
EE ToolKit
EE ToolKit
EE ToolKit
Electronics Engineering
Free

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.

Over 160 electronic applicationsMulti-functional keyboardColor code and SMD code tools
📚 Education
(1.4K)
free with in-app purchases
6
Ohm's Law & Power Law Calculator
Ohm's Law & Power Law Calculator
Ohm's Law & Power Law Calculator
by Cressall Resistors Ltd
Free

This app calculates electrical parameters based on Ohm's and power laws. Input any two values (voltage, current, resistance, or power) and the app will automatically compute the remaining two. It allows for continuous "what-if" scenarios by locking one parameter and recalculating others.

Ohm's Law calculationsPower Law calculationsLock and unlock parameters
🔧 Utilities
(26)
free
7
The Ohms Law Calc
The Ohms Law Calc
The Ohms Law Calc
Simple Ohms Law Calculator
Free
🔍 Reference
(0)
8
OHMs Law Calc
OHMs Law Calc
OHMs Law Calc
by Jonathan Mellen
$1.99

This tool calculates Ohm's Law for single and three-phase applications using vector calculations for balanced and unbalanced loads. It quickly determines Watts, Volts, Amps, or Ohms, and can back-calculate load resistance. Widget support is included.

Single and three-phase calculationsVector calculations for unbalanced loadsCalculate Watts, Volts, Amps, or Ohms
🔍 Reference
(0)
paid
9
Electrical Code-A-Day
Electrical Code-A-Day
Electrical Code-A-Day
Quiz for Electricians
Free

Test your electrical knowledge daily with a new question based on the US electrical code. Perfect for apprentices, journeymen, and masters seeking to learn or refresh their understanding of electrical concepts and regulations.

Daily electrical code questionsQuestions written by a real electricianCovers a wide range of electrical topics
📊 Productivity
(8.6K)
free
10
Ohm's Law App
Ohm's Law App
Ohm's Law App
Solve electrical circuits.
Free
🔧 Utilities
(0)
11
My Ohms Law
My Ohms Law
My Ohms Law
by Anders Falck
$3.99
📚 Education
(0)
12
ibOhm's Law - Calculator
ibOhm's Law - Calculator
ibOhm's Law - Calculator
Electric Power Finder
Free
🔧 Utilities
(0)
13
Electrical Calculations
Electrical Calculations
Electrical Calculations
Cable sizing & capacity
Free

This app provides a comprehensive suite of electrical calculations for professionals. It supports various international standards and offers detailed reports in PDF format. The tool covers wiring, power, motor, and electronic calculations, along with extensive conversion tables and resources.

Wire size and voltage drop calculationsPower, current, and resistance calculationsMotor performance and connection diagrams
📊 Productivity
(125)
free with in-app purchases
14
VoltLab: Interactive Physics
VoltLab: Interactive Physics
VoltLab: Interactive Physics
Lessons, Tests & Circuits
Free

This app simplifies learning electricity through interactive lessons and visual experiments. It offers offline access, quizzes with detailed solutions, and a reference guide for formulas. Ideal for students and educators seeking to understand electrical concepts.

Interactive circuit buildingVisual experiment resultsSelf-paced learning
📚 Education
(188)
free with in-app purchases
15
Ohm's Law Calculator
Ohm's Law Calculator
Ohm's Law Calculator
Power, Volts, Amps, Ohm : Calc
Free

Easily calculate electrical values like voltage, current, resistance, and power. Input any two known values, and the app will automatically compute the rest. Supports various units for precise calculations.

Calculate Voltage, Current, Resistance, PowerAutomatic calculation of remaining valuesSupports multiple units (kV, V, mV, A, mA, Ω, kΩ, MΩ, W, kW, MW, hp, BTU/hr)
🔧 Utilities
(2)
free with in-app purchases
16
AI Lawyer - Law Help
AI Lawyer - Law Help
AI Lawyer - Law Help
Best AI Assistant for Legal
Free

This app provides clear, easy-to-understand definitions of legal concepts and terms. It features an audio option for pronunciation and detailed explanations to help users grasp complex legal jargon. Ask the AI any law-related question for quick assistance.

Clear legal definitionsAudio pronunciation for termsDetailed explanations of jargon
🔍 Reference
(145)
free with in-app purchases
17
Ugly's Electrical References
Ugly's Electrical References
Ugly's Electrical References
by Informed Publishing
$12.99

This app provides electricians and electrical professionals with up-to-date digital information based on the National Electrical Code. It includes formulas, wiring diagrams, conduit bending guides, and calculators for various electrical calculations. The app is designed for on-the-job reference and works offline.

NEC 2026 updatesMathematical formulas and calculatorsConduit bending guide with videos
📊 Productivity
(1.5K)
paid
18
Easy Ohm's Law
Easy Ohm's Law
Easy Ohm's Law
by Siu Yuen Ho
Free

This app helps you calculate voltage, current, resistance, and power. Simply input any two values, and the rest will be automatically computed with adjusted units. It supports a wide range of languages for global accessibility.

Calculate voltage, current, resistance, and powerAutomatic unit adjustmentInput any two values for instant calculation
📚 Education
(2)
free with in-app purchases
19
Ohio Revised Code, OH Laws ORC
Ohio Revised Code, OH Laws ORC
Ohio Revised Code, OH Laws ORC
State Law, Titles & Statutes
Free

Access the complete Ohio Revised Code with offline capabilities. Add custom notes, highlights, and bookmarks. Easily search and share articles via email, keeping you updated with the latest state laws.

Complete offline accessCustom notes and highlightingCustomized bookmarks
🔍 Reference
(150)
subscription
20
Ohm & Watt Law Electrical Calc
Ohm & Watt Law Electrical Calc
Ohm & Watt Law Electrical Calc
Volt,Current,Power,Resistance
Free

This utility app quickly calculates voltage, current, resistance, and power using Ohm's and Watt's laws. It's designed for electricians, engineers, and students, offering instant, accurate results with a simple interface. Works offline and is ideal for field calculations or exam preparation.

Calculate Voltage, Current, Resistance, PowerSupports Ohm's Law & Watt's LawBeginner-friendly interface
🔧 Utilities
(52)
free with in-app purchases

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FAQ about Ohms Law

What are the best ohms law apps for iPhone?
Ohm's Law tops our ohms law apps ranking as of July 2026, with a 4.7-star average from 165 App Store ratings, and it's free to download.
Yes — 17 of the top ohms law apps we rank are free to download, including Ohm's Law and Ohms Law Calc..
Ohm's Law has no ads and offers in-app purchases, according to its App Store listing as of July 2026.
We track 198+ ohms law apps on the iOS App Store as of July 2026, ranked by rating, recency, and analysis of real user reviews.
This app is a utility tool designed to calculate electrical values based on Ohm's Law. It allows users to easily determine voltage, current, or resistance when two of these values are known.
The primary features include the ability to calculate voltage, current, and resistance using Ohm's Law formulas. It serves as a quick reference and calculation tool for electrical parameters.

Related searches

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