Best Ohms Law Apps

193+ iOS apps curated and reviewed

4.4 avg rating
16 free apps
Updated June 2026

Ohm's Law is the household name in ohms law, but it's far from the only option. We track 193+ alternatives and competitors on iOS — many free, many higher-rated than you'd expect.

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
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
7
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
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
The Ohms Law Calc
The Ohms Law Calc
The Ohms Law Calc
Simple Ohms Law Calculator
Free
🔍 Reference
(0)
10
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
11
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
12
Simple Circuit Builder
Simple Circuit Builder
Simple Circuit Builder
Electrical Learning Tool
Free

This virtual lab offers a hands-on experience for learning about resistors and circuit resistance. Easily build and test series and parallel circuits, measure voltage and current, and understand the impact of component changes in real-time.

Build circuits with up to eight componentsFive component typesVirtual volt and amp meters
🔧 Utilities
(28)
free
13
Electrical Calculations
Electrical Calculations
Electrical Calculations
by Egal Net di Ettore Gallina
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
Ohm's Law App
Ohm's Law App
Ohm's Law App
Solve electrical circuits.
Free
🔧 Utilities
(0)
15
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
(50)
free with in-app purchases
16
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
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
Ohms Law Calculator - voltage
Ohms Law Calculator - voltage
Ohms Law Calculator - voltage
Ohm's Law Calculator
$1.99
🔧 Utilities
(0)
19
Ohm's Law+
Ohm's Law+
Ohm's Law+
by Kanz Studios
$0.99

This utility app simplifies electrical calculations with a clean interface. Input any two values (voltage, current, resistance, or power) to instantly solve for the remaining ones. It also includes a resistor color code calculator and a home screen widget for quick access.

Electrical calculationsResistor color code calculatorHome screen widget
🔧 Utilities
(2)
paid
20
ibOhm's Law - Calculator
ibOhm's Law - Calculator
ibOhm's Law - Calculator
Electric Power Finder
Free
🔧 Utilities
(0)

Related searches