Best Ohms Law Apps

248+ iOS apps curated and reviewed

4.2 avg rating
12 free apps
Updated August 2026

Ohm's Law is the household name in ohms law, but it's far from the only option. We track 248+ alternatives and competitors on iOS — many free, many higher-rated than you'd expect.

Compare top Ohms Law Apps (August 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1Ohm's LawOhm's LawFree4.7★ (165)NoYesJul 2026
2Ohms Law Calc.Ohms Law Calc.Free4.7★ (1.3K)YesYesSep 2026
3Ohms LawOhms LawFree4.3★ (7)YesNoAug 2026
4Ohm's Law: Circuit CalculatorOhm's Law: Circuit CalculatorFree5.0★ (1)YesNoMay 2026
5PIER: Ohm's Law CalculatorPIER: Ohm's Law Calculator$1.993.3★ (4)NoNoAug 2026
6ibOhm's Law - CalculatoribOhm's Law - CalculatorFreeYesYesSep 2026
7My Ohms LawMy Ohms Law$3.99NoNoMay 2026
8Ohm's Law & Power Law CalculatorOhm's Law & Power Law CalculatorFree4.4★ (26)NoNoJul 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
  • 🔧 Requires only two values to calculate the rest
  • 📱 Lightweight and always accessible
  • 🙌 No in-app purchases or subscriptions required
  • ✅ Reliable and consistent performance for most users
  • 🎓 Helpful for learning and verification of calculations
  • 🔌 Practical for multiple professional fields (electrical, vaping, HVAC, etc.)

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
  • ⚠️ Outdated and hasn't been updated since iOS 6
  • ❌ Limited functionality - single resistor only
  • 🔋 Suspicious cell data usage reported by some users
  • 😞 Ads introduced in recent updates (controversial change)
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
  • 🚀 Useful for electrical work
  • 👍 Clean and pleasing interface
  • 🚀 Terrific app

Room to Improve

  • 👎 Have to pay again for an app already purchased
  • 👎 Not easy to use
  • 🐛 Paid but not unlocked, no response from developer
  • 👎 Annoying pop-ups
  • 🐛 Keeps shutting down
  • 👎 Worst Ohms calculator ever
  • 👎 Needs more work
  • 👎 Incorrect Ohm's law formulas
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

FAQ about Ohms Law

What are the best ohms law apps for iPhone?
Ohm's Law tops our ohms law apps ranking as of August 2026, with a 4.7-star average from 165 App Store ratings, and it's free to download.
Yes — 12 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 August 2026.
We track 248+ ohms law apps on the iOS App Store as of August 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.

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