Comparison

Ohm's Law Calculator vs Electrical Engineering Toolkit

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Ohm's Law Calculator

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.

Highlights
  • Calculate Voltage, Current, Resistance, Power
  • Automatic calculation of remaining values
  • Supports multiple units (kV, V, mV, A, mA, Ω, kΩ, MΩ, W, kW, MW, hp, BTU/hr)
  • User-friendly interface
  • Contact developer for requests
Features
Read full description

This App will help you to accurately calculate values: Voltage, Current, Resistance, Power. You only need to enter any 2 values mentioned above, this App will automatically calculate for you the remaining values. In addition, we also support many different units of calculation: - Voltage: kV, V, mV - Current: A, mA - Resistance: Ω, kΩ, MΩ - Power: W, kW, MW, hp, BTU / hr Results are estimates for informational purposes only. We are very happy to serve you. If you have any requests, don't hesitate to contact us. - https://www.facebook.com/phan.nhatdang.3/ - phannhatd@gmail.com

About

Electrical Engineering Toolkit

This comprehensive toolkit offers a wide range of calculators for electronics design, PCB layout, and RF work. Instantly check formulas, verify lab results, and estimate component values for various engineering tasks.

Highlights
  • Ohm's Law calculator
  • Resistor color code lookup
  • PCB impedance calculation
  • RF power and dB converters
  • Electromechanical calculations
  • Physics and foundation formulas
Features
Read full description

Design faster, check formulas instantly, and get confident answers—whether you’re wiring a prototype, laying out a PCB, or verifying lab results. This all-in-one toolkit brings together the most-used electronics calculators so you don’t have to jump between apps or spreadsheets. Core Circuits & Passives • Ohm’s Law (V, I, R, P) • Resistor color code (through-hole & SMD) • Series/parallel & voltage divider • Capacitance & capacitor impedance (RC) • Inductance/reactance/admittance; coil/loop inductance • Battery life estimation • RMS/peak/peak-to-peak voltage • Decibel (dB) converters for power/voltage levels Analog & RF Essentials • Op-amp gain/voltage and inverting resistor calculators • Impedance matching: π-match and T-match • RF power: ratio/units conversion, PAE, N-way power divider • dB/dBm helpers for quick link-budget math These are the same families of tools engineers rely on for day-to-day analog and RF work. PCB & Signal Integrity (EDA) • Microstrip/stripline impedance (single-ended & differential) • Trace width and max current • Crosstalk (edge/broadside), wire/microstrip inductance These capabilities mirror what dedicated PCB toolkits and online impedance calculators provide—now in one place on your phone. Electromechanical & Power • Lenz’s & Faraday’s laws (induced EMF) • Torque conversion and stepper motor helpers • Flyback SMPS building blocks • Heat sink basics & power density • Peak/peak-to-peak/RMS and power conversions These bridge the gap between bench calculations and real hardware choices. Physics & Foundations • Lorentz force, electrical energy, RC time constant, LC tank resonance—handy checks for labs and exams alike. Why this app? • Comprehensive: from Ohm’s Law and resistor codes to PCB impedance and RF power—covering the everyday set engineers actually use. • Built for speed: clean inputs, clear results, and units you expect. • For everyone: students learning the basics, makers iterating quickly, and professionals verifying designs. Perfect for: electronics labs, field service, ham/RF projects, PCB layout checks, audio/dB work, and rapid “sanity-check” calculations during reviews. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Ohm's Law Calculator2 screens
Electrical Engineering Toolkit4 screens

Verdict

The call

The clearest difference is iOS requirement: Ohm's Law Calculator at 13.0 against Electrical Engineering Toolkit's 16.2. On price, rating, ratings volume and update cadence there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Ohm's Law Calculator sells 1 one-off in-app purchase and Electrical Engineering Toolkit sells 3 in-app purchases, starting at $0.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 5.0 for Ohm's Law Calculator against 5.0 for Electrical Engineering Toolkit. Both are backed by a comparable volume of ratings — 2 and 1 respectively.

UpkeepUpdate frequency

Ohm's Law Calculator ships an update every 17 months, Electrical Engineering Toolkit every 9 months. The most recent releases landed on October 5, 2026 and October 25, 2026 respectively.

Scorecard1 real difference · 9 level
Ohm's Law Calculator versus Electrical Engineering Toolkit: the parameters behind the verdict, then further details
ParameterOhm's Law CalculatorElectrical Engineering Toolkit
PriceFreeFree
Rating5.0 (2 ratings)5.0 (1 ratings)
Positive reviews100.0% of reviews—
Number of ratings2 — better1
Update frequencyEvery 17 monthsEvery 9 months — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS13.0 — better16.2
Further details — not scored
Size1 MB12 MB
Age rating4+4+
DeveloperPhan Nhat ĐangVladislav Zhirnov

Customer experience

Ohm's Law Calculator

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Electrical Engineering Toolkit

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

1 purchases

Ohm's Law Calculator

One-time1
  • Remove ads$1.99
3 purchases

Electrical Engineering Toolkit

Subscriptions2
  • Full version / monthly$0.991 Month
  • Full version / year$3.991 Year
One-time1
  • Support project, remove ADS$5.99

Questions

Is Ohm's Law Calculator free?
Ohm's Law Calculator is free to download, with in-app purchases available.
Is Electrical Engineering Toolkit free?
Electrical Engineering Toolkit is free to download, with in-app purchases available.
Which has better reviews, Ohm's Law Calculator or Electrical Engineering Toolkit?
Ohm's Law Calculator and Electrical Engineering Toolkit are both rated 5.0 out of 5 on the App Store, from 2 and 1 ratings respectively.
Do Ohm's Law Calculator or Electrical Engineering Toolkit have ads?
Neither Ohm's Law Calculator nor Electrical Engineering Toolkit shows ads.
Which is updated more often, Ohm's Law Calculator or Electrical Engineering Toolkit?
Ohm's Law Calculator ships an update every 17 months, and Electrical Engineering Toolkit every 9 months. Most recently, Ohm's Law Calculator was updated on October 5, 2026 and Electrical Engineering Toolkit on October 25, 2026.

Other comparisons