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.
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.
- 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
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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
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.
- Ohm's Law calculator
- Resistor color code lookup
- PCB impedance calculation
- RF power and dB converters
- Electromechanical calculations
- Physics and foundation formulas
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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
Verdict
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
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.
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.
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.
| Parameter | Ohm's Law Calculator | Electrical Engineering Toolkit |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (2 ratings) | 5.0 (1 ratings) |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 2 — better | 1 |
| Update frequency | Every 17 months | Every 9 months — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 13.0 — better | 16.2 |
| Further details — not scored | ||
| Size | 1 MB | 12 MB |
| Age rating | 4+ | 4+ |
| Developer | Phan Nhat Đang | Vladislav Zhirnov |
Customer experience
Ohm's Law Calculator
Electrical Engineering Toolkit
In-app purchases
Ohm's Law Calculator
- Remove ads$1.99
Electrical Engineering Toolkit
- Full version / monthly$0.991 Month
- Full version / year$3.991 Year
- Support project, remove ADS$5.99
Questions
Is Ohm's Law Calculator free?
Is Electrical Engineering Toolkit free?
Which has better reviews, Ohm's Law Calculator or Electrical Engineering Toolkit?
Do Ohm's Law Calculator or Electrical Engineering Toolkit have ads?
Which is updated more often, Ohm's Law Calculator or Electrical Engineering Toolkit?
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