Comparison

Electrical Engineering Toolkit vs Casul

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

Head to head
About

Electrical Engineering Toolkit

Features
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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/

About

Casul

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Casul es una plataforma para la búsqueda de información de producto, es exclusivamente un catálogo. Se puede escanear un código de barras y buscar el producto dentro de nuestra plataforma.

Screenshots

Electrical Engineering Toolkit4 screens
Casul4 screens

Verdict

The call

The clearest difference is in-app purchases: Casul at none against Electrical Engineering Toolkit's 3. Casul also leads on iOS requirement (13.4 vs 16.2). Electrical Engineering Toolkit's advantage is device support. On price 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. Electrical Engineering Toolkit sells 3 in-app purchases, starting at $0.99 per month. Casul asks for nothing beyond the download.

Scorecard3 real differences · 3 level
Electrical Engineering Toolkit versus Casul: the parameters behind the verdict, then further details
ParameterElectrical Engineering ToolkitCasul
PriceFreeFree
Update frequencyEvery 9 months—
AdsNo—
In-app purchasesYesNo — better
DevicesiPhone, iPad — better—
Requires iOS16.213.4 — better
Further details — not scored
Size12 MB25 MB
Age rating4+4+
DeveloperVladislav ZhirnovDwit Mexico

In-app purchases

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
None

Casul

No in-app purchases

Questions

Is Electrical Engineering Toolkit free?
Electrical Engineering Toolkit is free to download, with in-app purchases available.
Is Casul free?
Casul is free to download, with no in-app purchases.

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