Comparison

Electronic Circuit Calculator vs SJ Resistor Calculator

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

Head to head
About

Electronic Circuit Calculator

This app provides a comprehensive suite of calculators and design tools for electronic engineering. It assists with circuit design, filter analysis, and component calculations for resistors, capacitors, and inductors. Ideal for both professionals and students, it simplifies complex electronic projects.

Highlights
  • Comprehensive calculator collection
  • Filter design with graph plotting
  • Resistor, transistor, capacitor design tools
  • Amplifier and inductor design
  • Circuit analysis and design
  • Offline functionality
Features
Read full description

Electronic Circuit Calculator is a powerful electronics toolkit combining circuit calculators, circuit analysis, design tools, and interactive simulations in one app. Built for electronics and electrical engineering students, hobbyists, technicians, and engineers, it helps you calculate, analyze, design, and explore electronic circuits. CIRCUIT ANALYSIS & THEORY • Thevenin Theorem • Norton Theorem • Kirchhoff’s Current Law (KCL) • Kirchhoff’s Voltage Law (KVL) • Nodal Analysis • Mesh Analysis • Ohm’s Law • Voltage Divider • Series and Parallel Circuits • RLC Resonance INTERACTIVE CIRCUIT SIMULATIONS Explore electronics with interactive simulations that help you understand circuit behavior. • Buck Converter Simulation • Boost Converter Simulation • Sawtooth Generator Circuit • AND, OR, NAND and NOR Gate Simulations • Shift Register Simulations • Multiplexer (MUX) • Demultiplexer (DEMUX) • Counter IC • PISO and SIPO Simulations POWER ELECTRONICS • Buck Converter Calculator • Boost Converter Calculator • Buck and Boost Simulations DIGITAL ELECTRONICS • Karnaugh Map • Decimal to Binary Converter • Logic Gate Simulations • Multiplexer and Demultiplexer • Counter IC • Shift Registers • PISO and SIPO OP AMP & ANALOG ELECTRONICS • Inverting Amplifier • Non-Inverting Amplifier • Differential Amplifier • Summing Amplifier • Integrator • Differentiator • Comparator • Schmitt Trigger TRANSISTOR, MOTOR & AMPLIFIER TOOLS • Transistor Amplifier Calculator • Transistor Design Tools • Motor Calculations • Stepper Motor Tools • Servo Motor Tools • Power Dissipation FILTER DESIGN • Sallen-Key Active Filters • Butterworth Filters • Chebyshev Filters • Bessel Filters • Band-Pass Filters • Band-Reject Filters • Crossover Filters Graphical visualization is available for supported filter calculations. RESISTOR, CAPACITOR & INDUCTOR TOOLS • Resistor Colour Code • SMD Resistor Code • Resistors in Series and Parallel • Resistor Ratio • LED Series Resistor • Star-Delta / Delta-Star Converter • Pi, Tee and Bridged-Tee Attenuators • Capacitors in Series and Parallel • Capacitor Charge • Capacitor Code • Capacitive Reactance • Inductive Reactance • Inductor Design OTHER ELECTRONICS TOOLS • 555 Timer — Astable and Monostable • Adjustable Voltage Regulator • PCB Trace Width Calculator • Microstrip Trace Width and Impedance • Skin Depth • Coaxial Cable Impedance • Power Calculator • Decibel Converter • Decibel to Watt and Watt to Decibel Electronic Circuit Calculator is useful for circuit analysis, circuit theory, electronic design, electrical calculations, digital electronics, power electronics, filter design, transistor calculations, op amp calculations, and electronics engineering study. Whether you are solving Thevenin, Norton, KCL, KVL, nodal or mesh problems, designing filters and amplifiers, or experimenting with digital ICs and converter simulations, the app brings your essential electronics tools together in one place. Calculate circuits. Analyze networks. Simulate electronics. Learn by interacting.

About

SJ Resistor Calculator

This tool simplifies resistor calculations for electronics enthusiasts, students, and professionals. It accurately decodes resistor color codes and performs series/parallel calculations for complex circuit analysis. Avoid manual errors and streamline your electronics projects.

Highlights
  • Resistor color code decoding (4, 5, 6 band)
  • Series resistor calculations
  • Parallel resistor calculations
  • Accurate resistance and tolerance values
  • User-friendly interface
Features
Read full description

############################# # SJ RESISTOR CALCULATOR # ############################# Never misread your electronic components again! SJ Resistor Calculator is the essential tool for professionals, students, and electronics enthusiasts. No more color code errors or tedious calculations for your circuits! +----------------------------------------+ | WHY CHOOSE THIS APP | +----------------------------------------+ [ INTUITIVE DECODING ] - Instantly read 4, 5, or 6-band resistors. - Get the exact value and tolerance effortlessly. [ SERIES CALCULATIONS ] - Calculate the equivalent resistance of your series circuits. - Add as many components as you need. [ PARALLEL CALCULATIONS ] - Easily analyze the behavior of your parallel circuits. - Absolute precision for your electrical designs. [ PROFESSIONAL RELIABILITY ] - A clean, ergonomic, and straightforward interface. - Designed for maintenance, studies, and troubleshooting. Free and available in your language, download it today!

Screenshots

Electronic Circuit Calculator4 screens
SJ Resistor Calculator4 screens

Verdict

The call

The clearest difference is rating: SJ Resistor Calculator at 5.0 against Electronic Circuit Calculator's 4.0. SJ Resistor Calculator also leads on update cadence (every 2 weeks vs every 2 months). Electronic Circuit Calculator's advantage is monetization model (free vs free with in-app purchases) and ratings volume (5 vs 1). On price, ads, in-app purchases and device support 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. Electronic Circuit Calculator sells 1 one-off in-app purchase and SJ Resistor Calculator sells 5 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

SJ Resistor Calculator holds the better App Store score, 5.0 against 4.0. That said, the two scores are not equally well evidenced: Electronic Circuit Calculator has 5 ratings behind it against 1, so its average is the more settled of the two.

UpkeepUpdate frequency

Electronic Circuit Calculator ships an update every 2 months, SJ Resistor Calculator every 2 weeks. The most recent releases landed on November 6, 2026 and November 4, 2026 respectively.

Scorecard4 real differences · 6 level
Electronic Circuit Calculator versus SJ Resistor Calculator: the parameters behind the verdict, then further details
ParameterElectronic Circuit CalculatorSJ Resistor Calculator
PriceFreeFree
Rating4.0 (5 ratings)5.0 (1 ratings) — better
Positive reviews11.1% of reviews—
Number of ratings5 — better1
Update frequencyEvery 2 monthsEvery 2 weeks — better
AdsYesYes
In-app purchasesYesYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.0 — better16.0
Further details — not scored
Size37 MB4 MB
Age rating4+4+
DeveloperAnas AbubakarStephane JAILLIARD

Customer experience

Electronic Circuit Calculator

All ratings5 ratings
Positive80.0%
Neutral0.0%
Negative20.0%
Written reviews9 reviews
Positive11.1%
Neutral11.1%
Negative77.8%

SJ Resistor Calculator

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

In-app purchases

1 purchases

Electronic Circuit Calculator

One-time1
  • Upgrade to the Pro version$3.99
5 purchases

SJ Resistor Calculator

One-time5
  • A coffee$0.99
  • A cookie$2.99
  • No ads$4.99
Show 2 more
  • A lemon tart$4.99
  • A pizza$9.99

Questions

Is Electronic Circuit Calculator free?
Electronic Circuit Calculator is free to download, with in-app purchases available.
Is SJ Resistor Calculator free?
SJ Resistor Calculator is free to download, with in-app purchases available.
Which has better reviews, Electronic Circuit Calculator or SJ Resistor Calculator?
SJ Resistor Calculator is rated higher. Electronic Circuit Calculator averages 4.0 out of 5 from 5 ratings, while SJ Resistor Calculator averages 5.0 from 1 ratings.
Do Electronic Circuit Calculator or SJ Resistor Calculator have ads?
Both Electronic Circuit Calculator and SJ Resistor Calculator show ads.
Which is updated more often, Electronic Circuit Calculator or SJ Resistor Calculator?
Electronic Circuit Calculator ships an update every 2 months, and SJ Resistor Calculator every 2 weeks. Most recently, Electronic Circuit Calculator was updated on November 6, 2026 and SJ Resistor Calculator on November 4, 2026.

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