Comparison

Electronics Kit 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

Electronics Kit

This app offers a comprehensive suite of electronics tools and calculators for hobbyists and professionals. It includes features for component value calculation, pinout diagrams, and various electronic resources. Users can access a free version with ads or a PRO version for enhanced functionality and an ad-free experience.

Highlights
  • Component value calculators
  • Extensive pinout diagrams
  • Electronic resource library
  • SMD resistor code lookup
  • Ohm's law calculator
  • RC charging/discharging calculator
  • Frequency converter
Features
Read full description

This app is a powerful collection of electronics tools. It is suitable for hobbyist, electronic engineers or professionals The FREE version may contain ads. You can also buy the PRO version to support the developer, unlock more features and get rid of the ads. Component value function is a tool for find combination of components to making desired corner frequency, equivalent resistance, equivalent capacitance, equivalent inductance, etc. It is useful for designers have different choices of limited components Features ● Calculators : Component value range, SMD resistor code, Resistor in series and parallel, Capacitor in series and parallel, Inductor in series and parallel, Impedance calculator, Ratio calculator, Voltage divider, Ohm's law, RC charging / discharging, LED resistor calculator, RC, RL, LC filter, Wheatstone bridge, Operational amplifier, Adjustable voltage regulator, 555 timer calculator, Power dissipation calculator, Coil inductance, Battery life calculator, Trace width calculator, Frequency converter, RMS converter, Decibel converter, Range converter, Temperature calculator, matrix, complex matrix, simultaneous equations, Routh-Hurwitz, link budget, dipole antenna ● Pinout : audio DIN , DVI, Ethernet, Firewire, Game port, HDMI , Lightning port, Mini-Display port, PS/2 connector, Parallel port, Phone jack connector, RCA connector, Registered jack, S-video, SDCard , Serial port, SIM card, USB, VGA , XLR connector ● Resource : Circuit symbol, SMD resistor package, SMD capacitor package, TTL 7400 series, CMOS 4000 series, SMD marking, ASCII table, logic gate , Resistivity table, Batteries, Ampacity, AWG wire, SWG wire, World plug ● Share CSV via AirDrop ● Share CSV to iCloud Drive

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

Electronics Kit4 screens
SJ Resistor Calculator4 screens

Verdict

The call

The clearest difference is ads: Electronics Kit at none against SJ Resistor Calculator's shown. Electronics Kit also leads on ratings volume (65 vs 1) and iOS requirement (9.0 vs 16.0). SJ Resistor Calculator's advantage is update cadence (every 2 weeks vs every 6 weeks) and rating (5.0 vs 4.8). On price, in-app purchases, monetization model 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. Electronics Kit sells 5 one-off in-app purchases 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 4.8. That said, the two scores are not equally well evidenced: Electronics Kit has 65 ratings behind it against 1, so its average is the more settled of the two.

UpkeepUpdate frequency

Electronics Kit ships an update every 6 weeks, SJ Resistor Calculator every 2 weeks. The most recent releases landed on October 10, 2026 and September 23, 2026 respectively.

Scorecard5 real differences · 5 level
Electronics Kit versus SJ Resistor Calculator: the parameters behind the verdict, then further details
ParameterElectronics KitSJ Resistor Calculator
PriceFreeFree
Rating4.8 (65 ratings)5.0 (1 ratings) — better
Positive reviews91.4% of reviews—
Number of ratings65 — better1
Update frequencyEvery 6 weeksEvery 2 weeks — better
AdsNo — betterYes
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS9.0 — better16.0
Further details — not scored
Size53 MB4 MB
Age rating4+4+
DeveloperSiu Yuen HoStephane JAILLIARD

Customer experience

Electronics Kit

All ratings65 ratings
Positive95.4%
Neutral3.1%
Negative1.5%
Written reviews35 reviews
Positive91.4%
Neutral2.9%
Negative5.7%

SJ Resistor Calculator

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

In-app purchases

5 purchases

Electronics Kit

One-time5
  • Unlock no. of components limit$0.99
  • Unlock Pro feature$1.99
  • 'Show steps' in nodal analysis$2.99
Show 2 more
  • Unlock controlled sources$2.99
  • 'Show steps' in equivalent cir$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 Electronics Kit free?
Electronics Kit 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, Electronics Kit or SJ Resistor Calculator?
SJ Resistor Calculator is rated higher. Electronics Kit averages 4.8 out of 5 from 65 ratings, while SJ Resistor Calculator averages 5.0 from 1 ratings.
Do Electronics Kit or SJ Resistor Calculator have ads?
SJ Resistor Calculator shows ads; Electronics Kit does not.
Which is updated more often, Electronics Kit or SJ Resistor Calculator?
Electronics Kit ships an update every 6 weeks, and SJ Resistor Calculator every 2 weeks. Most recently, Electronics Kit was updated on October 10, 2026 and SJ Resistor Calculator on September 23, 2026.

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