# Electronics Kit vs SJ Resistor Calculator

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.

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.

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.

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.

## The numbers

| Metric | Electronics Kit | SJ Resistor Calculator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.8 (65 ratings)](https://appshunter.io/ios/app/electronics-kit/id1190014476/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/sj-resistor-calculator/id6504838457/reviews)** |
| Number of ratings | **65** | 1 |
| Positive reviews | 91.4% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 6 weeks | **Every 2 weeks** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 53 MB | 4 MB |
| Requires iOS | **9.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Siu Yuen Ho](https://appshunter.io/developer/814088527) | [Stephane JAILLIARD](https://appshunter.io/developer/1749751077) |

## What reviewers say

### Electronics Kit

[App page](https://appshunter.io/ios/app/electronics-kit/id1190014476)

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:** Vision Pro support

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock no. of components limit | $0.99 | one-time |
| Unlock Pro feature | $1.99 | one-time |
| 'Show steps' in nodal analysis | $2.99 | one-time |
| Unlock controlled sources | $2.99 | one-time |
| 'Show steps' in equivalent cir | $3.99 | one-time |


### SJ Resistor Calculator

[App page](https://appshunter.io/ios/app/sj-resistor-calculator/id6504838457)

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:** macOS Compatibility, Vision Pro support

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| A coffee | $0.99 | one-time |
| A cookie | $2.99 | one-time |
| No ads | $4.99 | one-time |
| A lemon tart | $4.99 | one-time |
| A pizza | $9.99 | one-time |


## Frequently asked 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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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*