# Electronic Circuit Calculator vs SJ Resistor Calculator

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.

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.

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.

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.

## The numbers

| Metric | Electronic Circuit Calculator | SJ Resistor Calculator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.0 (5 ratings)](https://appshunter.io/ios/app/electronic-circuit-calculator/id1583972990/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/sj-resistor-calculator/id6504838457/reviews)** |
| Number of ratings | **5** | 1 |
| Positive reviews | 11.1% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 2 months | **Every 2 weeks** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 37 MB | 4 MB |
| Requires iOS | **15.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Anas Abubakar](https://appshunter.io/developer/1581534101) | [Stephane JAILLIARD](https://appshunter.io/developer/1749751077) |

## What reviewers say

### Electronic Circuit Calculator

[App page](https://appshunter.io/ios/app/electronic-circuit-calculator/id1583972990)

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:** macOS Compatibility, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Upgrade to the Pro version | $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 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.

---

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