# SJ Resistor Calculator vs Resistor Color Code Calc.

The clearest difference is ads: Resistor Color Code Calc. at none against SJ Resistor Calculator's shown. SJ Resistor Calculator's advantage is update cadence (every 2 weeks vs every 5 months). On price, rating, ratings volume and in-app purchases there is nothing between them.

Both are free to download. SJ Resistor Calculator sells 5 one-off in-app purchases and Resistor Color Code Calc. sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 5.0 for SJ Resistor Calculator against 5.0 for Resistor Color Code Calc.. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

SJ Resistor Calculator ships an update every 2 weeks, Resistor Color Code Calc. every 5 months. The most recent releases landed on September 23, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | SJ Resistor Calculator | Resistor Color Code Calc. |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/sj-resistor-calculator/id6504838457/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/resistor-color-code-calc/id6755287812/reviews) |
| Number of ratings | 1 | 1 |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | **Every 2 weeks** | Every 5 months |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 4 MB | 35 MB |
| Requires iOS | 16.0 | **15.6** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | +4 |
| Developer | [Stephane JAILLIARD](https://appshunter.io/developer/1749751077) | [Sachinbhai Surani](https://appshunter.io/developer/1838685550) |

## What reviewers say

### 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 |


### Resistor Color Code Calc.

[App page](https://appshunter.io/ios/app/resistor-color-code-calc/id6755287812)

Instantly decode resistor color bands, calculate exact values, and convert SMD resistor markings. This app provides essential tools for electronics students, technicians, and hobbyists with a clean interface and fast processing.

**Highlights:** Decode 3- to 6-band resistors, Calculate resistance values, Convert SMD resistor codes, Series and parallel resistor calculators, Save and share results, Clean and simple interface

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Lifetime premium | $12.99 | one-time |


## Frequently asked questions

### Is SJ Resistor Calculator free?

SJ Resistor Calculator is free to download, with in-app purchases available.

### Is Resistor Color Code Calc. free?

Resistor Color Code Calc. is free to download, with in-app purchases available.

### Which has better reviews, SJ Resistor Calculator or Resistor Color Code Calc.?

SJ Resistor Calculator and Resistor Color Code Calc. are both rated 5.0 out of 5 on the App Store, from 1 and 1 ratings respectively.

### Do SJ Resistor Calculator or Resistor Color Code Calc. have ads?

SJ Resistor Calculator shows ads; Resistor Color Code Calc. does not.

### Which is updated more often, SJ Resistor Calculator or Resistor Color Code Calc.?

SJ Resistor Calculator ships an update every 2 weeks, and Resistor Color Code Calc. every 5 months. Most recently, SJ Resistor Calculator was updated on September 23, 2026 and Resistor Color Code Calc. on October 12, 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.*