# SJ Resistor Calculator vs Voltage Divider Calculator

The clearest difference is rating: SJ Resistor Calculator at 5.0 against Voltage Divider Calculator's 3.3. SJ Resistor Calculator also leads on update cadence (every 2 weeks vs every 11 months). Voltage Divider Calculator's advantage is in-app purchases (none vs 5) and ads (none vs shown). On price, device support and iOS requirement there is nothing between them.

Both are free to download. SJ Resistor Calculator sells 5 one-off in-app purchases. Voltage Divider Calculator asks for nothing beyond the download.

SJ Resistor Calculator holds the better App Store score, 5.0 against 3.3. Both are backed by a comparable volume of ratings — 1 and 3 respectively.

SJ Resistor Calculator ships an update every 2 weeks, Voltage Divider Calculator every 11 months. Both last shipped on November 4, 2026.

## The numbers

| Metric | SJ Resistor Calculator | Voltage Divider Calculator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/sj-resistor-calculator/id6504838457/reviews)** | [3.3 (3 ratings)](https://appshunter.io/ios/app/voltage-divider-calculator/id6505137107/reviews) |
| Number of ratings | 1 | **3** |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Every 2 weeks** | Every 11 months |
| Monetization | Free with in-app purchases | **Free** |
| Size | 4 MB | 9 MB |
| Requires iOS | **16.0** | 17.6 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Stephane JAILLIARD](https://appshunter.io/developer/1749751077) | [V PUGAZHENTHI](https://appshunter.io/developer/491898049) |

## 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 |


### Voltage Divider Calculator

[App page](https://appshunter.io/ios/app/voltage-divider-calculator/id6505137107)

Calculate unknown values in voltage divider circuits with ease. Supports loaded dividers, power dissipation calculations, and finding standard resistor values. Ideal for students, hobbyists, and engineers.

**Highlights:** Calculate Vin, Vout, R1, R2, Support for loaded dividers (RL), Power dissipation calculation (P(R1), P(R2)), Find nearest standard E24 resistor values, Supports Ohms and Kilo-Ohms, Instant results as you type

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

**In-app purchases:** none


## Frequently asked questions

### Is SJ Resistor Calculator free?

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

### Is Voltage Divider Calculator free?

Voltage Divider Calculator is free to download, with no in-app purchases.

### Which has better reviews, SJ Resistor Calculator or Voltage Divider Calculator?

SJ Resistor Calculator is rated higher. SJ Resistor Calculator averages 5.0 out of 5 from 1 ratings, while Voltage Divider Calculator averages 3.3 from 3 ratings.

### Do SJ Resistor Calculator or Voltage Divider Calculator have ads?

SJ Resistor Calculator shows ads; Voltage Divider Calculator does not.

### Which is updated more often, SJ Resistor Calculator or Voltage Divider Calculator?

SJ Resistor Calculator ships an update every 2 weeks, and Voltage Divider Calculator every 11 months. Most recently, SJ Resistor Calculator was updated on November 4, 2026 and Voltage Divider Calculator on November 4, 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.*