# Resistor Tools vs Series Parallel Calculator

The clearest difference is rating: Resistor Tools at 5.0 against Series Parallel Calculator's 4.5. Resistor Tools also leads on ads (none vs shown) and ratings volume (10 vs 2). Series Parallel Calculator's advantage is in-app purchases (none vs 1). On price, device support and iOS requirement there is nothing between them.

Both are free to download. Resistor Tools sells 1 one-off in-app purchase. Series Parallel Calculator asks for nothing beyond the download.

Resistor Tools holds the better App Store score, 5.0 against 4.5. That said, the two scores are not equally well evidenced: Resistor Tools has 10 ratings behind it against 2, so its average is the more settled of the two.

## The numbers

| Metric | Resistor Tools | Series Parallel Calculator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (10 ratings)](https://appshunter.io/ios/app/resistor-tools/id826045228/reviews)** | [4.5 (2 ratings)](https://appshunter.io/ios/app/series-parallel-calculator/id6737332345/reviews) |
| Number of ratings | **10** | 2 |
| Positive reviews | 75.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | Every 2 months | — |
| Monetization | Free with in-app purchases | **Ad-supported** |
| Size | 4 MB | 30 MB |
| Requires iOS | 12.0 | 12.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Siu Yuen Ho](https://appshunter.io/developer/814088527) | [Muhammad Awais Younas](https://appshunter.io/developer/1771187232) |

## What reviewers say

### Resistor Tools

[App page](https://appshunter.io/ios/app/resistor-tools/id826045228)

This utility app provides a suite of tools for calculating and determining resistor values. It assists hobbyists and engineers with series, parallel, and voltage divider calculations, as well as inverting amplifier gain.

**Highlights:** Series and parallel resistor calculation, Resistor combination finder, Voltage divider ratio and value calculation, Inverting amplifier gain calculation, Save combinations to CSV

**Features:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock pro feature | $0.99 | one-time |


### Series Parallel Calculator

[App page](https://appshunter.io/ios/app/series-parallel-calculator/id6737332345)

Calculate resistors, capacitors, and inductors in series and parallel circuits. This tool simplifies complex electrical circuit analysis for professionals and students, providing instant, accurate results for various configurations.

**Highlights:** Series and parallel calculations, Resistor, capacitor, and inductor calculation, Mixed circuit solver, User-friendly interface, Instant results, Circuit analysis

**In-app purchases:** none


## Frequently asked questions

### Is Resistor Tools free?

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

### Is Series Parallel Calculator free?

Series Parallel Calculator is free to download, with no in-app purchases.

### Which has better reviews, Resistor Tools or Series Parallel Calculator?

Resistor Tools is rated higher. Resistor Tools averages 5.0 out of 5 from 10 ratings, while Series Parallel Calculator averages 4.5 from 2 ratings.

### Do Resistor Tools or Series Parallel Calculator have ads?

Series Parallel Calculator shows ads; Resistor Tools does not.

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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.*