# Resistor Tools Pro vs Electronic Circuits Calc Pro

The clearest difference is price: Resistor Tools Pro at $0.99 against Electronic Circuits Calc Pro's $4.99. Resistor Tools Pro also leads on iOS requirement (12.0 vs 16.0). Electronic Circuits Calc Pro's advantage is chart position (#193 vs unranked). On update cadence, ads, in-app purchases and device support there is nothing between them.

Resistor Tools Pro costs $0.99 and Electronic Circuits Calc Pro $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Resistor Tools Pro ships an update every 2 months, Electronic Circuits Calc Pro every 6 weeks. The most recent releases landed on June 25, 2026 and September 16, 2026 respectively.

## The numbers

| Metric | Resistor Tools Pro | Electronic Circuits Calc Pro |
| --- | --- | --- |
| Price | **$0.99** | $4.99 |
| Rating | **[4.0 (1 ratings)](https://appshunter.io/ios/app/resistor-tools-pro/id825620924/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 6 weeks** |
| Monetization | Paid | — |
| Best chart rank | — | **#193** |
| Size | 4 MB | 19 MB |
| Requires iOS | **12.0** | 16.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac |
| Age rating | 4+ | 4+ |
| Developer | [Siu Yuen Ho](https://appshunter.io/developer/814088527) | [ALG Software Lab](https://appshunter.io/developer/1650561236) |

## What reviewers say

### Resistor Tools Pro

[App page](https://appshunter.io/ios/app/resistor-tools-pro/id825620924)

This utility app offers a suite of tools for calculating and finding resistor combinations. It's designed for electronics enthusiasts and professionals needing to determine series, parallel, and voltage divider configurations. Save and share your calculations easily.

**Highlights:** Calculate series/parallel resistance, Find resistor combinations for desired resistance, Voltage divider ratio and value calculation, Inverting amplifier gain calculation, Save combinations to CSV, Share via AirDrop, Upload CSV to iCloud Drive

**In-app purchases:** none


### Electronic Circuits Calc Pro

[App page](https://appshunter.io/ios/app/electronic-circuits-calc-pro/id1658493129)

**Currently charting:** #193 Top Paid · Utilities (US App Store)

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Resistor Tools Pro free?

Resistor Tools Pro costs $0.99, with no in-app purchases.

### Is Electronic Circuits Calc Pro free?

Electronic Circuits Calc Pro costs $4.99, with no in-app purchases.

### Do Resistor Tools Pro or Electronic Circuits Calc Pro have ads?

Neither Resistor Tools Pro nor Electronic Circuits Calc Pro shows ads.

### Which is updated more often, Resistor Tools Pro or Electronic Circuits Calc Pro?

Resistor Tools Pro ships an update every 2 months, and Electronic Circuits Calc Pro every 6 weeks. Most recently, Resistor Tools Pro was updated on June 25, 2026 and Electronic Circuits Calc Pro on September 16, 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.*