# Resistor Tools Pro vs Capacitor Calculator

The clearest difference is update cadence: Resistor Tools Pro at every 2 months against Capacitor Calculator's every 29 months. Resistor Tools Pro also leads on rating (4.0 vs 3.8) and price ($0.99 vs $2.99). Capacitor Calculator's advantage is ratings volume (4 vs 1). On ads, in-app purchases, monetization model and device support there is nothing between them.

Resistor Tools Pro costs $0.99 and Capacitor Calculator $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Resistor Tools Pro holds the better App Store score, 4.0 against 3.8. Both are backed by a comparable volume of ratings — 1 and 4 respectively.

Resistor Tools Pro ships an update every 2 months, Capacitor Calculator every 29 months. The most recent releases landed on June 25, 2026 and September 14, 2026 respectively.

## The numbers

| Metric | Resistor Tools Pro | Capacitor Calculator |
| --- | --- | --- |
| Price | **$0.99** | $2.99 |
| Rating | **[4.0 (1 ratings)](https://appshunter.io/ios/app/resistor-tools-pro/id825620924/reviews)** | [3.8 (4 ratings)](https://appshunter.io/ios/app/capacitor-calculator/id1366563133/reviews) |
| Number of ratings | 1 | **4** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 29 months |
| Monetization | Paid | Paid |
| Size | 4 MB | 1 MB |
| Requires iOS | **12.0** | 17.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Siu Yuen Ho](https://appshunter.io/developer/814088527) | [Nitrio](https://appshunter.io/developer/321121189) |

## 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


### Capacitor Calculator

[App page](https://appshunter.io/ios/app/capacitor-calculator/id1366563133)

This utility app calculates the time constant and energy stored in a capacitor. It helps understand the time-delay characteristics of electrical circuits when a voltage is applied.

**Highlights:** Calculate time constant (RC), Calculate energy stored (E), Input voltage, capacitance, and resistance, Understand capacitor charging/discharging, Analyze circuit time-delay

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Resistor Tools Pro free?

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

### Is Capacitor Calculator free?

Capacitor Calculator costs $2.99, with no in-app purchases.

### Which has better reviews, Resistor Tools Pro or Capacitor Calculator?

Resistor Tools Pro is rated higher. Resistor Tools Pro averages 4.0 out of 5 from 1 ratings, while Capacitor Calculator averages 3.8 from 4 ratings.

### Do Resistor Tools Pro or Capacitor Calculator have ads?

Neither Resistor Tools Pro nor Capacitor Calculator shows ads.

### Which is updated more often, Resistor Tools Pro or Capacitor Calculator?

Resistor Tools Pro ships an update every 2 months, and Capacitor Calculator every 29 months. Most recently, Resistor Tools Pro was updated on June 25, 2026 and Capacitor Calculator on September 14, 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.*