# Resistor Tools vs Voltage Divider Calculator

The clearest difference is rating: Resistor Tools at 5.0 against Voltage Divider Calculator's 3.3. Resistor Tools also leads on update cadence (every 2 months vs every 11 months) and ratings volume (10 vs 3). Voltage Divider Calculator's advantage is in-app purchases (none vs 1). On price, ads and device support there is nothing between them.

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

Resistor Tools holds the better App Store score, 5.0 against 3.3. Both are backed by a comparable volume of ratings — 10 and 3 respectively.

Resistor Tools ships an update every 2 months, Voltage Divider Calculator every 11 months. The most recent releases landed on September 24, 2026 and September 26, 2026 respectively.

## The numbers

| Metric | Resistor Tools | Voltage Divider Calculator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (10 ratings)](https://appshunter.io/ios/app/resistor-tools/id826045228/reviews)** | [3.3 (3 ratings)](https://appshunter.io/ios/app/voltage-divider-calculator/id6505137107/reviews) |
| Number of ratings | **10** | 3 |
| Positive reviews | 75.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 11 months |
| Monetization | Free with in-app purchases | **Free** |
| Size | 4 MB | 9 MB |
| Requires iOS | **12.0** | 17.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Siu Yuen Ho](https://appshunter.io/developer/814088527) | [V PUGAZHENTHI](https://appshunter.io/developer/491898049) |

## 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 |


### 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 Resistor Tools free?

Resistor Tools 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, Resistor Tools or Voltage Divider Calculator?

Resistor Tools is rated higher. Resistor Tools averages 5.0 out of 5 from 10 ratings, while Voltage Divider Calculator averages 3.3 from 3 ratings.

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

Neither Resistor Tools nor Voltage Divider Calculator shows ads.

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

Resistor Tools ships an update every 2 months, and Voltage Divider Calculator every 11 months. Most recently, Resistor Tools was updated on September 24, 2026 and Voltage Divider Calculator on September 26, 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.*