# Resistor Calculator Lite vs Resistor Tools

The clearest difference is in-app purchases: Resistor Calculator Lite at none against Resistor Tools's 1. On price, update cadence, ads and device support there is nothing between them.

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

Resistor Calculator Lite ships an update every 6 weeks, Resistor Tools every 2 months. The most recent releases landed on October 7, 2026 and October 21, 2026 respectively.

## The numbers

| Metric | Resistor Calculator Lite | Resistor Tools |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (10 ratings)](https://appshunter.io/ios/app/resistor-tools/id826045228/reviews)** |
| Number of ratings | — | **10** |
| Positive reviews | — | 75.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 6 weeks** | Every 2 months |
| Monetization | — | Free with in-app purchases |
| Size | 8 MB | 4 MB |
| Requires iOS | **11.0** | 12.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Marck Apps](https://appshunter.io/developer/561157787) | [Siu Yuen Ho](https://appshunter.io/developer/814088527) |

## What reviewers say

### Resistor Calculator Lite

[App page](https://appshunter.io/ios/app/resistor-calculator-lite/id567034416)

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

**In-app purchases:** none


### 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 |


## Frequently asked questions

### Is Resistor Calculator Lite free?

Resistor Calculator Lite is free to download, with no in-app purchases.

### Is Resistor Tools free?

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

### Do Resistor Calculator Lite or Resistor Tools have ads?

Neither Resistor Calculator Lite nor Resistor Tools shows ads.

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

Resistor Calculator Lite ships an update every 6 weeks, and Resistor Tools every 2 months. Most recently, Resistor Calculator Lite was updated on October 7, 2026 and Resistor Tools on October 21, 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.*